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940486fb335e2ea6a9c94c6e8a44eea3 | in chloroplasts, the chlorophyll is located in a stroma b grana c pyrenoid d both a and b | askiitians.com | 2021.25 | [
{
"text": "answer the chloroplast is a plastid which contains chlorophyll (green pigment) within the thylakoid membranes of the organelle. thylakoid can be defined as a membrane-bound compartment within the chloroplasts of a plant cell. it is the site of the light-dependent reactions of photosynthesis. thylakoid consists of a thylakoid membrane which encloses the thylakoid lumen. a stack of thylakoid discs or lamella is known as grana. so, the correct answer is 'grana'.",
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0120af762d918eb9ae627f6e6071e7da | are ur notes sufficient for chapters like metallurgy.. chemistry in everyday life polymer etc for neet ... please do response as early as possible and as honest as possible..plz | askiitians.com | 2021.31 | [
{
"text": "dear devansh notes consists of only important points. you can take help from any other books if you want because you never know what will be asked.",
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21500dae737d6dfaec1e4df33f4d135f | when the velocity is constant, can the average velocity over any time interval differ from the instantaneous velocity at any instant? if so, give an example; if not, explain why. | askiitians.com | 2021.21 | [
{
"text": "for constant velocity, the average velocity of a particle between any time interval will be the same as the instantaneous velocity at any instant. it is important to note that the velocity will be constant, if the particle moves in straight line and takes no curves. therefore the position versus time graph for the particle will be a straight line. hence, the slope of the position time graph, representing the instantaneous velocity of the particle will always be constant. consider for example, the motion of the car along a straight road, such that the car moves with constant velocity i.e. the car travel equal displacement in some fixed time interval. as the car takes no turn, its velocity vector always point in the same direction and the length of the vector also remains the same. the instantaneous velocity of the car at any instant is the slope of the position time curve at a particular point. as stated above, the position time curve for the car is a straight line. therefore its slope at any point will be same and equal to the average velocity.",
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bcdd8addd502d735dfb5692fe309c341 | how will you convert: (i) methyl amine into ethylamine (ii) aniline into ? -bromo aniline (iii) aniline into 1, 3, 5-tribromobenzene. | askiitians.com | 2021.43 | [
{
"text": "ethylamine reacts with nano2 and hcl to get ethanol it oxidised to ethanoic acid and converted to an amide.then by hoffmann method methlamine is prepared.",
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cc84cb35bda4e4573b2cfca84b0e6106 | 2 particles carrying charges -q and +q have equal mass m each,is fixed at the ends of a light rod of length a to form a dipole.rod is clamped at an end and is placed in a uniform electric field e with axis of the dipole along the electric field.rod is slightly tilted and then released.neglecting gravity,find time period of oscillations. | askiitians.com | 2021.43 | [
{
"text": "hi swapan!!!!! you have posted a very good question. lets see....... we know that torque=p*e (i have used * for cross product) i.e. torque=(p)(e)(sin x) (where x is the angle between p and e) this concept is also given in ncert. now torque=i(alpha)=(2m)/((12)(l^2))*alpha (here * is only for simple product) now use alpha=wdw/dx and integrate. (w refers to omega angular velocity) after that take w=dx/dt and solve you will get the answer.",
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c94f6aac2e66df68d81edcb24f6dc1ab | how much score & what rank is required 2 get mech. in iit d?? | askiitians.com | 2021.25 | [
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"text": "dear student, to get into mechanical in iit delhi you need to get a rank below 500 all the best !!!",
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27fce9d0b77be904b4ee93ef3a14e3c4 | i got 105 in jee mains 2018. my general rank is 51302. will i get chance in iiest, shibpur or nit, durgapur ? | askiitians.com | 2021.25 | [
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"text": "if you are a general category students you wont be able to get them but if you are not you will get",
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"text": "if you don't get admission in desired college, do not get disoriented. rather try and search about the reputation and the placements offered by some private universities. you can select b tech. b tech is one of the most popular courses, always in demand in india. students prefer this course with an idea of securing a well paid job after the completion of their professional degree course. so you can select any branch of engineering depending upon your interest among cse, mechanical, electronics, civil, aerospace, biotechnology, food technology, biomedical engineering, information technology, chemical engineering, automobile engineering, electronics and computer engineering or any other. so it is advisable if you earn your degree from a well known university that provides prime placement opportunity, outstanding industrial exposure and professional enhancement training. i can enlist some universities for your help - lovely professional university, manav rachna university, sharda university etc. which offer excellent learning atmosphere to their students. i hope it helps.",
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1659ab6b23879910d7f2c53663c06d78 | <p>i got all india rank as 3958 in aieee b.arch and state rank as 291........ will i get seat in nit trichy?????????</p> | askiitians.com | 2021.43 | [
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"text": "dear student i hope the query would have been resolved by now.all the best.",
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00abc51c151f9eb4a0f1c5da8e2c5c11 | a phenol with cl at para position is more acidic than f,br.i at para position why? | askiitians.com | 2021.43 | [
{
"text": "the donating nature order is, f>cl>br>i but f being the most electonegative element(sounded funny jus dont think that being most electro negative doesnt mean that it wont donate electron it donates via mesomeric) it makes h-bonding with the rest of the phenol molecules(you cant take a single phenol molecule, can you? ☺) and so it cant dontate efficiently and as the next place in the order goes to chlorine it is most acidic.(cl is not effective in makng h bond).. got clarity?",
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db68e6676f5f365fb1fd7ada00a57dc1 | sir what are the important topics for iseet . please tell me | askiitians.com | 2021.39 | [
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"text": "dear arjun, you will have to take care of three things 12 board exams iseet main exam - comprehension, critical thinking and logical reasoning iseet advanced - problem solving with science and maths coming to your question, it is not yet completely known what kind of questions will be asked in iseet main exam. but let me explain in general what comprehension, critical thinking and logical reasoning mean. comprehension in comprehension, a passage of text is given followed by some questions related to the passage. these questions test your understanding of the passage. this understanding comes from the interaction between the words and how you can ingest these words. critical thinking critical thinking is the process of thinking whether a claim is true, false; sometimes true, or partly true. this is achieved by understanding the logical connections between given things identifying and evaluating arguments detecting inconsistencies and common mistakes in reasoning solving problems systematically logical reasoning there are three kinds of logical reasoning - deduction induction abduction heres an example - tanmay is older than esha. sawan is older than tnmay. esha is older than sawan. if the first two statements are true, the third statement is a. true b. false c. uncertain cracking iit just got more exciting,it s not just all about getting assistance from iitians, alongside target achievement and rewards play an important role. askiitians has it all for you, wherein you get assistance only from iitians for your preparation and win by answering queries in the discussion forums. reward points 5 + 15 for all those who upload their pic and download the askiitians toolbar, just a simple to download the toolbar…. so start the brain storming…. become a leader with elite expert league askiitians thanks aman bansal askiitian expert",
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f170b551e9e6c8a59594fb578253afed | if xn + pyn + qzn is exactly divisibly by x2 (ay + bz)x + abyz, then find the value of n n p q 1 a b . | askiitians.com | 2021.21 | [
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"text": "please explain the question. its not very clear thanks, \\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_\\_",
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5c595468ffc987c60fbd8532801355d9 | what is mean by a indicator in titration? | askiitians.com | 2021.25 | [
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"text": "indicator is a substance that changes the color of a solution in order to detect the presence of certain ions in it. it can also be used to indicate the presence of completion of a reaction in order to test for a chemical reaction by color change thanks & regards ruchi shaw askiitians faculty",
