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443f676052d7396544e3ab0f9d9b60db | give reason: is clay a solid? | askiitians.com | 2021.43 | [
{
"text": "hi, different people have different views on this . this is very interesting question . my views for different answer: i would say that clay is a solid. even if you mix lots of water into it, so that it behaves like a liquid by flowing- it’s still lots of (very small!) solid particles that are suspended in a liquid. if you were to leave the mixture in a glass for long enough, you’d see the particles fall to the bottom and separate away from the water. solid . because it's not a liquid, gas, or plasma. clay is a solid . it can be liquified or have water added to it, but it is still clay",
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{
"text": "hi, different people have different views on this . this is very interesting question . my views for different answer: i would say that clay is a solid. even if you mix lots of water into it, so that it behaves like a liquid by flowing- it’s still lots of (very small!) solid particles that are suspended in a liquid. if you were to leave the mixture in a glass for long enough, you’d see the particles fall to the bottom and separate away from the water. solid . because it's not a liquid, gas, or plasma. clay is a solid . it can be liquified or have water added to it, but it is still clay",
"name": "",
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] |
|
d6f82e8c7e25f2f793232e517228ba22 | who discovered the mass of earth for first time | askiitians.com | 2021.39 | [
{
"text": "hi rohit, the first person that we have records for was eratosthenes of cyrene",
"name": "",
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}
] |
|
7ce2acdcfc9fb4e856dd9067d59e7958 | from 6 different novels and 3 different dictionaries, 4 novels and 1 dictionary are to be selected and arranged in a row on a shelf so that the dictionary is always in the middle. then the number of such arrangements is ? | askiitians.com | 2021.21 | [
{
"text": "",
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},
{
"text": "dear student please refer the clear image , the image above does not looks good , it is blurr. hope for the best good luck cheers",
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}
] |
|
018c974b74ef2451d5e0d62840b41d8b | hello sir, my name is bhuvan. iam studying second year intermidiate. my goal is to get seat in bits pilani. i want to know some tips about the bitsat exam. whatever i know about the bitsat examination is that it is purely based on conceptual questions. and not like the jee exams. and ofcourse, compared to bitsat, jee exams are even more tough. but i’ve seen one of my seniors who qualified in jee mains 2015 exam couldn’t reach upto the expected cutoff marks in bitsat 2015 exam. so could u please help me in providing tips to crack the bitsat 2016 examination. thank you | askiitians.com | 2021.21 | [
{
"text": "bits is not a tough exam u can easily score if u will focus on it properly as their are 150 questions u need to be very fast in answering infact u need to answer 12 bonus questions also to improve speed practice lot of problems focus more on chemistry as it takes less time and try to score more marks in it take a lot of online mock tests before the final exam wn it comes to engish n logical resaning dont prepair for it seprately go along with ur school board syllbus approve if usefull incase of any doubts ask in ans box",
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{
"text": "so, almost all the questions in bitsat are given conceptual wise right? if so are the ncert text books enough for its preperation? and one more point, iam studying second year intermediate in a state level. so we study and refer from the textbooks published by our board of intermediate educations. these are the telugu akademi textbooks, which are supported by the ncert. are these text books sufficient for preperation, or should i also refer to ncert texbooks??",
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{
"text": "ncert inka mana ipe books rondu same just cover page is different {even i studied same telugu akamadi books in inter (4m hyd)} so need not buy ncert seprately not almost all questions are conceptual out 40 10 to15 may be conceptual so ipe textbooks(ncert) is not sufficiant it is just the 1 st step u need do even more so i ask u to buy arihant(bits) book for practing problems bits paper is nt consitant some time u get very easy paper n some time u get a very diffucalt paper u need to be ready to face any sought of paper speaking frankly i gave this exam 2 times(2014,2015) wn i wrote it for the first time belive me the paper was damm tough (phy,chem) u willl be shocked if i say u wt all questionns i faced in the paper bt wn i wrote it 2 nd time (2015) the paper was easy so please dont prepair for low level paper better prepair a step ahead plz approve if usefull and incase of further questions ask in ans box",
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|
b5f00c6705e4b22bc51175b8caedd8e8 | what are galvanic cells tell me about that and give me one example | askiitians.com | 2021.21 | [
{
"text": "galvanic cell: a galvanic cell is an electro chemical cell that converts the chemical energy of a spontaneous red-ox reaction into electrical energy. daniel cell is an example of galvanic cells",
"name": "",
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},
{
"text": "galvanic cell or voltic cell named after luigi galvani or alsandro volta respectively.galvanic cell is an electric cell that derives electrical energy from spontaneous redox reactions taking place with in the cell.",
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|
896b0a347d7bb7202286e3a8e9c94825 | in the jee mains syllabus there is “tendency for catenation”. which page no. and heading does it come in the chemistry textbook ? pls. guide me. | askiitians.com | 2021.21 | [
{
"text": "unit – 15 page no. – 125",
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] |
|
255f8d6a73e4d54f5921c0159a51ca3e | integrate [sin(x+a)]/[sin(x+b)] a and b are constants | askiitians.com | 2021.31 | [
{
"text": "use over here substitution let x+a=t and further solve plz aprve the then u could use by parts",
"name": "",
"is_accepted": false
},
{
"text": "create ((x+b) + (a-b)) in numerator and then apply sin(a+b) formula then you will be able to solve it. if not then your concepts are weak",
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}
] |
|
516587ff247d3f021fb702b3752d029d | is the tempreature of an isolated system( no interaction with the environment) conserved.? explain | askiitians.com | 2021.25 | [
{
"text": "dear student please find the link attached https://www.askiitians.com/forums/thermal-physics/is-the-temperature-of-an-isolated-system-no-inter\\_123309.htm#:~:text=a%20system%20in%20which%20neither,of%20the%20system%20is%20conserved . regards",
"name": "",
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|
7bd219ad3ffc075b2526bddb43d28be9 | a block of mass m having charge q is placed on smooth horizontal table and is connected to a wall through an unstressed spring of spring constant k . a horizontal electric field is switched on. find the amplitude of the resulting shm on the block. | askiitians.com | 2021.31 | [
{
"text": "since you are sure that it is shm. i ll find the amplitude. here you can see in the first expression that acceleration is proportional to -x that's why it is shm thanks & regards arun kumar iit delhi askiitians faculty",
"name": "",
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{
"text": "since you are sure that it is shm. i’’ll find the amplitude. here you can see in the first expression that acceleration is proportional to -x that's why it is shm",
"name": "",
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},
{
"text": "dear student, please find the attached solution to your problem. a = -k/m * x + eq/m since, a is directly proportional to – x hence, it is shm. hope it helps. thanks and regards, kushagra",
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|
