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d235616cc75255fc94fdea943e4ad458 | in which heat is transferred by all three modes of transfer via conduction convection and radiation | askiitians.com | 2021.21 | [
{
"text": "dear student, vacuum flask,electric oven or electric heater. hence first option. cheers!! regards, vikas (b. tech. 4 th year thapar university)",
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11cdc0ba62bacc3538d1dec32e7d8491 | sir, my jee advanced marks is 93. i am from sc category. can i get cse in any new iit? thank you. | askiitians.com | 2021.31 | [
{
"text": "your predicted jee advanced 2014 rank is between 1001 and 1100 ( sc ) yes, you may get cse in iit patna & maybe ism dhanbad with this rank. there are less chances to get cse in other new iits thanks bharat bajaj iit delhi askiitians faculty",
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b13fa5b1b9b77ed6f380c56c80d9af9d | if a,b,c are in hp then show that a/b+c,b/c+a,c/a+b in hp | askiitians.com | 2021.43 | [
{
"text": "we can use reverse process here i.e. let us assume the part which should be proved is right now we will prove the given part. hence (b+c)/a,(a+c)/b,(a+b)/c will be in a.p. so (b+c)/a+1,(a+c)/b+1,(a+b)/c+1 also in a.p =(a+b+c)/a,(a+b+c)/b,(a+b+c)/c so1/a,1/b,1/c will be in ap so a,b,c will be in h.p",
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69cdfecd805db3f3dbc4f5935ee05320 | (1)how many ways 4 letter can be selected from the word examination . | askiitians.com | 2021.21 | [
{
"text": "we have, 11 letters: {a, a, e, i, i, o, m, n, n, t, x}; out of them there are 3 pairs: {a, a}, {i, i} and {n, n}. so, # of distinct letters is 8: {a, e, i, i, o, m, n, n, t, x} as pointed out, there are 3 different cases possible. {abcd} all 4 letters are distinct: 8c4 = 70 {aabc} - two letters are alike and other two are distinct: 3c1 * 7c2 = 63 {aabb} - two letters are alike and other two letters are also alike: 3c2 = 3 total=70+63+3=136.",
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a92f45b516e4cda05e3ae4fca8dcff44 | the correct order of increasing solubility of agcl in 1-water 2-0.1m nacl 3-0.1m bacl2 4-0.1m nh3. ( plz solve with explanation) | askiitians.com | 2021.43 | [
{
"text": "due to common ion (herecl-) effect (which tells that in presence of strong electrolyte, if weak electrolyte is dissolved then its solubility further decrease if both the electrolytes contains same ion) so least solubility in bacl2 now nh3 can be in the form nh4+ and so it will combine with cl- to form nh4cl salt and so it inhances the solubiltitof agcl",
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cab69eb9ab80e8c877cd3b14acb2813a | 50. when light falls at critical angle on the surface of a rarer medium while coming from a denser medium, the refracting angle is \_\_\_\_\_\_\_\_\_\_\_\_ . | askiitians.com | 2021.39 | [
{
"text": "answer: c explanation: 90°",
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e9ba91a7e58f8c23927bd1f99be29fbf | one container is filled with helium gas and another argon gas. if both of these containers are at the same temperature which gas molecule have the higher rms speed explain | askiitians.com | 2021.43 | [
{
"text": "vrms=√3rt/m. m=mol.wtvrms is inversely proportional to molecular weight. m(he)=4 and m(ar)=36 m(ar)>m(he) so vrms(ar)",
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9b2fb216122caecafbe1f7496aafa10c | i am from andhra pradesh. iam getting ascore of 259 in aieee 2009.is it agood score and can i get a seat in nit warangal with these marks?can u please specify which branch i may get? | askiitians.com | 2021.31 | [
{
"text": "dear student, with a total of 259 in aieee your expected rank is around 3500-4800. now with this rank you can surely get into good nit’s. and yes you hold a good chance to get mechanical, civil etc in nit warangal. also , since you are from ap, hence you can get any branch.",
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08b69021eb4ad95821206de1d266722b | is newton's law of gravity consistent with general relativity? | askiitians.com | 2021.43 | [
{
"text": "dear student please ask questions related to jee regards",
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|
1f8b9ed3451a4e25fbab8d362c5207d2 | what should i prefer .... biotech in motilal,allahabad or cs in iert allahabad.....is there a gud scope of biotech in india???? | askiitians.com | 2021.31 | [
{
"text": "cs should be preferred ...scope of biotech in india is less now a days may be in future it will be but lot of reasearch work is gng on in foriegn countries and in india also thanls",
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ebab7ad16304b7dda5b90b51159c3c93 | why do the planets not collide while revolving around the sun ? | askiitians.com | 2021.31 | [
{