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"text": "indicator is a substance that changes the color of a solution in order to detct the presence of certain ions in it. it can also be used to indicate the completion of a certain reaction in order to test for a chemical reaction by color change. thanks & regards ruchi shaw askiitians faculty",
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"text": "while\nperforming a titration, we slowly add one solution of a known concentration to\nanother known volume but without knowing concentration. this process of adding\ntitrant to another solution is performed until neutralization is achieved. so,\nin order to determine the concentration of unknown solution, an indicator is\nrequired to check if the standard solution has been added to fully react with\nunknown solution. and an indicator is a vital as it acts as a key success for a\nreaction. thanks & regards, vasantha sivaraj, askiitians faculty",
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"text": "titration is the process of determining the volumes of reagents(or solutions),required for the just completion of a reaction.the point at which the reaction is just completed is called the equivalence point,and this is judged by adding a very small amount of an auxillary reagent,called indicator.the indicator produces a clear visual change as soon as the reaction is overstepped;either a change in colour take place or a turbidity is produced in the reaction mixture.for example phenolpthalein,methyl orange etc. thanks & regard aarti gupta askiitians faculty",
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"text": "indicators are special chemicals that change color if there is a change in the ph ( caused by adding an acid or alkali ) .indicators change colors at different ph values.for example, litmus changes color at ph 7. thanks & regards ruchi shaw askiitians faculty",
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ce62e6f1d256785883c997f63c502a49 | i am interested in brilliant and narayana.i wanted 2 noe wich1 is better? | askiitians.com | 2021.21 | [
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"text": "dear shashwat, deciding any coaching institute is all your discretion, but before finalizing any coaching institue you need to know their quality and services. you need to make the detailed analyisis about all the corresponding factors that you need to generate among yourself. even askiitians also provide online classroom coaching for iit jee courses and iit jee test series with iitians. click here to get free online test series and check your status timely or you can join us as our registered user for getting best iit jee study material or iit jee test series. click here to find iit jee packages or course details with askiitians. for further details visit the folowing links: http://www.askiitians.com//iit-jee-online-coaching.aspx http://www.askiitians.com/iit-jee-test-series.aspx http://www.askiitians.com/iit-study-material/ askiitians provide you all the best possible information, feel free to ask. all the best. thanks and regards. akhilesh shukla",
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f3e739b047ce3ed4264622971bb21e4e | explain 3 centre 2 electron bonds with example | askiitians.com | 2021.25 | [
{
"text": "a three-center two-electron bond is an electron deficient chemical bond where three atoms share two electrons . the combination of three atomic orbitals form three molecular orbitals: one bonding , one non-bonding , and one anti-bonding . the two electrons go into the bonding orbital, resulting in a net bonding effect and constituting a chemical bond among all three atoms. in many common bonds of this type, the bonding orbital is shifted towards two of the three atoms instead of being spread equally among all three. the simplest example of a 3c-2e bond is in the trihydrogen cation, h3+. if right approve plzzzzzzzzzzzzzzzzzzzzzzzzzzzzz",
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9ab91925b0a310e1d0e439370729bef3 | 3/8 = 15/40 3/8 = 15/40 3/8 = 15/40 3/8 = 15/40 3/8 = 15/40 | askiitians.com | 2021.39 | [
{
"text": "dear student the given statement is true . consider the two fractions, 3/8 = 15/40 15/40 is further simplified by dividing both numerator and denominator by 5 we get, = 3/8 therefore, 3/8 = 3/8 thanks",
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383f9b52fc8dfb95cdc00ced8f286b73 | a ray op of monochromatic light is incident on the face ab of prism abcd near vertex b at an incident angle of 60° (see figure). if the refractive index of the material of the prism is 3, ?? | askiitians.com | 2021.21 | [
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"text": "dear student the figure is not attached regards",
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d6558ed9c3afd49a9688b391c83e6a79 | sir, what about those who get both aieee and iit ranks?obviously they will be leaving aieee seat so will this have any effect on a person who stands next to him,but not getting an iit seat? will his rank be increased? | askiitians.com | 2021.43 | [
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"text": "he will get his seat, but rank will remain same.",
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c95a50747463f87cc72a75ee756d945e | i have offers iit rajasthan(mechanical) and expected electronics & instrumentation or mechanical in bits pilani which option is better for me keeping in view safe future in new iit. | askiitians.com | 2021.25 | [
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"text": "it rajasthan is one among the new set of iits announced by the ministry of human resource development, govt. of india. the location of the iit in rajasthan will be announced by the govt. of india after completion of the formalities of land acquisition for setting up the new iit in rajasthan. however, in the meantime, iit kanpur has been designated as the mentor iit for looking after this iit. to start with, a 4-year b.tech. programme will be offered in three branches, viz., computer science and engineering, electrical engineering and mechanical engineering with a strength of 40 students in each branch . but.. apart from the prestigious tag of iit, its future is still in the mist. with all the other iits coming as well, to get into iit rajasthan at the cost of electronics at bits pilan is not good. having a secure future at the new iit is not a good mind set. best of luck.... my suggestion - go for electronics at bits pilani",
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6b3f40df92f925c70ccc175333782f50 | can u tell me which topics are most scoring in maths | askiitians.com | 2021.39 | [
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"text": "dear harshit for iit jeee there is no fixed weitage, it vary from year to year... f you will see the pattern of last year papers,then you will find that question were framed in such a way that it include more than one chaptre. and in whole paper almost entire syllabus are covered .so it is not advisable to leave any topic. but the important topics are. maths: calculus, vectors, complex numbers, co-ordinate geometry(2d+3d) quadratic equations. but i will suggest you to cover alll the topics and give more stress on above given topics. please feel free to post as many doubts on our discussion forum as you can. if you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. we are all iitians and here to help you in your iit jee preparation. all the best. regards, askiitians experts badiuddin",
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fca6ce531fa41975e98c7f14679e7b0a | from a group of 100 students, 50 study history, 30 study english literature and 20 study both. if a student is selected at random from the , what is the probability that the student studies. (a) at least one of these subjects. (b) history nut not english lierature. history, given that the student also studies english lierature? | askiitians.com | 2021.31 | [
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"text": "dear student, since 20 study both, no. of students study only history = 50-20 = 30 no. of students study only english = 30-20 = 10 => number of students study atleast one subject = 30+10+20 = 60 probability that student studies atleast one subject = 60/100 = 0.6 probability that student studies history but not english = 10/100 = 0.1 probability that a student studies history given that he studies english = 20/30 = 0.66 i hope it explains",
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eadda74d13eb5cf4783a3bd269bcecca | an electric kettle is marked 500w 230v and is. found to take 15 min to raise | askiitians.com | 2021.25 | [
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"text": "dear student please post the complete question , you can also attach an image . we will help good luck",
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ab290ebf2b2b951fdd653eeff0ac3659 | the genomic content of the nucleus is constant for a given species but extra chromosomal dna is found to vary in a population .explain | askiitians.com | 2021.25 | [
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"text": "dear student the dna content of the nucleus is constant for a given species. the haploid organisms have half the content of dna than that of their diploid parents. the amount of dna remains constant in all the members of a given species. on the other hand, the extrachomosomal dna which occur either in the mitochondria or in chloroplast is found to be variable among the members of a population. in case of highly active organisms, the dna (extrachromosomal) is found to be more as compared to less active ones. regards arun (askiitians forum expert)",
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dbb40eb96f9ee7f8ebb7ed969e85c621 | liebermann reaction | askiitians.com | 2021.21 | [