a435fda7fcce5a840dc01f8665e3b8ff | let r be the set of real numbers and the mapping f :r ? r and g : r ? r be defined by f(x) = 5 – x2 and g(x) = 3x – 4 , then the value of (fog)(–1) is (a) –44 (b) –54 (c) –32 (d) –64 | askiitians.com | 2021.31 | [
{
"text": "ans: -44 thanks & regards jitender singh iit delhi askiitians faculty",
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|
7d576f0af2684cf5f020893f7318dc13 | limit n-infinity (4^n + 5^n)^1/n. | askiitians.com | 2021.25 | [
{
"text": "hello student, thanks & regards arun kumar btech, iit delhi askiitians faculty",
"name": "",
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}
] |
|
90b444e5f43efbddfbd860118e5b15ce | i am interested in aerospace engineering wat to prefer iit or iist if iit wat rank must i get to get into top iits (wat is d best iit for aerospace) if iist wat rank must i get? waiting 4 reply tejaswi | askiitians.com | 2021.21 | [
{
"text": "dear student, prefer iit get a rank below 1200.....",
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|
4be69509f030f4ee990fea4b391f80c9 | if molecular weight greater then is the entropy greater | askiitians.com | 2021.39 | [
{
"text": "this is not always true. this is generally right but if there are two compounds a and b a has higher molecular weight than b but b has more complexity then, b will have higher entropy inspire of lower molecular mass",
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] |
|
c6a8a15b473c752ffd5fb08057664a54 | i mix solute in solvent,why elevation in boiling point? | askiitians.com | 2021.21 | [
{
"text": "@ adil its a simple concept , when u are mixing solute particle with solvent , then solute particle will take space somewhere within the solvent particle , so, there will be more force required to break them apart and to boil the solvent , so, due to that more force we have elevation in boiling point , and remember its a colligative property . and its going to depend upon the no of solute particle . hope it clears now",
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|
919664aed1e18dca15367a34e6729578 | why among the halides of group 16,fluorides are the most stable? | askiitians.com | 2021.43 | [
{
"text": "among the halides of group 16,flourides are the most stable because there are many reasons for this property.there are, small atomic size. more electronegativity.",
"name": "",
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}
] |
|
fc3c9f9cf974473c90d2e6871eff5819 | the acceleration of a particle is increasing linearly with time t as bt. the particle starts from origin with initial velocity u. the distance travelled by the particle in time t will be: a) ut+(1/3)bt 2 b) ut+(1/2)bt 2 c) ut+(1/6)bt 3 d) ut+(1/3)bt 3 | askiitians.com | 2021.25 | [
{
"text": "dear abhingya d 2 s/dt 2 =bt intigrate v= ds/dt = bt 2 /2 +c at t=0 v=u so u =0 +c ds/dt = bt 2 /2 +u furthet intigrate s= b/6 t 3 +ut +d at t=0 s=0 so d=0 s =b/6 t 3 +ut 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": "we have to assume acceration =0 when t=0. so we have the equation: a = bt since a = dv/dt dv/dt = bt integrating gives: v = (b/2)t² + c when t=0, v = u, so c = u v = (b/2)t² + usince v = ds/dt ds/dt = (b/2)t² + uintegrating gives: s = (b/6)t³ + u.t + k when t=0, s=0, so k=0 s= (b/6)t³ + u.t",
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098136088b4dd95569ac6d9193696744 | if n is an integer between 0 and 21 ,then the minimum value of n!(21-n)! is \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ | askiitians.com | 2021.31 | [
{
"text": "dear aatish agarwal, multiply and divide n!(21-n)! by 21!, you get n!(21-n)! = 21!/21 c n so,minimum value of the given term is same as maximum of 21 c n we know the max of n c r is for r = n-1/2 if n is odd therefore for n= 10 or 11 {both same value}, 21 c n is maximum ,hence given term is minimum thanks all the best plzzz approve my answer if you like it",
"name": "",
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},
{
"text": "since minimum value of n!(21-n)! is the maximum value of 21cn (=21!/n!(21-n)!), therefore it is equal to 10!(21-10)! or 11!(21-11)!, i.e. 11!10!.",
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}
] |
|
364c93e4f99d0e3889c810af0b27e677 | does the temperature of a body depend on the frame from which it is observed? | askiitians.com | 2021.39 | [
{
"text": "no temperature is invariant of frame of referance thanks & regards mukesh sharma askiitians faculty",
"name": "",
"is_accepted": false
},
{
"text": "no because temperature is a absolute quantity",
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}
] |
|
cc153034399f9ee1172671620430bf7a | why scra enginner course is done in bihar with limited seat.as i know that there are many class for engineering in same college but scra has limites seat i.e. 10 to 50. it means only one class is going on | askiitians.com | 2021.25 | [
{
"text": "hi there is no particular reason to do this in bihar, but seats are limited because the demand is less and they are only looking for best of the brains] regards",
"name": "",
"is_accepted": false
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] |
|
a54503c7156765ac944190e3ab71125b | explain the two types of x rays | askiitians.com | 2021.31 | [
{
"text": "dear rajan the two types of radiation are usually distinguished by their origin: x-rays are emitted by electrons outside the nucleus, while gamma rays are emitted by the nucleus. 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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0baa1469d82d4eb208541564f554d5aa | why anterior fontanelle is used in judging hydration of infants???? and also mention other fontanelles uses.. | askiitians.com | 2021.25 | [
{
"text": "dear student the average size of the anterior fontanel is 2.1 cm, and the median time of closure is 13.8 months. the most common causes of a large anterior fontanel or delayed fontanel closure are achondroplasia, hypothyroidism, down syndrome, increased intracranial pressure, and rickets. a bulging anterior fontanel can be a result of increased intracranial pressure or intracranial and extracranial tumors, and a sunken fontanel usually is a sign of dehydration. a physical examination helps the physician determine which imaging modality, such as plain films, ultrasonography, computed tomographic scan, or magnetic resonance imaging, to use for diagnosis sunken fontanelles may be a sign of dehydration. bulging fontanelles can be a symptom of a serious illness, such meningitis.",
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|
85494d806cb41c72c4216bdf3aaa98ee | find the domain of the function y = f (x) given by ax + ay = a, when
(i) 0 1. | askiitians.com | 2021.21 | [
{
"text": "the domain of the function you have written does not depend on value of a since it is a polynomail function. hence its domain is r. i'm attaching answer according to the expression ax +ay = a. thanks & regards sudhir, askiitians faculty qualification. iit delhi",
"name": "",
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},
{
"text": "since a not equal to 0 we can divide a from both side. remaining is linear equation which has domain r. in both part ans is same. i'm attaching the solution. thanks & regards sudhir, askiitians faculty qualification. iit delhi",
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|
3bbf28b447a461a62e307b64e14acdd3 | name the following: tissue that forms the inner lining of our mouth. | askiitians.com | 2021.25 | [
{
"text": "dear student squamous epitheliumis the tissue thatforms the inner lining of our mouth. thanks",
"name": "",
"is_accepted": false
},
{
"text": "dear student, the tissue that forms the inner lining of our mouth is epithilial ttissue. specifically, squamous epithelium. hope it helps! thank you ✌️",
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}
] |
|
1ce801bc2caa6122ea25edd507e130ae | cant understand how to approach solution of questions. if after attempting question i dont get answer in one or two attempt i just see the solution and move on to another problem but this doesnt help as i forgot the solution in few days. | askiitians.com | 2021.31 | [