"text": "planets move in their own orbits, so they don’t collide with each other.",
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"text": "each and every planet has its own orbit and axis that is further influenced by other celestial bodies such as the planet jupiter whose magnetic field is strong enough to have an influence on other planets, and the sun, our own solar star itself whose gravity keeps every planet stick to its own orbit at a fixed distance from the sun. note: orbits and axis are terms for imaginary or invisible paths.",
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143d0e46659f02c76f385508467d99d1 | 32. if one zero of the quadratic polynomial x² + 3x + b is 2, then the value of b is (a) 10 (b) -8 (c) 9 (d) -10 | askiitians.com | 2021.43 | [
{
"text": "answer: d",
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395a516336d72375fb219d9fdc9fcc0d | why we put water in the roots of the plants? explain | askiitians.com | 2021.39 | [
{
"text": "plants must transport water from the roots to the leaves where it is needed for the process of photosynthesis. nutrients produced in the leaves by photosynthesis are transported to all the parts of the plant . the phloem carries nutrients up and down the plant . the xylem only carries water up the plant .",
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f6fd72c01715f9337e15b940ae412408 | lithium iodide is more covalent than lithium fluoride.why? | askiitians.com | 2021.43 | [
{
"text": "the large size of iodine exerts a more polarising power to lithium as compared to fluorine and thus has more covalent character than fluorine.fluorine more over has high electronegativity. so the electro-static force of attraction between li and f is very high and high enough to hold the two atoms together so firmly",
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"text": "the electronegativity of fluorine is more than iodine . also the covalent character increases down the group . thus , lithium iodide is more covalent than lithium chloride",
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17e6c72348a98045c6e4e694815b9470 | any polar cordinate of any point p (r,@).now @ lies b/w?? r may be -ve ?? | askiitians.com | 2021.39 | [
{
"text": "r varies from zero to +∞, @ varies from zero to 2π",
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fda1202d9e243f3aed907fbdc5530ba4 | i got general category rank 5783 and obc rank 836. as per last year's stats i can get in old iits industrial engg ocean engg material and metallurgical automotive engg in new iits mech engg electrical engg computer science which is best among all above wrt to scope and job oppurtunities? | askiitians.com | 2021.21 | [
{
"text": "hi nidhin , congrats on your rank in jee!!!! i think you should give preference to a branch of your choice rather then an thing else . apart from the amongst the listed you can go for metallurgy is has less jobs but they are good paying jobs . automotive engg. also have a decent scope abroad . as about the one's in new iit's mech. ece , cs all are almost equivalent when it comes to placements thus choose one of your liking. feel free to post as many as doubts you have we wud be happy to help. all the best !!!! anshul",
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49a8c6f944c61bc97f6ff1dfc0d456d1 | use the identity (x + a) (x + b) = x2 + (a + b) x + ab to find the following products. (2x + 5y) (2x + 3y) | askiitians.com | 2021.39 | [
{
"text": "dear student (2x + 5y) (2x + 3y) = 4x^2+ (5y + 3y)2x + 15y^2 = 4x^2+ 16xy + 15y^2 thanks",
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59eff9a096d22b8650f61c33e3a7949a | sir , which subject should we comcentrate on , in which we are not that good or else in which we are a bit good and can get maximum marks if we read it perfectly ? | askiitians.com | 2021.21 | [
{
"text": "hi, the best way to prepare good for a chapter is solve questions from a good book that targets jee advanced. in this way you will go through each question once and will know the level. solve all of them. that would be sufficient. ….….…..….….…..….….…..….….…..….….…..….….…..….….…..….….…..",
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"text": "see what matters in end is overall percentages if you are focussing on entrance exams so it depends how weak you are at something. first correct that so that your average improves and then go for the subjects which you are bit good. if you specifically has passion for some subject and want to pursue in that field make that subject better and better.",
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e70c8570f750f47786bff2f90ae72204 | a mass m is split into two parts, m and m-m , which are then separated by a certain distance. what ratio m/m maximizes the magnitude of the gravitational force between the pairs? | askiitians.com | 2021.21 | [
{