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"text": "dear mido saad, liebermann's nitroso reaction phenol best of luck we are all iitians and here to help you in your iit jee preparation. now you can win exciting gifts by answering the questions on discussion forum. so help discuss any query on askiitians forum and become an elite expert league askiitian. now you score 5+15 points by uploading your pic and downloading the askiitians toolbar : click here to download the toolbar.. aman bansal",
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199d7c4ca313d5e07a2b64e590d84315 | how do they solve maths 2 from hsc board when differentiation and integration steps change every moment. how to remember exercise sums and how they are solved?when i try to solve them i forget how it was done | askiitians.com | 2021.39 | [
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"text": "go through the basics first and you need to practice alot of question and revise time to time.",
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1eaa83273d982261e8d34ddbd703f15e | plz advise about best branch/iit option for rank of 2035. | askiitians.com | 2021.21 | [
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"text": "respected sir,, your iitjee rank is quite admirable.with air 2035 you are affiliated to almost every streams,,but rather if you desire c.s,,or mechanical,,,expected rank is under 1000....but you can still opt for subjects like ec, or aerospace engineering from iit bombay or dehli... best of luck.",
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279da1d888b335b9e045031ba9bbf65d | i'm in iiit allahabad with e&c and last time i got 4120 in aieee should i give aieee again this year | askiitians.com | 2021.31 | [
{
"text": "dear vipul kumar jha e&c branh and iiit allahabad both are good . if you think that u can do better and you have interest in any other branch and college then you should appear. please feel free to post as many doubts on our discussion forum as you can. if you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. we are all iitians and here to help you in your iit jee & aieee preparation. all the best. regards, askiitians experts badiuddin",
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"text": "dear vipul e&c branh and iiit allahabad both are good . if you think that u can do better and you have interest in any other branch and college then you should appear. please feel free to post as many doubts on our discussion forum as you can. if you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. we are all iitians and here to help you in your iit jee & aieee preparation. all the best. regards, askiitians experts badiuddin",
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34e791732d446d11f9d6bb53239abb67 | explain the role of forest in maintaining the balance between oxygen and carbon dioxide in the atmosphere. | askiitians.com | 2021.39 | [
{
"text": "forests are called the green lungs. this is because plants in forests release oxygen through the process of photosynthesis and help in providing oxygen to animals for respiration. plants consume carbon dioxide released by the animals. in this way, plants help in maintaining a balance of oxygen and carbon dioxide in atmosphere.",
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"text": "forests absorb atmospheric carbon and replenish the oxygen in the air we breathe.",
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"text": "forests during daytime convert co 2 to oxygen by using co 2 for photosynthesis. thus they regenerate the oxygen consumed by humans and other living beings and maintain the balance of co 2 and oxygen.",
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"text": "during photosynthesis plants release oxygen and take in carbon dioxide in the atmosphere the animal inhale oxygen and they release carbon dioxide during respiration",
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bbeff3d8cd3c7d355f321721afc74144 | five most scoring topics / chapters in each physics, chemistry and math to get good score. | askiitians.com | 2021.31 | [
{
"text": "physics:-ray potics and wave optics,heat and thermodynamic,modern physics,electrostatics chemistry:-general organic chemistry and functional group 1,atomic structure and classification,chemical and ionic equilibrium,coordination compound and organometallics,chemistry of representative element maths:-matrices and determinant,application of derivative,indefinite integral and area under curve thanks and regards sunil kr askiitian faculty",
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b87a5bc23d14b5cb5659f676c71efa3f | what are the methods used by plants to get rid of excretory products? | askiitians.com | 2021.39 | [
{
"text": "dear student wastes excreted from plants are: (i)gaseous wastes–through stomata pores co2 is given out during respiration and o2is given out during photosynthesis. (ii)liquid wastes (water)–through stomata pores by transpiration. (iii)other wastes–are stored in leaves dead cells and the leaves fall off. some other waste products are stored as resins and gums in old xylem of the plant and other wastes are also thrown out from nodes into the soil. thanks",
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0bb5248b39406b3bf47bd0bdbcfceff9 | which of the following molecule is paramagnetic ??? h 2 o ,co 2 , no, so 2 | askiitians.com | 2021.31 | [
{
"text": "paramagnetic species is one that has unpaired electron.among the h2o,co2,no and so2, the molecule which is paramagnetic is no.this is due to the fact that no molecule has 15 electrons.the presence of one unpaired electron makes this molecule an paramagnetic species.while in other molecules there is no unpaired electrons so they all behave like diamagnetic species.",
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e6701204b4fc1d654e19509184f2b11a | what is the value of the heat energy when the reaction in adiabatic process. | askiitians.com | 2021.43 | [
{
"text": "the adiabatic compression of a gas causes a rise in temperature of the gas. ... the parcel of air is unable to dissipate energy as heat , hence it is ... gas law, or the hydrostatic equation for atmospheric processes. ... of the process of interest and the rate of heat dissipation across",
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fe743f0aac97387154c7ee140ae79934 | what is van mahotsav ? when is it observed ? what is the advantage of this project ? | askiitians.com | 2021.31 | [
{
"text": "van mahotsav is a programme undertaken for planting of trees every year in the month of july. by planting more trees greenhouse effect is reduced dust particles in the air are reduced.",
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9602c50fc7e69d64305c0da5448cbf10 | draw a diagram of the human excretory system and label the various parts. | askiitians.com | 2021.39 | [
{
"text": "human excretory system",
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547c88579ae12977ab208e63e0127c3b | where is my reply? | askiitians.com | 2021.21 | [
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"text": "dear diptarshi, please post your queries again. please feel free to post as many doubts on our discussion forum as you can. if you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. askiitians expert amit yadav now you can win exciting gifts by answering the questions on discussion forum. so help discuss any query on askiitians forum and become an elite expert league askiitian.",
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260243b7f868efa0b1ea051bec036bcb | when a hexaploid female plant is crossed with a tetraploid male, the ploidy of endosperm cells in resulting seed is...... | askiitians.com | 2021.21 | [
{
"text": "lets break this question a bit. we know that during gamete formation half of the chromosomes are transmitted to the next generation. so in case of the tetraploid male plant (4n), the gamete will have half the number of chromosomes i.e. 2n similarly in case of the hexaploid female plant (6n), the gamete will have have the number of chromosomes again i.e. 3n therefore upon fusion of gametes containing 2n and 3n chromosomes, the offspring gets a ploidy level of 2n+3n=5n.",
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b145eb823ca7ffede960e65040fc4853 | what will you name this compound in iupac system ? the reason for this question is tht priority rule says that double bond is preffered over triple bond and they are also treated as functional groups. but there is also given that when number of multiple bonds is equal , then length of chain is considered | askiitians.com | 2021.43 | [
{
"text": "my answer for this question would be 3-(1-propyne)hept-1,6-diene the reason for that is, the terminal double bonds are always given priority over the terminal triple bonds. consider that. please correct me if i am wrong somewhere.",
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"text": "hello yash jain, actually that’s the confusion. according to rules i know , we select parent chain with most multiple and if it is same for 2 chains , then we choose one which is longest. moreover, i got its name “5-ethenyloct-1-en-7-yne” on acd labs software and “ 5-vinyl-1-octen-7-yne ” on chemdoodle website",
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"text": "hello yash jain, actually that’s the confusion. according to rules i know , we select parent chain with most multiple and if it is same for 2 chains , then we choose one which is longest. moreover, i got its name “5-ethenyloct-1-en-7-yne” on acd labs software and “ 5-vinyl-1-octen-7-yne ” on chemdoodle website",
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55bad2a2c824857aa1e0d0a2f45ab39e | how to solve logarithmic equations and inequations? | askiitians.com | 2021.39 | [
{