{
"text": "dear paras, first of all .. try the question in every possible way.. and if you don succed and check the answer and observe where u were mistaken .. then clear the concept and then try again similar problems .. you surely will not forget after all this.. revision is must during the preparation .. keep revising the stuff after a time gap, it helps in remembering for long times.. 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. good luck ! win exciting gifts by answering the questions on discussion forum.. regards vijay luxmi",
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|
e71506e75a641316fc27d9322cdf7bd8 | i secured 21600 air in aieee ( general). which colleges can i get in mech or civil. should i drop or not ? | askiitians.com | 2021.21 | [
{
"text": "it depends witch state(province)you are from.....try to get maximum advantage of your state quota to get mech in your state nit dont consider dropping as an option as you ill surely get into some nice college. if you want to try again you can prepare for iit-jee and aieee while your first year since there is no academic burden in engineering colleges.many of my friends got tru iit-jee the same way",
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] |
|
4a8f8f481d63d2568169f0d160b825e5 | i belong to obc category and i scored 139 in jee mains. i belong to delhi. will i get comp science at dtu? boards % 90. | askiitians.com | 2021.25 | [
{
"text": "dtu is under top 12, you would be consider under 85% reservation, you may get the college but not a strong chance of cs... hope for the best",
"name": "",
"is_accepted": false
},
{
"text": "both the scores are better but before taking any assumptions it is wise to check out the requisite formalities of dtu, why don’t you check out the website of dtu and find out the relevant details...for information of other equivalent institutions of esteem and reputation, i recommend the following names, rest is up to you to look into the websites of these institutions to get to know them better – cochin uni. of sci and tech. ernakulam lovely professional university, phagwara, punjab abv indian inst. of it and mgmt., gwalior bhilai inst. of tech. durg",
"name": "",
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|
973a836484fa5c7ed4cc4eb772a0069d | sir,i belong to gen cat. main my score is 288.cbse 96.4%. what is my expected air & state rank.tks,shiv | askiitians.com | 2021.43 | [
{
"text": "well done shiva your expected jee main rank is 200-500. you can get any seat of your choice in any nit!",
"name": "",
"is_accepted": false
},
{
"text": "if you like cs, please go to iiit hyderabad. also consider the nits, bits pilani and old iits. best of luck.",
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] |
|
204e7f5a8d7d9077fbc42c5254476849 | cyanobacteria are classified into cyanophyceae and myxophyceae on the basis of(1) presence or absence of cyanophycean granules(2) type of â granule(3) both (1) and (2) (4) none of these | askiitians.com | 2021.31 | [
{
"text": "cyanophyceae and myxophyceae is same thing",
"name": "",
"is_accepted": false
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] |
|
323e651aa130679861d3b7eb60df3403 | if the 12th term of an arithmetic progression is seven times the 2nd term and the 8th term is three more than ten times of the first term. if the first term and common ratio of an geometric progression is equal to first term and common difference of the arithmetic progression respectively, then find the 5th term of the geometric progression. | askiitians.com | 2021.31 | [
{
"text": "let the first term of the ap be a and the common difference be dnow ,atqa+11d=7(a+d)=>6a=4d=>a=2/3dagain we havea+7d=10*a +3on putting a=2/3d and solving we get d=3 so a=2as first term of the ap is equal to the first term of the gp and common difference of the ap is equal to the common ratio of the gp so we have,a=2 and r=3now 5th term of the gp=ar^4=2*3^4=2*81=162therefore the fifth term of the ap is 162.",
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913fcabf76898c274fcb7d38ae3b5dde | what are iso diaphers | askiitians.com | 2021.31 | [
{
"text": "we know that isodiaphers have same difference in neutrons and protons, but i encountered another definition: atoms which have same isotopic axis, they are called isodiaphers .",
"name": "",
"is_accepted": false
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{
"text": "atoms having same isotopic number are called isodiaphers. mathematically, isotopic number (isotopic excess) = (n — z) or (a — 2z) where, n = no. of neutrons; z = no. of protons for example 92 u 235 and 90 th 231 approve if useful",
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{
"text": "in nuclear chemistry, isodiapher refers to nuclides which have different atomic numbers and mass numbers but the same difference between the number of neutrons (neutron number) and protons or electrons (proton number). plz aprve",
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29a7995f2e7dcc48a6b2c6c7b76c5cd3 | would the pattern of iit jee 2011 question paper change? | askiitians.com | 2021.43 | [
{
"text": "dear akash, till now there is no announcement for that .. so most probably the pattern will be same for the iit jee question paper.. 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. 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. regards vijay luxmi",
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f77f49fdb3beadf1407b9eaed3f6f7a9 | how to apply de morgan law`s in mathematical reasoning | askiitians.com | 2021.43 | [
{
"text": "dear student please visit the following links https://www.askiitians.com/iit-jee-algebra/set-relations-functions/set-theory/complement-of-a-set/ https://www.askiitians.com/iit-jee-algebra/set-relations-functions/set-theory/practical-problems-on-union-and-intersection-of-two-sets/ regards",
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fd693662a8bea2d7edaa1f5b130cba90 | i got 16000 rank in jee mains exam 2019. which best nit or iiit college can i get on the above rank? | askiitians.com | 2021.31 | [
{
"text": "dear student yo u can get some good iiits or nits . please check previous yearcutoff for colleges. it will help you. regards arun",
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] |
|
b5ef01d2dc132d6aed5460b15f2ae708 | prove that sin 2 8+sin 2 16+sin 2 24+sin 2 48=1- sin 2 6 - sin 2 12 | askiitians.com | 2021.25 | [
{
"text": "hi , the equality is wrong, the lhs is not equal to rhs. assuming you take the angles in degrees. regards, rajat askiitian expert",
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2853bc9fcdb7b7d08dcf0f0b9b321905 | plz explain the faraday's law of induction | askiitians.com | 2021.31 | [
{
"text": "electromagnetic induction was discovered by michael faraday in 1831, and, independently and at the same time, by joseph henry. the above law is sometimes also stated as - the emf generated is proportional to the rate at which flux is linked. faraday formulated the law quantitatively in the form: where is the electromotive force (emf) in volts φb is the magnetic flux through the circuit (in webers).",
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7b7af80719b0c3ea285077ad24408dc5 | i dont have any inclination towards any branch then what should itake cse ism dhanbad or metallurgy in iit roorkee | askiitians.com | 2021.21 | [
{
"text": "depends on your",
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|
90ffdfecf105ec0d07c5fa657778a3d5 | hi i got a rank of pd36. cn u plz guide which iit is good for electronics nd mechanical. will i get seat there. where should i opt for this branches? reply in detail plz. thanq. | askiitians.com | 2021.39 | [
{
"text": "dear student, electrical is best in iitd and iitk. mechanical is best in iitd.... 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 sagar singh b.tech, iit delhi",
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|
51dfb279c8098c7820d0961eab5b41fd | how can i apply for bit patna | askiitians.com | 2021.21 | [
{