"text": "dear nidhi f=gm(m-m)/r 2 df/dm = g/r 2 (m-2m)=0 m=m/2 m/m =1/2 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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23e9bdc5bd6948fb52e098e08cd3128a | please help me with the above attached question thankyou...... | askiitians.com | 2021.21 | [
{
"text": "dear student take log to the base e and then differentiate, you will get the required result. hope it helps",
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"text": "x^y = e (x-y) = e^x / e^y x^y * e^y = e^x (xe)^y = e^x take log on both sides of above eq y * log (xe) = x ---(1) differentiate both side wrt x dy/dx * log x. + ey/xe. = 1 dy/dx. = 1 – y/x log(xe) = x-y / x*log (xe) from question we know x-y = y * log x so dy/dx= y*log x x* log(xe) from (1) y*log(xe)=x so y/x=1/log(ex), substitute this is above eq to get answer",
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49a96bbf699a0fecff0cd5a78308b428 | a gun is firing bullets with velocity v by rotating through 360 ° in the horizontal plane. the maximum area covered by this is?? | askiitians.com | 2021.21 | [
{
"text": "there is some element missing in the question, probably time or distance. please check your question. we can solve it by following way (but we need to know the complete question to be sure). the area would be the area of the circle as the gun moves 360 degrees so, a = πr 2 where radial distance, r = v o x t t =time so if we have all the data we can move ahead. thanks & regards sunil kumar, askiitians faculty m.sc., iit kharagpur",
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3d0c746d3768ae16ffec5efd48cd5559 | 67. list two criteria of measuring the biodiversity of an area. [foreign 2014] | askiitians.com | 2021.43 | [
{
"text": "answer: explanation: one measure of the biodiversity of an area is the number of species found there. secondly, the range of different life forms is also important.",
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1cb4495cceabdd29259745524ca69126 | i got seat in chemical science and technology,iit guwahati.also i can get comp sci in iiit hyderabad.in future i want to do mba.which is better to join?plz reply | askiitians.com | 2021.39 | [
{
"text": "it would be better if you take chemical in iit guwahati. iit provide a good exposure to student in not academics but also in other activities also. and you wanted to do mba in future, so iit definitly enhances your confidence which is very necessary for mba. also, if there is any problem in future in mba, iit provide a good placement than iiit hyderabad.",
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0aafcb5e694b628b9b50154e92dcb09d | prove that the value of 5cosa+3cos(a+π/3)+3 lies between -4 and 10 | askiitians.com | 2021.43 | [
{
"text": "hint: !) use the formula of cos(a+b) = cosacosb – sinasinb for cos (a + pi/3) 2) then convert the given eq. in the form of mcosa + nsina + c. 3) then its range will be in between: root(m 2 + n 2 + c) to –root(m 2 + n 2 + c) . thanks, vj",
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3cd4375d37403081be5194ab96e50652 | explain where and how urine is produced? explain where and how urine is produced? | askiitians.com | 2021.31 | [
{
"text": "hey student. - blood passes through filtration units in the kidney called nephron - passes through glomerulus in the bowman's capsule - ultra filtration - filtrate initially has glucose, amino acids, water, salts and nitrogenous waste - reabsorption – water (as per the need of the body), glucose and amino acids are all reabsorbed – - secretion of excess water, salts and urea (nitrogenous waste) which makes up the urine.",
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5b1fa78f47f4e89cfcf16196b2f2c813 | find a and b so that y= a sin 3x + b cos 3x satisfies the equation d2y/dx2 + 4(dy/dx) +3y = 10 cos 3x. | askiitians.com | 2021.31 | [
{
"text": "dy/dx=3acos3x-3bsin3x d 2 y/dx 2 = -9asin3x-9bcos3x -9asin3x-9bcos3x+4(3acos3x-3bsin3x)+3(asin3x+bcos3x)=10cos3x -9a-12b+3a=0=>-6a-12b=0=>a=-2b -9b+12a+3b=10=> -6b+12a=10=>-6b-24b=10=>-30b=10=>b=-10/30=-1/2 so a= 2/3 ans a=2/3, b=-1/3 thanks & regards rinkoo gupta askiitians faculty",
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"text": "hi you can find a thanks & regards, arun kumar, btech,iit delhi, askiitians faculty",
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b07e53724fd0d2c254e3a2f17eab2299 | what is the difference between flora and manual ? explain with examples . | askiitians.com | 2021.25 | [
{