"text": "dear siddharth, try to solve some solved questions and then look at the solution , so that u can know ur mistakes. also study n learn all the pr0perties of logarithmic functions, they are very useful in tackling log problems. please feel free to ask your queries here. we are all iitians and here to help you in your iit jee preparation. all the best. win exciting gifts by answering the questions on discussion forum. so help discuss any query on askiitians forum and become an elite expert league askiitian. now you score 5+15 points by uploading your pic and downloading the askiitians toolbar respectively : click here to download the toolbar.. askiitians expert anil pannikar iit bombay",
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94533b5129080d174434febd3e3897f3 | sir, im expecting to get paperi c-9 p-18 m-0; paperi c-18 p 26 m-15; total = 86(-8)=78 could i still make for preparatory course?? | askiitians.com | 2021.31 | [
{
"text": "dear student, yes there are good chances... predicted iit jee 2010 rank predicted rank marks 1-500 more then 305 500-1000 285-305 1000-2000 254-285 2000-3000 237-254 3000-4000 223-237 4000-5000 214-223 5000-6000 206-214 6000-7000 198-206 7000-8000 192-198 8000-9000 185-192",
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02d12a6d52b7c09a276d7a4fd0a2173b | why aniline donot give friedel craft reaction? | askiitians.com | 2021.21 | [
{
"text": "http://www.askiitians.com/forums/organic-chemistry/21/4970/freidel-crafts-reactions.htm",
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{
"text": "h bonding",
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{
"text": "aniline forms a salt with aluminium chloride(the lewis acid which is used as a catalyst in friedel crafts reaction). due to this nitrogen atom of aniline acquires a positive charge and hence acts as a strong deactivating group and thus doesn ''t allow the reaction to take place. pls approve it---",
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7280501e8783eb78f61684919f086745 | do you have online coaching programmes for 5 th standard for all competitive exams like abacus vision, mom, olympiad? | askiitians.com | 2021.39 | [
{
"text": "you can call on our helpline number , or book an online trial.",
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e2b4f4620ce1852a7745793d888bc306 | i got 24961 rank in aieee i am in general category in u.p. state what nits can i get and what branch can i get engineering physics in nit calicut or dce? | askiitians.com | 2021.43 | [
{
"text": "sorry boss, engineering physics at nit calicut is closed at 11000 and dce is around 7000",
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37b395290ec43056ebd81c8fba64dad1 | cooking results in loss of certain nutrients.justify and give four such examples | askiitians.com | 2021.31 | [
{
"text": "vitamin c is an important nutrient which easily gets destroyed upon cooking. so we should take care not to cook fruits that often, and avoid overcooking vegetables like broccoli, a staggering 34% loss due to steaming and boiling. pressure cooked and microwaved eatables should be preferred as 90% of the nutrients are retained. proteins from pulses, vitamin b from potatoes and vitamin e from animal fat follow the same pattern.",
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"text": "when cooking you burn many vital food nutrients . overcooking kills those essential nutrients.also washing vegetables before cooking also leads to washage of many iberals with water.proteins from pulsesalso get easily destroyed one excess heat.food containing vitamin b from potatoes also get easily destroyed .also cooking food in microwave introduces harmful microwave waves that harm food nutrients.",
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"text": "use scholr app for solving doubts when cooking you burn many vital food nutrients . overcooking kills those essential nutrients.also washing vegetables before cooking also leads to washage of many iberals with water.proteins from pulsesalso get easily destroyed one excess heat.food containing vitamin b from potatoes also get easily destroyed .also cooking food in microwave introduces harmful microwave waves that harm food nutrients.",
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bd9e552b19486a39228f6578b0c5731a | sir i am getting electronics in bit mesra and chemical engg. in bits goa i am not so good at chemistry so my inclination is towards mesra what wud u suggest keeping in mind the branch, facilities, placements and higher studies thx in advance | askiitians.com | 2021.31 | [
{
"text": "hi since u are not interested in doing chemical engineering then u can definitely go fr bit mesra . bit mesra is a much older college as compared to bits goa, which has been opened recently only. bit mesra has gt good infra and facilities and a decent past placement record. as far as electronics is concerned then also , there should be not much problem in choosing it over chemical. it has gt a good scope and is one of the top choices among students.graduates in electronics engineering have opportunities in government and private companies for installation, operation and maintenance of electronics equipments and systems. defence, space and other large research organisations employ electronics engineers in design and development of complex devices and systems for signal processing and telecommunication. industries involved in design and fabrication of devices, integrated circuits, embedded systems, electronic equipments etc have also provide large scale placements for engineers with this specilisation. installation and maintenance of electronic equipments used for health care in hospitals, equipments & systems for instrumentation and control in process industries automation systems of assembly line in production industries, etc are also handled by electronics engineers. for detailed info on the campus placements fr bit mesra . olease follow the link www.bitmesra.ac.in/placement/placement08-09.htm .",
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"text": "hi myself apoorv jha air-17754 i have also got bit mesra biotech how is it regarding placement infrastructure n industry interface i have heard that it is ranked 14 all over india and is branch sliding allowed within d institute or not if u have any info plz make me aware of that thank u",
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b89331bc8bae88e1ec0a1452b9c70fd9 | i got a rank of 35000air(op) in aieee2009. can i get a seat in bio-tech or chemical branch in any nit's? | askiitians.com | 2021.25 | [
{
"text": "hi , please check the last year opening and closing rank in aieee colleges in link given below: www.askiitians.com/aieee-counselling/aieee-engineering-counsellings.aspx thanks and all the best !!!!",
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c6e2e323cedccd9c04ad4e1b2ce9c2cd | if a cos 2 theta + bsin 2 theta =c has a and b as its solution,then prove that tan a +tan b = 2b/a+b | askiitians.com | 2021.21 | [
{
"text": "acos 2theta+ bsin 2theta=c=> a (1-tan^2 theta /1+tan^2 theta)+ b(2tan theta/ 1+tan ^2 theta)=c=>(-a-c)tan^2theta + 2btantheta+ a-c=0=> tan a+ tan b= -2 b/(-a-c)=2b/a+csince a and bare the roots of the equation and sum of roots is the negative ratio of coefficients of x by coefficients of x^2manish kumar panda",
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] |
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cd615e99d085d51c83711a8080773d08 | amines behave as what? | askiitians.com | 2021.43 | [
{
"text": "amines behaves as lewis bases. thanks also check http://www.askiitians.com/online-study-packages/complete-jee-main-advanced-course-and-test-series thanks",
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562e3c692b1e3e5a554a4373799d3974 | a gun mounted on the top of a moving truck is aimed in the backward direction at an angle of 30 degrees to the vertical.if the muscle velocity of gun is 4m/s, the value of speed of truck that will make the bullet come out vertically is | askiitians.com | 2021.21 | [
{
"text": "firstly, you should concentrate on terms '' muzzle velocity'' and ''aimed in''.muzzle velocity means velocity with respect to the gun and aimed in means angle made by bullet as seen from truck... to find velocity of truck that will make bullet come out vertically(as seen from ground frame ), velocity of truck must be equal to horizontal component of velocity of bullet wrt truck i.e 4cos(90-30)=2 m/s......",
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b9d93035e307de736eb66d2f322ee70a | hi sir i got 8247 rank in jee mains 2018..home state telangana.. possible nit with beachesplease suggest | askiitians.com | 2021.43 | [
{
"text": "go for nit -warangal in your homestate ..always give preference to college because in first year with good cgpa branch can be upgraded",
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f23b699a3207ca91f5c2deca463e3399 | why becl 2 is fumed in air? | askiitians.com | 2021.21 | [
{
"text": "dear ankur its a simple question becl2 reacts with moisture that are present in air to form hcl gas . so, that will form the fumes . hope it clears regards",
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3116ad1277a80949921d61ee09274b58 | what physical forces pull/press water upwards in vegetation? | askiitians.com | 2021.39 | [
{
"text": "the flow is due to two processes: first is evaporation of water from leafs (transpiration pull) and the second is a osmotic pressure in roots (root pressure). the first one is a passive process, powered by the difference of water potentials in air and soil; the second is active",
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95783b98ee17b04c56a21cf92ca8fc1e | if f(x)=x^2, g(x)=sinx and h(x)=x/2 then f(g(h(x)))=?? | askiitians.com | 2021.25 | [
{
"text": "f(g(h(x))) =f(g(x/2)) =f(sin(x/2)) =sin^2(x/2)",
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{
"text": "f(x)=x^2 g(x)=sinx h(x)=x/2 f(f(h(x))) a)f(g[x/2] f[sin x/2] =(sinx/2)^2 =sin^2 x/2",