"text": "the admission to be and b. arch programmes at bit patna would be done through institutional counselling based on the all india ranks secured by candidates in jee (main) 2014 examination conducted by cbse in association with ministry of hrd, govt of india. the students who get a valid rank in jee main 2014 and are eligible forcsab counsellingcan apply for institutional counselling conducted by bit for admission to bit patna, deoghar and jaipur. please see the detailedeligibility criteria. those candidates who are allotted a seat via online counselling are called upon institute/campus to complete further admission formalities. also see thedetailed fee structureof bit patna. bit patna offers following undergraduate engineering programmes. bachelor of engineering (b.e.) in civil engineering bachelor of engineering (b.e.) in computer science & engineering bachelor of engineering (b.e.) in electrical & electronics engineering bachelor of engineering (b.e.) in electronics & communication engineering bachelor of engineering (b.e.) in information technology bachelor of engineering (b.e.) in mechanical engineering bachelor of engineering (b.e.) in production engineering bachelor of architecture (b. arch) bit patna offers 300 seats for be and 40 seats for architecture. for details, please see theseat matrix of bit patna. the admission shall be through a separate online counselling organized by bit on the basis of all india rank (air) of a candidate in jee main 2014. there is a separate fee of rs. 2500 charged by bit for institutional counselling and anyone who has avalid jee (main)rankcan apply.",
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0b00882e2d4053a88da5b20a7f03317b | ellipse. the line passing thru the extremity a of the major axis and extremity b of the minor axis of ellipse x2+9y2=9 meet its auxiliary circle at the point m.then the area of the triangle with vertices at a,m and origin. | askiitians.com | 2021.21 | [
{
"text": "dear nirbhay, the ellipse: equation of an ellipse, eccentricity, focus, major and minor axis, chords and latus rectum: the ellipse is the locus of a point in a plane such that the ratio of distance of that point from a fixed point, focus, to the ratio of the distance of that point from a fixed line, the directrix, is constant and is always less than one. the ratio is called eccentricity, denoted by e. the equation ax 2 +2hxy+by 2 +2gx+2fy+c=0 denotes an ellipse when abc+2fgh-af 2 -bg 2 -ch 2 ≠0 and h 2 -ab<0. every ellipse has two axis, major and minor. the major axis is perpendicular to directrix and passes through the focus. also, there are two ‘focus’ in an ellipse, and hence two ‘directrix’, one corresponding to each. every point’s distance from each focus to the point’s distance from the corresponding directrix is in a constant ratio e. the minor axis is parallel to the directrix and bisects the line joining the two foci. the point where major and minor axis meet is called the center of ellipse. 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. http://www.askiitians.com/packages/packages.aspx so start the brain storming…. become a leader with elite expert league askiitians thanks aman bansal askiitian expert",
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e53afce17aee07133660dec91b9dc767 | sir,my air 92851 and obc category rank 22541,whwt my chances in any nit | askiitians.com | 2021.21 | [
{
"text": "dear binoy, with your rank its almost difficult to get the admission in nits .. but you can try for some private decent collage.. you can get some idea by checking the opening and closing ranks of nits in the link gievn below.. click the given link for opening and closing rank aieee http://www.askiitians.com/aieee/aieee-counselling please click the link for aieee cut off : http://www.askiitians.com/aieee-2010/aieee-2010-cut-offs.aspx please feel free to post as many doubts on our disucssion 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 vijay luxmi",
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}
] |
|
b44c99b778b3e6c1b75ec8d73b23d348 | which of the following species is less reactive than benzene towards ring substitution reactions? (a) chlorobenzene (b) bromobenzene (c) nitrobenzene (d) aniline | askiitians.com | 2021.21 | [
{
"text": "ring substitutionis electrophilic in nature. in nitrobenzene the (−no 2 ) group deactivates the ring and decreases its reactivity towards the electrophilic attack.",
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] |
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ab070f1beb8f09d51c02d8855d71a2c7 | which of the following is not a member of the solar system. (a) an asteriod (b) a satellite (c) a constellation (d) a cornet. | askiitians.com | 2021.43 | [
{
"text": "dear student option (c)is correct here. thanks",
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}
] |
|
af4938ca0239ada1b3ebc3a17d0b6b77 | what is the cut off marks for sc students this time | askiitians.com | 2021.25 | [
{
"text": "last time it was around 90. this time it may rise. check this site http://123iitjee.com/course/view.php?id=13",
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] |
|
4c674c37b27da956e713b79374140e2b | explain any one process by which the amino group is protected and is regenerated at the end of peptide formation. | askiitians.com | 2021.31 | [
{
"text": "by doing acetylation of the group the reactivity of amino group is controlled and at the end of the reaction, it is agin generated. the former process is called protection of the group whereas removing the group at the end of the reaction, is called deprotection of the group. please follow any text book to study it in detail.",
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] |
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1d6ad993fc7faae5aa9f400ec0833328 | in limits concept why lim h approaches 0 (cosh-1)/h equal to one.explain | askiitians.com | 2021.43 | [
{
"text": "lim h--> cosh – 1 / h^2 = ½ lim h--> (cosh-1)/h lim h--> (cosh – 1 / h^2 )* h = ½ * 0 = 0",
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] |
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96542d9b0fe1adf9c41ada9a1516c3f6 | in mot , what do we mean by non-bonding orbitals? for example : for o 2 , 1s orbitals are considered non-bonding and the four electrons present in sigma1s and sigma * 1s orbitals are ignored. what does this mean?? | askiitians.com | 2021.39 | [
{
"text": "hey student.. the non bonding orbitals you are referring to basically mean that these are those orbitals which do not take part in the bonding during the bond formation. as such you can see, the sigma and sigma* electrons cancel or balance out each other so they will not be available for the bond formation.",
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}
] |
|
e470c2f7976b9b6de1781a875ac4d462 | what is the order in chemical kinetics? | askiitians.com | 2021.21 | [
{
"text": "the some of powers of concentration terms in rate law.",
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},
{
"text": "sum of power of the concentration terms in the rate law is known as oreder of the reaction its value may be integer ,zero also fraction.it can be determined experimentally",
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}
] |
|
f5b4a6eb75e7d5f3ef80f07a00e79b51 | my b.arch aieee air(gen) is 6566 and state(wb) is 305??????will i get ne nit or bit mesra>>>??? | askiitians.com | 2021.39 | [
{
"text": "dear abhiroop your rank is good enough to fetch you some branch of your choice at some of the good nits. refer the link : - www.askiitians.com/aieee-counselling/aieee-engineering-counsellings.aspx regarding bit meshra, except the computer science and electrical you could get anything of your choice there. it would be the best option to pursue as a career. thank you.",
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] |
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111b2f3c9f2d9ce7c0f5ca9b6efaf830 | a 4.5 cm needle is placed 12 cm away from a convex mirror of focal length 15 cm. give the location of the image and the magnification. describe what happens as the needle is moved farther from the mirror. | askiitians.com | 2021.21 | [
{