"text": "a flora describes plants and where they live. floras typically include a dichotomous key for identification purposes and often times will include range maps as well. floras are almost always designed to be simultaneously regionally constrained and regionally exhaustive/complete (i.e., includes all plants that grow in that region or at least all taxonomic divisions of specified taxa) a manual applies much more broadly to plants, and typically instructs you on a subject (e.g., identification/differentiation of species). a manual does not need to be exhaustive and its scope is typically user defined (though often based on the scale/range of it's underlying subject). however, some have used the term manual to be more or less synonymous with flora or otherwise similar document",
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"text": "flora is aa book containing complete information about plants found in a particular area. it gives the actual account of habitat and distribution of various plants of the given area. for e.g flora of delhi by j.k. maheshwari manual is a book containing complete listing and description (not accounts for habitat and distribution,etc) of plants growing in particular area. its useful in identification of names of various species found in that area. for e.g exotic plant manual by alfred byrd graf hope it helps. 👍",
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41c08fe21cef77c53690f5f5b83ff076 | the number of lines which pass through the point (2, –3) and are at the distance 8 from the point (–1, 2) is (a) infinite (b) 4 (c) 2 (d) 0 | askiitians.com | 2021.39 | [
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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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e2835b1f2ac126c5c161243d933dd47c | can u please explain d3s hybridization in detail and also compounds which show this | askiitians.com | 2021.43 | [
{
"text": "@ preet scientist are not yet conform that d3s hybridisation do really exist or rnot . but acc to cbse it exist . as of now just remember 1 thing – in d3s hybridisation only dxy , dzx , and dyz orbitals are inv olved , and these orbital are in same line of action with each other . and das far as example is concerned , then its the hybridisation of mn in mno4 compound . but its acc to cbse , scientist are not conform abt it . all the best ..",
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b3593ba12eccda4b381147f377e95bd5 | why hydration of metals ar compounds is exothermic reaction ?, also i need the reason from the moicular structure. | askiitians.com | 2021.31 | [
{
"text": "hello student, hydration is the process of solvation of an ion by water molecules. when metals are dissolved in water , they get ionized and the cation formed undergo hydration. hydration of metals is exothermic process and thus the emery is released which is used for ionization of metal",
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a99c6e2125ae1c8d8a01bdcbe0a86210 | how many percent of maths, physics and chemistry must come in iit jee of 11th std. syllabus | askiitians.com | 2021.39 | [
{
"text": "hi, almost 40-50% comes from 11th class topics so you have to study both 11th and 12th with full dedication best of luck regards",
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446dbaf81e35270cbe2ffba214d58549 | identify the correct statement regarding a spontaneous process:
(a) lowering of energy in the process is the only criterion for spontaneity. (b) for a spontaneous process in an isolated system, the change in entropy is positive.
(c) endothermic processes are never spontaneous. (d) exothermic processes are always spontaneous ? | askiitians.com | 2021.31 | [
{
"text": "there are several equivalent alternative ways of representing the second law of thermodynamics . one is in terms of entropy, s, a state function which is a measure of the molecular disorder of a system. the law states that in the course of a spontaneous change, the entropy of an isolated system must increase . note that since the universe is itself an isolated system, we can extend the law to any system within the universe by noting that for any spontaneous change, the total entropy of the universe must increase (1) for a spontaneous process in an isolated system, the change in entropy is positive",
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01df1212c4760ef05fa00b5d81af30b8 | briefly explain properties of elements: | askiitians.com | 2021.31 | [
{