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f1377449e7aaa92cc28e18dd4726b5cb | a box contains a white balls and b black balls and besides the box lies a large pile of black balls. two balls chosen at random are taken out of the box. if they are of the of the same colour , a black ball form the pile is put into the box. the procedure is repeated until the last two balls are remove dfrom the box and one last ball is put in. what is the probability that this last ball is white provided (1) a is even (2) a is odd? | askiitians.com | 2021.25 | [
{
"text": "dear student ways of selection (a+b) c 2 if the same color ie both white or both black new b’ = b-1 or b’ = b new selection (a+b’) c 2 same is done for another round and required answer can be calculated regadrs",
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9794be3bcd60d6c5e440bb421d0de680 | why does khf2 exist but khcl2does not? | askiitians.com | 2021.31 | [
{
"text": "it is because of the hydrogen bonding in khf2. thanks & regards gaurav singh askiitians faculty",
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] |
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1f494c6c12937bb37d86298a6a55f829 | how to start iit cources ? | askiitians.com | 2021.31 | [
{
"text": "1. you should join some reputed coaching institute like askiitians. 2 then follow the routine, as told by your coaching center. thanks & regards sher mohammad faculty askiitians",
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01c1a9493e8b45708813c290a41bb572 | the freezing of water is an endothermic process. heat must be removed from the water to make it freeze. a statement -1 is true, statement-2 is true and statement-2 is correct explanation for statement-1. b statement-1 is true, statement-2 is true and statement -2 is not the correct explanation for statement-1. c statement-1 is true, statement-2 is false. d statement-1 is false, statement-2 is | askiitians.com | 2021.21 | [
{
"text": "dear student, when water is cooled, it freezes. thus to freeze water, heat must be removed from it. hence the freezing of water is an exothermic process.",
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2873da8844d203efa920e0513a76331a | two particles are moving in the opposite direction with half the velocity of light.what is the relative velocity of a particle with respect to another one? | askiitians.com | 2021.39 | [
{
"text": "answer=((c/2)+(c/2))/(1+((c/2)(c/2)/c 2 ))",
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},
{
"text": "relative velocity is c(speed of light).",
"name": "",
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},
{
"text": "the answer is c/2-(-c/2)=c",
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d90161cb30136922b442e5c67808cf44 | what are theprospectus of production engg??????????? | askiitians.com | 2021.43 | [
{
"text": "production engineering is a as good as mechanical engineering but a few psus maybe 2 or 3 in the country dont allow prod engineers to sit in campus placements...else everything the syllabus the companies is same as mechanical engineering...",
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9b43572676454dc43c31b6c7438e4c25 | i have less time to prepare so which are the most scoring subject for jee mains. | askiitians.com | 2021.25 | [
{
"text": "https://www.askiitians.com/forums/most-scoring-topics-in-iit-jee/ please visit this",
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7f8a52c0a7719640c708a1d08da45afc | i have got 188 in iit jee advanced 2014. what rank can i expect and which branches in iit will i be able to get into? | askiitians.com | 2021.43 | [
{
"text": "your predicted jee advanced 2014 rank is between 2901 and 3000 according to the data of last year as released by iit, your possible branch & institute can be one of the following. name of institute course code course name iit bombay b5244 metallurgical engineering and materials science with m.tech. in ceramics and composites iit bombay b5245 metallurgical engineering and materials science with m.tech. in metallurgical process engineering iit bombay b5503 chemistry iit mandi c4110 computer science and engineering iit delhi d4139 textile technology iit delhi d5205 biochemical engineering and biotechnology iit indore e4110 computer science and engineering iit kharagpur g4120 industrial engineering iit kharagpur g4122 manufacturing science and engineering iit kharagpur g4133 ocean engineering and naval architecture iit kharagpur g5201 aerospace engineering iit kharagpur g5210 chemical engineering iit kharagpur g5215 civil engineering with any of the listed specialization iit hyderabad h4118 engineering science iit hyderabad h4125 mechanical engineering iit jodhpur j4110 computer science and engineering iit kanpur k4123 materials science and engineering iit kanpur k4201 chemistry iit kanpur k4202 economics iit kanpur k4204 physics iit madras m4127 metallurgical and materials engineering iit madras m5201 aerospace engineering iit madras m5202 aerospace engineering with m.tech. in applied mechanics with specializations in biomedical engineeri iit madras m5213 civil engineering (infrastructural civil engineering) iit madras m5215 civil engineering with any of the listed specialization iit madras m5602 physics iit gandhinagar n4111 electrical engineering iit gandhinagar n4125 mechanical engineering iit patna p4110 computer science and engineering iit roorkee r4107 chemical engineering iit roorkee r4109 civil engineering iit roorkee r4136 production and industrial engineering ism dhanbad s4110 computer science and engineering iit ropar u4111 electrical engineering iit(bhu) varanasi v4125 mechanical engineering iit(bhu) varanasi v4126 metallurgical engineering iit(bhu) varanasi v5223 electrical engineering with m.tech. in power electronics iit(bhu) varanasi v5233 mechanical engineering iit guwahati w4107 chemical engineering iit guwahati w4109 civil engineering iit guwahati w4117 engineering physics thanks bharat bajaj iit delhi askiitians faculty",
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f143d8bb57b2c0372be161c7047b6ced | 4. a circle touches a g8iven straight line and cuts off a constant length 2d from another straight line perpendicular to the first straight line. the locus of the centre of the circle is (a) hyperbola (b) circle (c) parabola (d) pair of perpendicular lines [the two straight lines to be considered as coordinate axes] | askiitians.com | 2021.25 | [
{
"text": "ans: (a) hyperbola sol: let the centre of circle be (h, k), it touches the x-axis and cut a constant lenght of ‘2d’ on y-axis. equation of circle: circle intersection with y-axis (x = 0); now, equate given length with difference of intersecting coordinates thanks & regards jitender singh iit delhi askiitians faculty",
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73ae4ca21fe740582d5fa21055501bf9 | sir would you plz suggest how to make important and effective notes in 11$12 {pcm} . do they really help in scoring high marks and cracking iit plz reply soon pc | askiitians.com | 2021.31 | [
{
"text": "hi palash, for preparing jee, notes peparation is a very vital thing n its very gud to know dat u know d importance of notes preparation.....to make it effective , wud suggest dat if u hav joined any coaching institute den dey will provide an effective notes which wud be sufficient,in dat case u only hav to do one thing dat just make sure u write in d class properly n make points from wat ur teachers r saying,,,,,also when u read ur notes for d 1st time den highlit d important point such dat if u hav to revise d whole course at exam time , u can easily do it by going thru dose important points ,,... this is d most effective way of making gud notes......u can also make d list of formulas of d chapter in d end for dis will also make ur revision very easy..... so if u can dese small things den dat will help u alot in d future exams... thanks & all d best!!!!",
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e420887b90fb3b4ebf3dbd65197cd654 | determine the oxidation number of chromium in the compounds: fe(cro 2 ) 2 na 3 [cr(oh) 6 ] please also write the steps and required points to be kept in mind while finding os of such compounds... | askiitians.com | 2021.25 | [
{
"text": "hi, fe can be +2 or +3 o is -2 therfore cr can be +3 or +3.5 therefore cr is in +3 oxidation state oh has -1 na has +1 therefore cr is in +3 os",
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] |
|
497b1b9105f0a3d969969da3884d7a62 | how can we make a plastic which is less harmful to environment | askiitians.com | 2021.21 | [
{
"text": "plastics can be made less harmful through:- (1) by using less harmful recycled plastics :- choosing products made with recycled plastic helps curb landfill waste and encourages further plastics recycling. in 2007, the u.s recycled less than 7 percent of discarded plastic. this amounted to 2.1 million tons of plastic. because recycled plastic can be used to produce such diverse products as carpeting and toothbrushes, purchasing them can also reduce the environmental impact of manufacturing consumer products made with other virgin materials, such as cotton and polyester. (2 )biodegradable trash bags . manufacturers of biodegradable plastics aim to create products that break down into harmless substances like water, carbon dioxide and biomass, rather than toxic contaminants",
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7bb0a81c9ab89b9c56687f51ce6a6c5f | 58.5 gm of nacl and 180gm of glucose were separately dissolved in 1000ml of water. identify the correct statement regarding the elevation of boiling point (b.p.) of the resulting solutions. a. nacl solution will show higher elevation of b.p. b. glucose solution will show higher elevation of b.p. c. both the solution will show equal elevation of b.p. d. the b.p. elevation will be shown by neither of the solutions | askiitians.com | 2021.31 | [
{
"text": "nacl solution will have higher elevation of boiling point (δt b ) than glucose solution..............................",
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] |