"text": "object size , h1 = 4.5 cm object distance, u = –12 cm focal length, f = + 15 cm image distance , v = ? magnification, m = ? as. 1/u + 1/v = 1/f 1/v = 1/f – 1/u now, putting u = –12 cm and f = +15cm , we get 1/v = 1/15 - 1/-12 = 4+5/60 = 9/60 v = 60/9 = 6.7 cm ✴image is formed 6.7 cm behind the convex mirror. it must be virtual and erect. if h2 is size of image , then m = h2/h1 = -v/u or, m = h2/h1 = –(6.7)/–12 = 0.558 h2 = 0.558 h1 = 0.558 * 4.5 = 2.5 cm",
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}
] |
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2096d14a1d34ada5d49a9c0e212de5ff | find the angle subtended at the origion by the line segment whose end points are (0,100)and (10,0) rd sharma page 9.15 ques no 22 | askiitians.com | 2021.21 | [
{
"text": "dear yashashvi, leta is (0,100) & b is (10,0) =>oa(sector on x-axis) = 100 =>ob(sector on y-axis) = 10 =>tanbao = 10/100 = 0.1 = tan 5.75* =>anglebao = 5.75* =>angleabo = (90*-5.75*) = 84.25 best of luck plz approve the answer...!!!! 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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] |
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243c05267244df080b340e3cfb4c19a0 | rank the colleges according to preference for joining them: 1. vit , vellore 2. psg, coimbatore 3. anna university 4. hbti, kanpur 5. bit, mesra | askiitians.com | 2021.31 | [
{
"text": "3",
"name": "",
"is_accepted": false
}
] |
|
b0b3b2d87162ba2783781ca980fa5b5d | sir my obc rank is 85680 in jee main i have registered fo josaa counsiling can i get some nit ….can i get nit srinagr or nit uttrakhand | askiitians.com | 2021.21 | [
{
"text": "dear student, your category rank is too low. you may have to wait upto 4 th round or spot round for getting any nits. thanks.",
"name": "",
"is_accepted": false
}
] |
|
bf9e6ee697d7159e7b1810532b6184a7 | match the items given in column i with those in column ii: column i column ii chlorophyll bacteria nitrogen heterotrophs amarbel pitcher plant animals leaf insects parasite | askiitians.com | 2021.31 | [
{
"text": "chlorophyll to leaf\nnitrogen to bacteria\namarbel to parasite\nanimals to heterotrophs\ninsects to pitcher plant",
"name": "",
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}
] |
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2d1d08a096597f13f6b4cbbd4b06a819 | relation between wavelength, refractive index and minimum devistion | askiitians.com | 2021.43 | [
{
"text": "min deviation = (c/f*walenght -1)a.hope it clears. if u have doubts then please clearify. and if u like my answer then please approve answer.",
"name": "",
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}
] |
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6315b75ecd5539c16d5e23b3a62a399c | (x-7)/3 = (x-1)/5 (x-7)/3 = (x-1)/5(x-7)/3 = (x-1)/5(x-7)/3 = (x-1)/5(x-7)/3 = (x-1)/5 | askiitians.com | 2021.39 | [
{
"text": "dear student (x-7)/3 = (x-1)/5 5(x-7) = 3(x-1) 5x – 35 = 3x – 3 5x – 3x = -3 + 35 2x = 32 x = 16 thanks",
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}
] |
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6056b3d8eb2c437d209e126ba0288629 | i want to know the weightage of chapters of all the three subjects physics, chemistry, mathematics for the iit-jee paper | askiitians.com | 2021.39 | [
{
"text": "you should focus on limited topics chemistry physical chemistry : 30-35% organic chemistry : 25-30% inorganic 30-35% maths algebra: 30-35% calculus 30-35 % vector 25-30% physics mechanics 25-30 % properties of matter 10-15% sher mohammad askiitians faculty b.tech, iit delhi",
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] |
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ea3c914cb7b30605a8c260cfd5afa254 | what is all silver tea cups means?w is the simple method to understand it? | askiitians.com | 2021.21 | [
{
"text": "@ badugu all silver tea cups is a shortcut forms to learn the triginometry signs and convention in diffrent quadrant . that means all sin tan and cos . that means in frst quadrant all the ratio are +ve and in 2 nd quadrant only sin are +ve , and in 3 rd quadrant tan is +ve and in 4 th quadrant cos is +ve . remember cos is +ve means the complimentary ratio is also +ve . hope it clears all the best",
"name": "",
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},
{
"text": "it is a simple formula which is useful to know the trigonometric ratios, and their values. it explains the behavier of trigonometric ratios in coordinate plane.",
"name": "",
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},
{
"text": "that means all sin tan and cos . that means in frst quadrant all the ratio are +ve and in 2 nd quadrant only sin are +ve , and in 3 rd quadrant tan is +ve and in 4 th quadrant cos is +ve . remember cos is +ve means the complimentary ratio is also +ve .",
"name": "",
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},
{
"text": "t is a simple formula which is useful to know the trigonometric ratios, and their values. it explains the behavier of trigonometric ratios in coordinate plane.",
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}
] |
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ddc2118e95d611fbde3b7bfe17128b54 | a metal cube us placed in an empty vessel.when water is filled in the vessel so that the cube is completely immersed in water,the force on the bottom of the vessel in contact with the cube a. will increase b. will decrease c. will remain the same d. will become zero | askiitians.com | 2021.39 | [
{
"text": "there is no buoyant force on the bottom face of the cube, because there is no water under it, due to which archimedes principle does not hold. therefore, answer is: force will increase",
"name": "",
"is_accepted": false
},
{
"text": "as there is no lateral pressure normal force is absent between surface and water there fore c will be the ans",
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}
] |
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06cc1475b36486be6fc34225ca1ae9e4 | 59. \_\_\_\_\_\_\_\_\_\_ is the commercial unit of electrical energy. | askiitians.com | 2021.31 | [
{
"text": "answer: explanation: kilowatt hour",
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}
] |
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1c0758bd49a7275d1335a15882c6fce0 | a charged 50 micro faraday is connected to a50 mh inductor . what is the angular frequency of free oscillation of the circuit? | askiitians.com | 2021.21 | [
{
"text": "angular frequency for the free oscillation of an ac circuit is given by w(omega) = 1/√(lc)= 1/(50×10 -6 ×50×10 -3 ) 1/2 = 1/(25×10 -7 ) 1/2 =632.455",
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}
] |
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8f2103d9f83426408876a8c8d1ce6910 | find the percentage increase in the area of a triangle if its each side is doubled | askiitians.com | 2021.39 | [
{
"text": "hello student, please find the answer to your question below heron's formula states for a triangle with sides of lengths a,b,c a = where s = (a+b+c)/2 if you double the sides a 1 = = 4* = 4*a the percentage increase in area is 4*a-a = 3*a so the answer is 300%",
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}
] |
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31dc91f8b3325bc7301b05d5d1223bc3 | find the equation of the line passing through the intersection of the lines 3x-4y+1=0 and 5x+y-1=0 and cutting off equal intercepts on the coordinate axes | askiitians.com | 2021.21 | [
{
"text": "hii the equation of the line that you intend to find out will be of the form x+y =c . find out the point of intersection of the two given lines and you will get the answer. there can be multiple answers to this question that can be found out using |x|+|y| =c",
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}
] |
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1d7f9762ae5a78eed459b015739b0042 | as aboue | askiitians.com | 2021.39 | [
{