"text": "properties of elements the properties of the elements exhibit trends. these trends can be predicted using the periodic table and can be explained and understood by analyzing the electron configurations of the elements. elements tend to gain or lose valence electrons to achieve stable octet formation. stable octets are seen in the inert gases, or noble gases, of group vii of the periodic table. these trends explain the periodicity observed in the elemental properties of atomic radius, ionization energy, electron affinity, and electro negativity. atomic radius: the atomic radius of an element is half of the distance between the centers of two atoms of that element that are just touching each other. generally, the atomic radius decreases across a period from left to right and increases down a given group. the atoms with the largest atomic radii are located in group i and at the bottom of groups. ionic radius: the radius of an atom in its ionized state is its ionic radius. ionic radii depend on two factors, one the degree of ionization and other, the type and number of neighboring atoms (coordination). the radius decreases as electrons are lost and increases as electrons are gained. ionization energy: the ionization energy, or ionization potential, is the energy required to completely remove an electron from a gaseous atom or ion. the closer and more tightly bound an electron is to the nucleus, the more difficult it will be to remove, and the higher its ionization energy will be. ionization energies increase moving from left to right across a period (decreasing atomic radius). ionization energy decreases moving down a group (increasing atomic radius). group i elements have low ionization energies because the loss of an electron forms a stable octet. electron affinity: electron affinity reflects the ability of an atom to accept an electron. it is the energy change that occurs when an electron is added to a gaseous atom. atoms with stronger effective nuclear charge have greater electron affinity. some generalizations can be made about the electron affinities of certain groups in the periodic table. the group iia elements, the alkaline earths, have low electron affinity values. these elements are relatively stable because they have filled s subshells. group viia elements, the halogens, have high electron affinities because the addition of an electron to an atom results in a completely filled shell. group viii elements, noble gases, have electron affinities near zero, since each atom possesses a stable octet and will not accept an electron readily. elements of other groups have low electron affinities. electronegativity: electronegativity is a measure of the attraction of an atom for the electrons in a chemical bond. the higher the electronegativity of an atom, the greater its attraction for bonding electrons. in a group, the electronegativity decreases as atomic number increases, as a result of increased distance between the valence electron and nucleus (greater atomic radius). an example of an electropositive (i.e., low electronegativity) element is cesium; an example of a highly electronegative element is fluorine.",
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a72f6a43e13f1ff2e56b89142a4fef37 | now i have only six months i have completed calculus of tmh should i do fromarihant books | askiitians.com | 2021.31 | [
{
"text": "hi manoj, you should definitely go for practicing from arihant books. they are a good source of questions regards rajat",
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"text": "hi, arihant books are a source of new and interesting problems different from other books which have only traditional problems and they are designed for jee and aieee so go for it. regards, vinayak",
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"text": "hi manoj definitely do it. it will help you in developing your skills and surely give u qualitative questions to practice before exam. best of luck see u next year regards bibhash k jha",
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2a76f73d2fd9c6b74d267a2d6e65ef06 | why the melting point in 15 group of perioic table increases from n to arsenic and decrease from antimony to bismuth?? | askiitians.com | 2021.39 | [
{
"text": "melting point (amount of energy required to break bonds to change a solid phase substance to a liquid phase) increases going down the group. thank you ruchi askiitians faculty",
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a8e61d10354a3bc316a9a1d9146913cf | can i know the marks of the top 10 rankers in iitjee 2012? | askiitians.com | 2021.31 | [
{
"text": "visit iit jee website to get the rank lius",
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8d20735c1dff7c2c72af219d51104720 | what is elastic hysteresis? | askiitians.com | 2021.31 | [
{
"text": "difference between strain energy required to generate a given stress in a material and elastic energy at that stress. it is the energy dissipated as heat in a material in one cycle of dynamic testing. elastic hysteresis divided by elastic deformation energy is equal to damping capacity. thanks and regards sunil kr askiitian faculty",
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90d17906fdfc54bc10547b400fbe528f | when where the mit test will be held | askiitians.com | 2021.39 | [
{
"text": "will be conducted on 1st april 2012 (tentative) between 10 am to 1 pm at 7 centres — ahmedabad, bengaluru, bhopal, delhi, kolkata, mumbai and pune. mitid™ reserves its right to change or cancel any of these centres.",