|
a8f7d9143bbcbdbada04a5ea6866ebb7 | respected sir or madam i want some brief information about logarithms chapter. | askiitians.com | 2021.43 | [
{
"text": "dear student please find the link below https://www.askiitians.com/iit-jee-algebra/set-relations-functions/logarithmic-function.aspx regards",
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},
{
"text": "dear harsh it is not possible , to discuss whole chapter here, you can ask your doubt , we will help you god luck cheers",
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6b4072d1fadccd7541c33eeba51c4a9f | the radius of a solid iron sphere is 8cm. 8 rings of iron plate of external radius 20/3cm and the thickness 3cm are made by melting this sphere. find the internal diameter of each ring | askiitians.com | 2021.25 | [
{
"text": "volume would be same. volume for big sphere = volume of total small spheres. 4*pi*8^3/3 = 8*pi*(( 20/3)^3 – r^3)*3 on solving we get, r = 4 cm.",
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37214335529473ebc355522dbec9ef47 | a certain number when divided by 899 leaves the remainder 63.find the remanider when the same number is divided by 29. please give the explanation. | askiitians.com | 2021.43 | [
{
"text": "let the no be 899*x+63 [dividend=divisor*quotient+remainder] when this no is divided by 29, 899*x gives remainder zero and 63 gives remainder 5 therefore required remainder is 5. thanks & regards sunil raikwar askiitian's faculty",
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{
"text": "thank you sir .",
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"text": "number =899*quotient+63. numbar =29*31*quotient+2*29+5. so the reminder obtained by dividing the number by 29 is 5",
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9cc67a32a1a32a90456d2b5470fbf6d8 | a hollow conducting spherical shell of inner radius r1 and outer radius r2 encloses a charge +q (off centre) inside it.the charge is at distance d from the centre of the shell( d | askiitians.com | 2021.25 | [
{
"text": "hiii the total charge on inner surface = q first we will find electric field due to point charge at centre then find potential by using formula v = integration of e.dl",
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{
"text": "hiii you need to use proper limit for integration first from infinity to r2 , then r2 to r1 , then r1 to 0. hope this heps cheers",
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|
6de8dad8e5b066cfee62e789c595d8f7 | hello please anyone provide me with the answer of the question uploaded. thank you | askiitians.com | 2021.21 | [
{
"text": "dear student let common root be t sub eqn 2 from 1 (p-q)t + (q-p) = 0 t = 1 put t=1 in one eqn p+q+1=0 regards",
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|
5f9ec431ca33a8f8f54e61613f475cf8 | how find no.of kmno 4 required to oxidise 1 mol of fe(c 2 o 2 ) in acidic medium? | askiitians.com | 2021.21 | [
{
"text": "mno4- + 5fe+2 + 8h+ ---------------> mn+2 + 5fe+3 + 4h2o so for one of fe to be oxidized required mole of kmno4 = 1/5 = 0.2 thank you ruchi askiitians faculty",
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] |
|
ff52702be9d29199b3bd79dc8b18bd17 | sinx/a=cosx/b=tanx/c=2 when [0 | askiitians.com | 2021.25 | [
{
"text": "please complete the question. ..................................................................................................................................................................................................................................................................................",
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|
ea66b3eb855d8919d5a7d8c642f1e07a | q .1- a projectile projected at some angle with vel. 50m/s crosses a 20m wall after 4s from the time of projection. the angle of projection of particle will be ? ( pls give full sol.) 2. a swimmer can swim in still water at 1.5m/s , the river is flowing with 2m/s from left to right. the minimum time taken by swimmer to cross the river and drift will be? ( pls full sol. ) | askiitians.com | 2021.25 | [
{
"text": "q2 please tell me the width of river abhishek doyal iit bombay askiitian tutor",
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"text": "abhishek doyal iit bombay askiitian tutor",
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"text": "qn 1: we can solve almost every projectile question using just the basic kinematics formulas. let us take the sign convention for this problem as g (acceleration due to gravity) as -10m/s^2 in the upward direction (+y axis) and +10m/s^2 in the downward direction (-y axis). let initial vel be u u=50m/s (given) let time be t t=4 sec (given) let x be the angle of projection which we have to find. here the 20 m wall is the vertical distance covered by the projectile. the range of the projectile would be the horizontal distance covered by it but we dont need to worry about it here. we can split ‘u’ into its rectangular components the vertical displacement 20 m of the projectile is due to only its vertical component of u (uy) which is usinx. =50sinx y(vertical displacement)=uyt+1/2(-g)(t)^2 =uyt-1/2(g)(t)^2 20=50sinx-1/2(10)(4)^2 = 20=50sinx-(5)(16) = 20=50sinx-80 = 50sinx=100 = sinx=1/2 = x=30 degrees hope this helps!!!!",
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{
"text": "small correction. the procedure and the final answer is the same but i made a calculation mistake in between i missed the t there 20=50sinx * 4- 5*16 =200sinx-80 100=200sinx sinx=1/2 hence x=30 degrees (in my previous calculations we are getting sinx=100/50 =2 which is obviously wrong) sorry about that",
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"text": "hello thanks & regards arun kumar btech, iit delhi askiitians faculty",
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fc14406ae437d3ee5d3cb66df2520d30 | generally metals react with acids to give salt and hydrogen gas. which of the following acids does not give hydrogen gas on reacting with metals (except mn and mg) ? [ncert exemplar problems] (a) h2so4 (b) hcl (c) hno3 (d) all of these | askiitians.com | 2021.31 | [
{
"text": "answer: c",
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] |
|
c347449187676f7b2d3b7e72dd336f14 | my air in aieee is 30509...plz suggest best colleges according to my rank...m a general category rank from u.p...... | askiitians.com | 2021.21 | [
{
"text": "ankita check the site www.careerpointgroup.com for aieee colleges based on your rank.... u will get all the available branches and colleges at ur rank here... if u are ok with biotechnology u might get it in final rounds of counselling... please approve this answer by clicking yes below... i have 0 points......",
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f4cbada636abace6dc748009cc0fa004 | anomalous behavior boron | askiitians.com | 2021.31 | [
{
"text": "anomalous behavior boron like li and be, boron – the first member of group 13 – also shows anomalous behavior due to its low size and high nuclear charge/size ratio, high electronegativity and non – availability of d electrons. the main point of differences is:- 1. boron is a typical non-metal whereas other members are metals. 2. boron is a bad conductor of electricity whereas others are good conductors. 3. boron shows allotropy and exists in two forms—crystalline and amorphous. aluminum is a soft metal and does not exist in different forms. 4. like other non metals, the melting point and boiling point of boron are much highr than those of others elements of group 13. 5. boron forms only covalent compounds whereas aluminum and other elements of group 13 also do form some ionic compounds. 6. hydroxides and oxides of boron are acidic in nature whereas those of others are amphoteric and basic. 7. the trihalides of boron exist as monomers. on the other hand, aluminium halides exist as dimmers. 8. the hydrides of boron i.e. boranes are quite stable while those of alumimium are unstable. 9. dilute acids have no action on boron. other members of group 13 liberate h2 from dilute acids. 10. borates are more stable than aluminates. 11. boron exhibit maximum covalency of four e.g., bh4- ion while other members exhibit a maximum covalency of six e.g. 12. boron does not decompose steam while other members do so. 13. boron combines with metals to give horides e.g., mg3b3. others members from simply alloys. 14. concentrated nitric acid oxidizes boron to boric acid but no such action is noticed by other group members.",
"name": "",
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},
{
"text": "dear student, please find the attached answer to your question. anomalous behavior boron like li and be, boron – the first member of group 13 – also shows anomalous behavior due to its low size and high nuclear charge/size ratio, high electronegativity and non – availability of d electrons. the main point of differences is:- boron is a typical non-metal whereas other members are metals. boron is a bad conductor of electricity whereas others are good conductors. boron shows allotropy and exists in two forms—crystalline and amorphous. aluminum is a soft metal and does not exist in different forms. like other non metals, the melting point and boiling point of boron are much highr than those of others elements of group 13. boron forms only covalent compounds whereas aluminum and other elements of group 13 also do form some ionic compounds. hydroxides and oxides of boron are acidic in nature whereas those of others are amphoteric and basic. the trihalides of boron exist as monomers. on the other hand, aluminium halides exist as dimmers. the hydrides of boron i.e. boranes are quite stable while those of alumimium are unstable. dilute acids have no action on boron. other members of group 13 liberate h2 from dilute acids. borates are more stable than aluminates. boron exhibit maximum covalency of four e.g., bh 4 - ion while other members exhibit a maximum covalency of six e.g. boron does not decompose steam while other members do so. boron combines with metals to give horides e.g., mg 3 b 3 . others members from simply alloys. concentrated nitric acid oxidizes boron to boric acid but no such action is noticed by other group members. hope it helps. thanks and regards, kushagra",