"text": "1. photochemical reactions do not take place in dark but take place in the presence of light by absorbing it. 2. since different colored radiations in the range of visible light have different frequencies and hence different energies , therefore all radiations may not be able to initiate a particular reaction. for example, a photon of violet light has highest frequency and hence the highest energy. hence a reaction which is initiated by violet light may not be initiated by other colored radiations 0of visible light. on the other hand, a photon of red light has lowest frequency and energy. therefore a reaction that can be initiated by all other radiations as well. 3. temperature has very little effect on the rate of a photochemical reaction. instead, the intensity of light has marked effect on the rate of photochemical reaction. 4. the free energy change of a photochemical reaction may not be negative. 5. there are many substances which do not react directly when exposed to light. however, if another substance is added , the photochemical reaction starts. example:- photosynthesis,etc.",
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] |
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60fee0dc14639fdbf25a5a1416f59883 | hello sir/maam i am getting 202 marks in jee this year. can i get any branch of iit-delhi? | askiitians.com | 2021.21 | [
{
"text": "dear your pridicted rank is 5000 -5500. and as compared to the last year's cutoff this year this has been predited that the cutoffs will be lowered, as the difficulty level of the paper is slightly increased however score may vary and as a result rank may also vary, a slight difference may create lots of difference in rank. for further details you can visit the following: http://www.askiitians.com/iit-jee-2010-cut-offs.aspx http://www.askiitians.com/iits-2009-2010-opening-and-closing-rank.aspx 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",
"name": "",
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}
] |
|
49695b2abfd512d05dd298053bd0595b | formula of stable halide which may be formed by an element of atomic number 114 will be? ? | askiitians.com | 2021.21 | [
{
"text": "element of atomic number 114 is known asununquadium. it belongs to group 4 of the periodic table.the group 4 element form two stable halide +2 and+ 4.thwe stability of +2 hlide increases and tht of +4 halide increases.therefore it is expectd to form +2 halide which is stable thanks and regards sunil kumar askiitian faculty",
"name": "",
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}
] |
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13f94d1fdd2ac24c9ef187f906e760ec | if 8 c are deviated from calvin cycle in photorespiration then what is the total c loss at the end of reaction1.100%2.75%3.25%4.0% | askiitians.com | 2021.39 | [
{
"text": "hiiii pramila 8c are deviated from calvin cycle in photo respiration , the total c loss at the end of reaction is 8*6 = 48 % so, ans would be 48%",
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}
] |
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8d4a484cfb210f3d9a7210cdad47cac9 | which is d best book for mechanics starting from basic to advanced | askiitians.com | 2021.21 | [
{
"text": "dear gunjan harjal resnick halliday is the best book for mechanics,specially the latest edition (9th edition) . 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",
"name": "",
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}
] |
|
f5b8153ab0c57254f35aff4d381d8e3b | is abducens purely motor nerve or sensory and motor nerve both? urgent reply needed. | askiitians.com | 2021.21 | [
{
"text": "hello student it is purely motor",
"name": "",
"is_accepted": false
}
] |
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5f5427cf0f4a22b868ca9dbadb14eea1 | good evening sir. how did you expect f0>256 and f0 that's my doubt explain sir. | askiitians.com | 2021.31 | [
{
"text": "dear raju please attach the question also. i will be happy to help you. regards arun (askiitians forum expert)",
"name": "",
"is_accepted": false
}
] |
|
dd058e50b7b0594907c6be22070d8242 | 21. lipid molecules in the cell are sythesized by : (a) smooth endoplasmic reticulum (b) rough endoplasmic reticulum (c) golgi apparatus (d) plastids | askiitians.com | 2021.43 | [
{
"text": "ans : (a) smooth endoplasmic reticulum",
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}
] |
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9f92b9ccefde02ef43624c888c695875 | i am in class 11. i have joined coaching classes and i have got 323 rank(air) in unified council exam(nstse). but my parents told that this is not sufficient for clearing jee with good rank.now when i study i could not concentrate i am feared whether i would clear jee or not .please help. class 11 is almost over for me.if i work very very...............hard now will i be able to get air-1 in jee. please help and be honest | askiitians.com | 2021.21 | [
{
"text": "dear mr. anurag; this is a really very tough question. this is good that you are a above average student. your rank is good in nstse. but this rank will not give any help in iitjee , this is a another real time war so you will be 100% active till that exam. anyperson can get a good rank but for that your basic funda must be 100% clear. you must be equal confidence in all three subject.means every chapter must be your favurite chpater. one more things somewhere this thing also depends on your faculty quality. is he/she providing 100% correct concept specilly in organic chemistry. so work hard. rank one is possible in one year study. 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 pramod kumar iitr alumni",
"name": "",
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}
] |
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48a9d14129c6ebdde0c2940f0e8994e1 | i am applicant of iitjee2010,if i had not scored 60% in my qe last year and if i am reappearing this year which option should i fill in the application. | askiitians.com | 2021.31 | [
{
"text": "dear vijay kumar if you belong to general catagory and if you will fill less than 60 % marks in 10+2 ,then you will not be considered as eligible condidate. your application form will be rejected. and if you r reappering in 10+2 then you should fill the form as 12 appearing candidate. 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",
"name": "",
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}
] |
|
7ed648d8a22128057b04a480b82617a4 | can’t we find the equation of parabola when a tangent is drawn to the parabola | askiitians.com | 2021.25 | [
{
"text": "we find the equation of parabola , if we know the point at which the tangent touches the parabola and the slope of the tangent.",
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}
] |
|
9fa0c33c496082cdf14c78f808308a73 | what is critical temperature ? please answer this quickly . | askiitians.com | 2021.39 | [
{
"text": "in thermodynamics, a critical point is the end point of a phase equilibrium curve. the most prominent example is the liquid–vapor critical point, the end point of the pressure–temperature curve that designates conditions under which a liquid and its vapor can coexist.",
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"is_accepted": false
},
{
"text": "also, the temperature of a gas in its critical state, above which it cannot be liquefied by pressure alone.",
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}
] |
|
9a47bf615842b16d827804ef77333e0f | <p>how to calucalate the co-ordination number in given compond with an example ?</p> | askiitians.com | 2021.39 | [
{
"text": "for calculation of co-ordination number see this example ex1) [nicl 4] --- there are four ligands present & each is monodentate ligand so its coordination number is 4*1=4 2) [fecl 2( h 2 o) 4] ----in this example total 4 + 2 ligands are present & all are monodentate so its coordination number is 6 3) [ni(oxalato) 2] ---- in this two didentate ligands are present & so its coordination number is 2*2 =4",
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] |
|
aeeed2fba6ac1febae3308c5b542ad0c | what is the time period of object to displace from mean position to half displacement position? | askiitians.com | 2021.43 | [
{
"text": "as x =xm/2 so using the equation x =xm sinθt .putting the value of x then xm/2=xm sinθt .simplyfy the. equation 1/2=sinθt so (1/2 )sin inverse =θt. next pi/6 or 30 degree =θt where θ=wt and w=2pi/t so pi/6 =2pi/t (t) simplifying the equatin we obtain the ans t =t/12",
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] |
|
187f124d549b0e6d3df9b67ec1bcda0b | sir,will i get previous years question papers of jipmer?? | askiitians.com | 2021.25 | [
{
"text": "its available in a book of arihant publication, pls go for this,,",
"name": "",
"is_accepted": false
}
] |
|
9ed668529615aee789c28cb5029fb32f | an object that has no element of symmetry is called what? a) tetrahedral b) achiral c) symmetric d) asymmetric | askiitians.com | 2021.31 | [
{
"text": "ans : (d) thanks & regards\nakshay meena, askiitians faculty\nm.tech, iit kharagpur",
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"text": "d",
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|
9bbd97a893dcf73a4a3ed91a18a0bed2 | pv=nrt..... kinetic theory of gases problem................. | askiitians.com | 2021.39 | [
{
"text": "initial pressure = p volume = v let the initial temperature be t p v = n r t stroke volume of the pump = v (let v assuming an isothermal process: after the pumping out gas of volume v out of v, the number of moles of the given gas left in the container = n *(v-v)/v as volume v of the container is constant, p1 = p * (v-v)/v = p (1 - v/v) again when gas is pumped out pressure will become p2 = p1 * (1 - v/v) = p (1- v/v)² after n pumpings, pressure inside the container = p (1 - v/v)ⁿ",
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29cf887485256e47fd7936ea2848a881 | x(1+y) 1/2 +y(1+x) 1/2 and x is not equal to y, then dy/dx = ??? | askiitians.com | 2021.31 | [
{
"text": "dear student x * ½ (1 + y)^-1/2 y’ + (1 + y)^1/2 + y * ½ (1 + x)^-1/2 + (1 + x)^1/2 * y’ = 0 on simplifying you get y’ = dy/dx = 1 / (x + 1) 2",
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] |
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810b18ea2ee862b5d30e9b3bb5f74e24 | lim xpowerx xtend0 | askiitians.com | 2021.43 | [
{
"text": "dear ajit pal y= lt x→o x x log y = lt x→o xlog x = lt x→o (log x)/(1/x) = lt x→o (1/ x)/(-1/x 2 ) = lt x→o (- x) =0 y=e 0 y=1 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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{
"text": "lim x^x x -> 0 i'm not sure this limit exists unless the limit is one-sided. i'll assume it to be one-sided. lim x^x x -> 0+ use the property y = e^(ln(y)). since e and natural log are inverses of each other, they cancel each other out. lim e^(ln(x^x)) x -> 0+ use the log property to move the x outside of the log. lim e^[x ln(x)] x -> 0+ move the limit inside of the exponent. e^[ lim (x ln(x)) ] . . x -> 0+ now the limit is of the form [0*infinity], which is indeterminate. let's move x to the denominator as (1/x). e^[ lim ( ln(x)/(1/x) ) ] . . x -> 0+ how the form is [infinity/infinity]. use l'hospital's rule. the derivative of ln(x) is (1/x). the derivative of (1/x) is (-1/x^2). e^[ lim ( (1/x)/(-1/x^2) ) ] . . x -> 0+ simplify. e^[ lim ( (-x^2)/x ] . . x -> 0+ e^[ lim (-x ) ]. . x -> 0+ and evaluate the limit e^0 which is just 1 -- regards ramesh",
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104a0610a63020bc1452a3edcf7e55c4 | why dipole is used.can u send me the accurate definition of this.if we don't use dipole then what will happen | askiitians.com | 2021.25 | [
{
"text": "3consider a pair of charges a small distance apart ( is the vector joining the negative charge to the positive charge and is illustrated in figure 3.5 such that we can define figure 3.5: a pair of opposite charges are a distance apart. a dipole is formed by letting . (3.14) which is called the dipole moment . the resulting dipole potential is if we assume that tends to zero, we may expand the second term in a taylor series for small . thus, we obtain hence, (3.15) the resulting electric field components are given by evaluating in spherical coordinates. hence (3.16) thus, falls off in magnitude like and vanishes when . the electric field for a dipole is shown in figure 3.6 . figure 3.6: the electric field lines for an electric dipole. electric dipoles are very important . they exist everywhere around us . the presence of electric dipoles in molecules affect their chemical and physical behaviour . they also find use in antennas.",
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] |
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6ac56755cc6883c98e906a6e2650c9cd | in 4abc, altitude ad = 24, inradius of 4abd = 3 and inradius of 4acd = 6. find bc. | askiitians.com | 2021.43 | [
{
"text": "dear ajinkya tanb = ad/bd = 24/bd tanb/2 = r1/(bd-r1) tanb = 2tanb/2 /( 1 - tan 2 b/2) 24/bd = 2 {r1/(bd-r1)}/ 1- { r1/(bd-r1)} 2 bd = (24r1 -r1 2 )/(12-r1) r1 =3 bd = 7 similerly cd = 18 bc = 7+18 = 25 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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27d7a54066b1658ce93ae8be0a1d5bde | what is spermatogenesis and what are the stages involved in spermatogenesis? | askiitians.com | 2021.21 | [
{
"text": "dear student spermatogenesis:the process by which stem cells develop into mature spermatozoa. there are three phases: (1) spermatocytogenesis (mitosis), (2) meiosis, and (3) spermiogenesis. thanks",
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] |
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ecaf34ed61e5090e60af6b17c90783a0 | let abcdef be a regular hexagon.if ad=xbc and cf=yab, then xy= ? | askiitians.com | 2021.31 | [
{
"text": "given ab =a bc =b here a and b are vector ef=-b de=-a and we know that ad=2bc =2b ad=ab+bc+cd 2b =a+b+cd cd =b-a and fa=-cd =a-b ac=ab+bc =a+b af=cd=b-a and cf=2de =-2a",
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}
] |
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531081e0d1f1d2b95fb2a2a583bb0d15 | can you please give me detailed account of physical properties of all groups in p- block and s- block | askiitians.com | 2021.21 | [
{
"text": "all alkali metals have one electron in the s-sub shell. due to the presence of only one electron in the outermost shell, they are highly reactive so as to obtain an octet configuration. due to the presence of similar electronic configuration, all the elements show similarity in their properties. physical state: all the elements exist as silvery white, soft and light metals. these are considered as metals due to very low ionisation energies. these elements are malleable i.e. can be compressed into sheets and are also ductile i.e. they can be drawn in to wires. they are lustrous when freshly cut. but, the lustre tarnishes very easily upon exposure to air. atomic radius: as we know alkali metals are the largest elements of the corresponding periods. atomic radius increases from lithium to francium as we move down the period. density: density increases as we move from li to fr. but, an anomaly exists in case of sodium and potassium where k is lighter than na. li is the lightest metal among all the metals. li, na and k are lighter when compared to water. melting and boiling points: due to the presence of large atomic radius, all these elements bond very weakly at the time of forming crystals. due to weak inter-atomic bonding, all these elements have very low melting and boiling points. the melting and boiling points decrease as we move down from li to cs. ionisation energy: due to less attraction of the nucleus on the outer most electrons, the outermost electron of all these elements can be very easily removed. hence, these elements have very low ionisation energy. it decreases as we move down the group from li to cs. electropositive character: due to low ionisation energy, alkali elements lose the electrons very easily. hence, they can be said as strongly electropositive. the electropositive character increases as we move down the group from li to cs. due to their strong electropositive nature, they emit electrons when exposed to light. this effect is termed as photo-electric effect. these elements are greatly used in photoelectric cells. as caesium and potassium are highly electropositive when compared to other elements, they are greatly used in the photoelectric cells when compared to other alkali metals. oxidation state: as alkali metal atoms have only one electron in the valence shell, they exhibit an oxidation state of +1. by losing one electron, these alkali metals form a unipositive ion that has a noble gas configuration. hence, it is very difficult to remove an electron from these metal ions resulting in very high second ionization energies. electro negativity: they show very less tendency to attract electrons i.e. very low electronegativity. electronegativity decreases from li to cs.",