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] |
|
28d55b33cdea4f9c80c8a52694440efd | find interval for which the function f(x)=xe x(1-x) is increasing or decreasing function | askiitians.com | 2021.25 | [
{
"text": "differentiate the given equation you get e^x(1-x) + (xe^x(1-x))*(1-2x) this can be written as (e^x(1-x) )*[1+x - 2x^2] this equation is +ve if 1+x - 2x^2) is >0 this equation is positive in (-ve infinity to -1/2)....union ......(1 to +ve infinity)",
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}
] |
|
65e62aaca1a852df4ce8c384a343b333 | in the same above question rectangular hexagon ab+ac+ad+ae+af=6ao | askiitians.com | 2021.25 | [
{
"text": "hello mohit you havent attached a pic, but i ll still ans the ques :) ab+ac+ad+ae+af=ab+(ac+af)+ad+ae =ab+(ac+cd)+ad+ae [since af=cd] =ab+ad+ad+ae =2ad+(ab+ae) =2ad+(ed+ae) [since ab=ed] =2ad+ad =3ad =3*(2ao) [since o is the center and ao=od] =6ao kindly approve :)",
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}
] |
|
64e9a9a9ea306a5da69490dfbd455c57 | two points a & b,diametrically opposite ona disc of radius r have linear velocity v and 2v in same direction. find angular speed of the disc. | askiitians.com | 2021.39 | [
{
"text": "dear rajan see the pic for solution all the best. akash goyal askiitiansexpert-iitd please feel free to post as many doubts on our discussion forum as you can. we are all iitians and here to help you in your iit jee preparation. win exciting gifts by answering the questions on discussion forum. so help discuss any query on askiitians forum and become an elite expert league askiitian. now you score 5+15 points by uploading your pic and downloading the askiitians toolbar respectively : click here to download the toolbar..",
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|
155fb3f2aac5de8cdf27ad52e78d86ce | which of the following is positively charged? (a) a -particle (b) ß-particle (c) g -rays (d) x-rays | askiitians.com | 2021.43 | [
{
"text": "(a) a rays contain helium nuclei which contains 2 unit of positive charge.",
"name": "",
"is_accepted": false
}
] |
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878c801d44694081e9e4e29ac3852bdd | 2 particles bearing mass in the ratio n:1 are interconnected by a light inextensible string that passes over a smooth pulley.if the system is released,then the acceleration of the centre of mass of the system is? please solve the above question with proper explaination. | askiitians.com | 2021.31 | [
{
"text": "draw the fbd of the system , write eqn of motion and obtain the acceleration of the bodies let us assumw it comes out as a now acceleration of the centre of mass will be given by = (m 1 a-m 2 a)/(m 1 +m 2 ) negative sign because of the oppositedly directed acc n of the two bodies",
"name": "",
"is_accepted": false
},
{
"text": "ans is [n-1/n+1]^2*g in downwad direction. if im right then like it , i will give the solution",
"name": "",
"is_accepted": false
},
{
"text": "solution find acc. of both the blocks and put those in acm=m1a1+m2aa2/m1+m2 with signs!!!!!!!! [very important]. thanxxx",
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}
] |
|
a076a20c037660381822842d1784e908 | i belongs to crl pwd and i scored 131 in jee advanced 2017.can i get admission in iit in cse branch. | askiitians.com | 2021.21 | [
{
"text": "http://blog.askiitians.com/find-out-the-course-options-in-iit-madras-according-to-your-rank-in-jee/ please check in the following link for further details.",
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|
81a89c32ef452db2e2fb03deaee0f1e9 | when body is earth connected electrons from the earth flow into the body.this means body isa)unchargedb)charged positivelyc)charged negativelyd)an insulator | askiitians.com | 2021.31 | [
{
"text": "if a body is grounded and electrons starts flowing into the body from then earth this would mean that the body has an excess of positive charges. the charges inside the body are attracting the negative electrons from earth as a potential difference is being developed at the two ends, the earth and the body. so, the body is positively charged before grounding. hence correct option is ‘b’",
"name": "",
"is_accepted": false
},
{
"text": "since proton is much much heavier than negative one. there there is only flow of electrons possible. electrons are coming to body from earth. therefore body is positively charged.",
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"is_accepted": false
}
] |
|
afbfc881f154673c76c39049dd77b67f | can i use the revision notes on your webpage for my own youtube channel. cause i take my class for my shool students using youtube | askiitians.com | 2021.43 | [
{
"text": "dear student you should seek permission in written from concerned team. thanks",
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] |
|
03b96dab49a4201558ace68029470aeb | plz ans.................................................................................... | askiitians.com | 2021.25 | [
{
"text": "dear student there is no image attached. please attach an image or repost the question. i will be happy to help you. regards arun (askiitians forum expert)",
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] |
|
f0bf4a1e08b1fbbecdd86c049683d6fc | mere board exams me math me 39 marks the jabki physics me 59 aur chemistry me 77 the. meri uptu me 2659 rank hai . mujhe collage milne koi problem to nahi hogi math ki wajah se?? | askiitians.com | 2021.25 | [
{
"text": "dear akhilesh, you must check eligibility criteria from uptu website, your aggregate must be greater then 60% cracking iit just got more exciting,it s not just all about getting assistance from iitians, alongside target achievement and rewards play an important role. askiitians has it all for you, wherein you get assistance only from iitians for your preparation and win by answering queries in the discussion forums. reward points 5 + 15 for all those who upload their pic and download the askiitians toolbar, just a simple to download the toolbar…. so start the brain storming…. become a leader with elite expert league askiitians thanks aman bansal askiitian expert",
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|
ffd9656e546508add74c86665bc659d1 | most weightage topics in aieee | askiitians.com | 2021.21 | [
{
"text": "dear sumit, following topic will carry the most marks in aieee examination: mathematics: complex numbers and quadratic equations binomial theorem and its simple applications limit, continuity and differentiability differential calculus conics trigonometry physics: kinematics laws of motion work, energy and power rotational motion oscillations and waves chemistry: chemical bonding and molecular structure chemical thermodynamics solutions equilibrium block elements (alkali and alkaline earth metals) p - block elements: group - 13 to group 18 elements d – and f – block elements iupac nomenclature of carbon compounds. please feel free to post as many doubts on our discussion forum as you can. if you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. for further information visit the following links: http://www.askiitians.com/iit-study-material/ http://www.askiitians.com/mock-test/ http://www.askiitians.com/iit-jee-test-series.aspx thanks and regards akhilesh shukla",
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] |
|
459d1da10c7314e27a2c0226b8036ad7 | what is the rank and marks neede in jee and aieee for admission to iisc bangalore | askiitians.com | 2021.43 | [
{
"text": "dear student, you have to get rank below 5000 in order to seek admission in iisc..... best of luck.....",
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}
] |
|
ad114d0391324658e41ee618ad84c577 | 5. is it possible to design a rectangular park of perimeter 80 and area 400 m2? if so find its length and breadth. | askiitians.com | 2021.43 | [
{
"text": "let the length and breadth of the park be l and b. perimeter of the rectangular park = 2 (l + b) = 80 so, l + b = 40 or, b = 40 – l area of the rectangular park = l×b = l(40 – l) = 40l – l2 = 400 l2 – 40l + 400 = 0, which is a quadratic equation. comparing the equation with ax2 + bx + c = 0, we get a = 1, b = -40, c = 400 since, discriminant = b2 – 4ac =(-40)2 – 4 × 400 = 1600 – 1600 = 0 thus, b2 – 4ac = 0 therefore, this equation has equal real roots. hence, the situation is possible. root of the equation, l = –b/2a l = (40)/2(1) = 40/2 = 20 therefore, length of rectangular park, l = 20 m and breadth of the park, b = 40 – l = 40 – 20 = 20 m.",
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}
] |
|
7c0b4e491084661235f1b2163d6a2368 | why wont we get dark lines corresponding to elements present in earths atmosphere in the solar spectrum???? | askiitians.com | 2021.39 | [
{
"text": "dear anoop, please specify in what respect or about what line you are talking about... best of luck...!!!! cracking iit just got more exciting,it’s not just all about getting assistance from iitians, alongside target achievement and rewards play an important role. askiitians has it all for you, wherein you get assistance only from iitians for your preparation and win exciting gifts by answering queries in the discussion forums. reward points 5 + 15 for all those who upload their pic and download the askiitians toolbar, just a simple click here to download the toolbar…. so start the brain storming…. become a leader with elite expert league askiitians thanks aman bansal askiitian expert",
"name": "",
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|
1aa5e482c2cc8151968e774d6e483968 | my rank in jee mains is about 145000..... which govt colleges am i supposed to get ?? without any reservation in general catagory, and not even in female quota. please help me out of this.. | askiitians.com | 2021.31 | [
{
"text": "dear student please try for regional government colleges and non core streams for nits all the very best regards",
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}
] |
|
1e2c95288388ea57f528399e4a19a1ca | which college can i get with aieee 70000 rank | askiitians.com | 2021.31 | [
{
"text": "dear manish roy, please provide your category & home state for listing your colleges at this rank !! please reply as soon as possible..!!",
"name": "",
"is_accepted": false
},
{
"text": "which college can i get with aiee rank 70000 and home state madhya pradesh with cat general",
"name": "",
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}
] |
|
29b52fa1152db1a5f87bb49dfd2a1264 | what is admission through dasa/mea in btech in mnnit allahabad? mean of dasa? | askiitians.com | 2021.21 | [
{
"text": "dasa=direct admission of students abroad mnit allahabad is good institute",
"name": "",
"is_accepted": false
},
{
"text": "dasa=direct admission of students abroad mnit allahabad is good institute",
"name": "",
"is_accepted": false
}
] |
|
32d283ec0f90e589ec20b7a6fc5311e4 | 2nahco3 naco3 + h2o + co2 a- sodium bicarbonate is incorrect b-sodium carbonate is incorrect c-carbon dioxide is incorrect b-water is incorrect | askiitians.com | 2021.31 | [
{
"text": "sodium hydrogen carbonate or sodium bicarbonate is used as a fire extinguisher. when heated to a high temperature, the chemical properties of this salt make it produce lots of carbon dioxide and remove oxygen. this reduces the amount of oxygen and puts the fire out. the reaction also produces a small quantity of water and sodium carbonate as by-products.",
"name": "",
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},
{
"text": "answer: ur answer is... explanation: water is incorrect thank u !",
"name": "",
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|
437bb37ac8d690e52e810a5957b9fa9e | question 7: name the type of carbohydrate that can be digested by ruminants but not by humans. give the reason also. | askiitians.com | 2021.31 | [
{
"text": "answer: cellulose is a type of carbohydrate that can be digested by ruminants and not by humans. ruminants have a large sac-like structure between small and large intestine where the food containing cellulose is digested by the action of certain bacteria. on the other hand, humans cannot digest cellulose, as the cellulose digesting enzymes are absent in them",
"name": "",
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] |
|
a83e707e8c17b0862d60cabcda019490 | ubisch bodies are surrounded by sporopollenin or release sporopollenin to make the exine of pollen grain ? | askiitians.com | 2021.39 | [
{
"text": "i think u should have to visit this website and u will be clarified............ global science book.info",
"name": "",
"is_accepted": false
},
{
"text": "ubisch bodies are secreted by tapetum. it helps in the development of pollen grain. the ubisch body could be said as part of sporopollenin. when viewed under microscope it looks like cysts adhered to the exine wall. you can google for image of ubisch bodies for better understanding",
"name": "",
"is_accepted": false
},
{
"text": "ubisch bodies are granular bodies secreted by tapetum which form exine layer of pollen grain. they are also called orbicules",
"name": "",
"is_accepted": false
}
] |
|
4d3892898b370383c7f8e929c5cdf991 | find the magnitude of vertex angle of isosceles triangle of given area a such that radius r of circle inscribed into the triangle is maximum | askiitians.com | 2021.43 | [
{
"text": "dear student, here is help with a solution to finding angles of a triangle having maximum area if it is drawn within a circle so that the triangle's vertices just touch the circle's perimeter (i.e., a triangle inscribed within a circle). first draw an isosceles triangle within a circle having an arbitrary radius equal to r: . the angle at the top of the triangle is assigned to phi. one half of this angle is phi/2. the two equal angles at the base of the triangle are assigned to theta. the two equal side lengths of this triangle are assigned to l. the base of the triangle is assigned to b. the height of the triangle is assigned to h. now, it is well known that the area (a) of any triangle is: a = (1/2)bh. to find the angles associated with the inscribed triangle (described above) having a maximum area, one may first re-express the area formula above in terms involving only phi (or phi/2) and r. you should be able to show that: l/2 = rcos(phi/2), so l = 2rcos(phi/2), and b = 2[2rcos(phi/2)sin(phi/2)] = 4rcos(phi/2)sin(phi/2), and h = 2rcos(phi/2)cos(phi/2) = 2rcos^2(phi/2). therefore: a = (1/2)bh = (1/2)[4rcos(phi/2)sin(phi/2)][2rcos^2(phi/2)], or a = 4r^2[cos^3(phi/2)sin(phi/2)] . now, one may take the first derivative of a with respect to phi [i.e., da/dphi] by holding r constant because the angles associated with the inscribed triangle having a maximum area are independent of the circle's size. if [da/dphi] is set to equal zero, one may solve for the value of phi that satisfies this condition. once that value of phi is known, one may solve for theta because: phi + 2theta = 180. then, all the angles associated with the triangle having a maximum area will be found. upon simplification, one should find that: [da/dphi] = 2r^2cos^2(phi/2)[cos^2(phi/2) - 3sin^2(phi/2)]. setting: [cos^2(phi/2) - 3sin^2(phi/2)] = 0, one can show that: phi/2 = 30 deg, so: phi = 60 deg, therefore, 2theta = 120 deg, and, theta = 60 deg. therefore, the inscribed triangle having a maximum area is an equilateral triangle regards sumit",
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}
] |
|
27dc47ef44c4066f20dcbc6cb156880c | hello, i am starting 10 th grade in the united states and we are planning on moving next year back to india. so here in the us, we do not have any major exams for 10 th grade like the boards, so how will it work for me if i move back to india for 11 th grade. please any advise on what i should do? thank you | askiitians.com | 2021.31 | [
{
"text": "dear student don't worry just pass 10th class in usa. and when you come india, take admission in class11th",
"name": "",
"is_accepted": false
},
{
"text": "i think you should come to india for preparation of competitive exams such as jee and neet so i will say you to joi class 11 th from india hope it will help thanks",
"name": "",
"is_accepted": false
}
] |
|
ef6e3b2bdd64aff309f7f5de93e4fb6e | i am in class 12 and i am targetting for iit-jee ,so i have a problem that i love a girl so she knews that i love her but the problem is she is not giving me any reply,she is not interested in boyfriend/dating,so if suppose in future she marries to any other boy,then i am thinking that i will commit suicide because agar mein jeeta hu ,to mein mar-mar ke jeeunga ,naa to mein marunga naa to mein jeeunga.aur upar se iit-jee ka burden hai.so how to overcome suicidal thoughts as you know that many students preparing for iit-jee has committed suicide and i am worrying that i will be among the people who suicide.so i am requesting you....please...tell me how to overcome suicidal thoughts. | askiitians.com | 2021.25 | [
{
"text": "@ xavier i am requesting you , please donot waste your time in such thoughts as this will not going to benifit you in future . just remove about that matter from the mind , and focus on study , beacuse if u will get proper rank in jee and admitted to any one of the iits , then i could guarentee you that u will get many more girls , and in fact , u will going to meet a very very energetic people in iit including iit professors . so, donot even thinks abt the suicide right now , just forget abt that matter for remaining month , and if she is not going to give any reply , then just forget about it ,, beacuse in life what u require is a good maintainance of yourself , with a high package job and salary , after getting that u can spend time in these matter if u are intrested , but now , plzz dnt divert your mind about it .. you are the only person who can controll your mind , noone else , i can only motivate you ,, all the best ..",
"name": "",
"is_accepted": false
},
{
"text": "listen to sandeep maheshwaris videos on youtube. you will get direction to life and understand the basic things about life. just watch his videos he has also posted on how to overcome suicidal thoughts",
"name": "",
"is_accepted": false
}
] |
|
f4889c2dbd5c35189d9f75b048f2b6b0 | why phenol doesn,t react with sodium carbonate and sodium bicarbonate? | askiitians.com | 2021.31 | [
{
"text": "please elaborate and elucidate your explanation.",
"name": "",
"is_accepted": false
},
{
"text": "because phenol is not more acidic than sodium carbonate and sodium bicarbonate. plz. approve my answer by clicking yes given below, if u loved it... plz/.... and best of luck!!!!!!!!!!!!!!!!!",
"name": "",
"is_accepted": false
}
] |
|
13ee8b0a8610f6ab6747a48ddabf5b2e | extranuclear genes occur in plastids- and not inherited plasmid- and not inherited mitochondria- and inherited by female mitochondria- snd inherited by male | askiitians.com | 2021.21 | [
{
"text": "extra nuclear genes:genes included in the dna present in organelles other than the nucleus, such as the mitochondria and chloroplasts, some of which code for the synthesis of proteins. the dna of these organelles is inherited by the offspring via the cytoplasm of the gametes. in organisms in which one gamete is much larger than the other, so that the smaller gamete contains very little cytoplasm, one parent will contribute most or all of the extra nuclear genes. for example, humanmitochondrial dnais passed from generation to generation through the maternal line in the ovum.",
"name": "",
"is_accepted": false
}
] |
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