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}
] |
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e8b69074bb711ec29f179e4c6029b5d5 | name an element that contains infinitely large number of atoms bonded together? | askiitians.com | 2021.25 | [
{
"text": "carbon is an element that has tendency to form long chains.in these chains carbon combines with many other carbon atoms.this property of carbon is called the catenation and this is because of its valency 4.not only this it can combine with other atoms also forming large number of compounds.",
"name": "",
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}
] |
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880c1690989d9c7d4ea57078a016d279 | if one of the circles x2+y2+2bx+c =0 and x2+y2+2bx+c=0 within the other then which option is correct and why?i ab>0,c>0ii ab>0,c | askiitians.com | 2021.25 | [
{
"text": "in this question there are two equations one is centre of i circle is (-a,0) and other is (-b,0) so it is also mentioned that one of them lies inside the other. so this means either both circle work",
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},
{
"text": "will be on negative side of x axis or will be on positive sidevof x axis .in the left side centre of both circle will be negative therefore the product of a and b will be -a *-b= positive that is ab .and if they are on positive side so both wil be positive .hence product will be >0 again. so our first answer is ab>0.and for second perpendicular distance>radius therefore a>√a2-ca2>a2-cc>0 hence proved",
"name": "",
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}
] |
|
7767e35221789c983a3d9b8be3dae116 | is there any way to increase the speed of your calculations in minutes. i downloaded many vids from vedic maths.....bt that too was difficult not that much easy........do u got any easy way to do that | askiitians.com | 2021.43 | [
{
"text": "dear pranav, the only way is practise . do practise as much as possible.. first clear all your concepts and then start solving problems. thats the best and only way. 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. 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. regards vijay luxmi",
"name": "",
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|
d0afd5afbe31f727aea95d37702db563 | let p be the point that divides the line segment ab in the ration ap:pb=m:n. if o is the origin show that op=(n/m+n)oa + (m/m+n)ob | askiitians.com | 2021.39 | [
{
"text": "dear stuednt, c divides ab internally. let a (x 1 , y 1 ) and b (x 2 , y 2 ) be the two points joined by line segment ab. let c (x, y) be the point on the line segment such that (in this case, ac and cb are real in the same direction on the line ab.) draw ap, cr and bq perpendicular to x-axis. am perpendicular to cr and cm perpendicular to bq. am = pr = x-x 1 cn = rq = x 2 -x cm = y-y 1 bn = y 2 -y from the similar triangles, cam and bcn, we have",
"name": "",
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}
] |
|
6e43661824f4d0c9b0379d35af4ff990 | the line l1=4x+3y-12=0 interest s the x-axis and y-axis at a and b respectively .a variable line perpendicular to l1 intersects x and y- axis at p and q respectively .the locus of circumcentre | askiitians.com | 2021.39 | [
{
"text": "circumcentre of which triangle ?? please write completely",
"name": "",
"is_accepted": false
}
] |
|
4cac1bd83d2b03e4e3ab1f9d4f12e686 | pl give an outline mark with ranks and branch of selected candidates for last 3 years in iit-jee and jee main | askiitians.com | 2021.39 | [
{
"text": "please go to the webistes of respective clgs and there u will find this",
"name": "",
"is_accepted": false
}
] |
|
08521cb6569113f399c1cfb59f192b5b | can you tell me about placements provided by nit surat under civil branch ? | askiitians.com | 2021.25 | [
{
"text": "i hope the query is resolved.",
"name": "",
"is_accepted": false
}
] |
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f6afc34c0378670aa6e8864155a7747f | when we excrete urine it has no odour, but when it is mixed with water it has a bad odour. why? | askiitians.com | 2021.25 | [
{
"text": "dear student, odor in pee is an indication it could be a urinary tract infection (uti). also causes stinging, increased frequency, and cloudy. 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 sagar singh b.tech, iit delhi",
"name": "",
"is_accepted": false
}
] |
|
9c9a8f5f4a4ed4127215693a1fd9295e | if i got admn to any of new iits and nit warangal, to which should i go | askiitians.com | 2021.43 | [
{
"text": "dear student, u should go to nit warangal!!!!!!! it's good than new iits!!!!!!! good luck!!!!!!!!!!!! plz. approve by clicking 'yes' given below!!!!!!!!!!!! plz. plz. plz.!!!!!!!!!!!!!",
"name": "",
"is_accepted": false
}
] |
|
2f6ec750587a745f449df2d8530caa2e | what is the acceleration exactly ? | askiitians.com | 2021.21 | [
{
"text": "acceleration in rate of change of velocity..... a=dv÷dt askiitians rocks",
"name": "",
"is_accepted": false
},
{
"text": "acceleration is nothing but it''s a change of speed of an object with respect to time.while you are moving in a bike you may observe that.for example if you are moving with constant speed say 60kmph means change in velocity zero so acceleration is zero. the main thing you keep in mind that is accelaration positive or negtive.....because if a person slowing down from 60kmph to 50kmph,here change in velocity is 10 so acceleration is 10 but it is negative(decreasing)..same way he person again come to 60kmph from50kmph..obviosly his acceleration is 10.but it is in increasing so we say positive or increasing acceleration....",
"name": "",
"is_accepted": false
},
{
"text": "accelaration is the rate of change of velocity.it shows how velocity is chaging with respect to time",
"name": "",
"is_accepted": false
}
] |
|
54eeab9353084a9d6d2074458dacfed8 | a square of side 4 units is divided into four equal squares. the square portion abch is removed and placed over hcde. what is the new centre of mass of the system. the original body density and thickness is uniform. | askiitians.com | 2021.25 | [
{
"text": "hi, please find the solution to your problem.",
"name": "",
"is_accepted": false
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] |
|
cd511dd7170c7d20c2fae453a1e89ae0 | the arsenic pentachloride molecule is trigonal bipyramidal the d orbitals used by arsenic for hybridization are???? | askiitians.com | 2021.39 | [
{
"text": "dz 2 orbital",
"name": "",
"is_accepted": false
}
] |
|
35a7f094f2d01818f42e440b6aa1192e | q. if (z+1)^7 +(z)^7=0 have roots z1,z2,.....,z7,where z is a complex number.find the value of summation of i=1 to r=7 re(zr) | askiitians.com | 2021.31 | [
{
"text": "open (1+z)^7 = 1+7z...........+7z^6 +z^7 -----binomial theorom putting in the given equation we get 2 z^7 + 7 z^6 .............. +1 = 0 as z1 , z2 ......z7 are the roots of above equation z1+z2+........z7 = -7/2 ...........theory of equations; sum of roots = - (coeff. of second last term/coeff of the highest term) z1 = re(z1) + i img (z1) similarly others now comparing real part of l.h.s and r.h.s we get summation of real part of z1 to z7 = -7/2",
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] |
|
c9aaa18d77fa57ff3326dac85476217d | solve by wavy curve method .....plz answer with complete steps .........so that i can understand it well..... | askiitians.com | 2021.21 | [
{
"text": "please attach the file again and revert",
"name": "",
"is_accepted": false
}
] |
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