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51866728e02dba9aca1b36aac056ae0d | 15. why are we able to sip hot tea or milk faster from a saucer than a cup? | askiitians.com | 2021.43 | [
{
"text": "increase in surface area increases evaporation rate and cools faster in a saucer than in a cup. a liquid has a larger surface area in a saucer than in a cup. thus, we are able to sip hot tea or milk faster from a saucer than a cup.",
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e5052d8b5a09a283762aacfb8a1e93a4 | i am getting about 100 marks in iit 2010 exam,can i apply for any other college with these marks | askiitians.com | 2021.25 | [
{
"text": "dear sushal you will get a rank in eml list the list of institutions that will be using the eml of jee is given below. the list may be updated time to time. list of collges for eml 1. indian institute of space science and technology http://www.iist.ac.in 2. indian institute of science education and research (a) mohali http://www.iisermohali.ac.in/ iiser mohali (b) pune http://www.iiserpune.ac.in/ iiser pune (c) kolkata http://www.iiserkol.ac.in/ iiser kolkata (d) bhopal http://www.iiserbhopal.ac.in/ iiser bhopal (e) thiruvananthapuram http://www.iisertvm.ac.in/ iiser thiruvananthapuram 3. rajiv gandhi institute of petroleum technology society (rgipt) http://www.rgipt.in/ 4. indian institute of maritime studies (merchant navi) http://iims.dgshipping.com/ indian institute of maritime studies, mumbai for availability of courses, admission schedule, fees structure and any other information related to these institutions, please visit their respective websites or contact them directly. this information will not be provided at jee websites or by the jee offices. -- regards badiuddin",
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b5f171017e37ca5025f6115f362d3fe4 | a thin hollow prism is filled with liquid.angle of prism = 60°,angle of minimum deviation=30°. what is the refractive index of the liquid?i remember only 2 options properly1) 1.412) 1.5.... (1.5 something) | askiitians.com | 2021.39 | [
{
"text": "dear student, as angle of deviation(d) = 30 degree angle of prism(a) = 60 and we also know that refractive index = sin(a+d/2)/sin a/2 n = sin((60+30)/2)/sin 60/2 n = sin 45/sin 30 n = √2 n = 1.41 cheers!! regards, vikas (b. tech. 4 th year thapar university)",
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7e73df911613e4ab75e4d91cac4f7688 | williamson synthesis | askiitians.com | 2021.43 | [
{
"text": "r-na + br-o-r’ = r-o-r’ + nabr",
"name": "",
"is_accepted": false
},
{
"text": "williamson synthesis: it is an important laboratory method for the preparation of symmetrical and unsymmetrical ethers. in this method, an alkyl halide reacts with sodium alkoxide to form ether",
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"is_accepted": false
}
] |
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a67c05225f63ced95fd404737d117522 | sorry for the last incomplete question the original one is: a non volatile organic compound is used to make two solutions a,b .solution a contains 5 gm of z dissolved in 100 gm of water and solution b contains 2.31 gm of z in 100 gm of benzene .solution a has a vapour pressure of 754.5 mm hg at the normal boiling point of water and solution b has the same vapour pressure at the normal boiling point of benzene.calculate the molar mass of z in the solutions a and b and account for the difference | askiitians.com | 2021.31 | [
{
"text": "dear dev given data mass of water = 100 g the mass of solute = 5 g number of moles of water = mass / molar mass = 100g/18g/mol n 2 = 5.56 mol the vapor pressure of water at 100 deg c, p0 = 760mmhg the vapor pressure of solution at 100 deg c= 754.5 mmhg we know that accroding to raoults law the vapor pressure of solution =mole fraction of water *p0 molefraction of water = 754.5 mmhg / 760 mmhg =0.9927 mole fraction of solute = 1-0.9927 =0.00723 molefraction of solute =n 1 /(n 1 +n 2 ) ∴ n 1 /(n 1 +n 2 ) =0.00723 (n 1 +n 2 ) /n 1 = 1/0.00723 (n 1 +5.56mol) /n 1 = 138.3 n1 = 0.04 mol molar mass of solute z = mass /moles = 5.0 g / 0.04 mol = 125 g/mol caseii given data mass of benzene = 100 g the mass of solute = 2.31 g number of moles of benzene = mass / molar mass = 100g/78 g/mol n 2 = 1.28 mol the vapor pressure of benzene at 100 deg c, p0 =760 mmhg the vapor pressure of solution at 100 deg c= 754.5 mmhg we know that accroding to raoults law the vapor pressure of solution =mole fraction of benzene *p0 molefraction of water = 754.5 mmhg / 760 mmhg =0.9927 mole fraction of solute = 1-0.9927 =0.00723 molefraction of solute =n 1 /(n 1 +n 2 ) ∴ n 1 /(n 1 +n 2 ) =0.00723 (n 1 +n 2 ) /n 1 = 1/0.00723 (n 1 +1.28mol) /n 1 = 138.3 n1 = 0.00932 mol molar mass of solute z = mass /moles = 2.31 g / 0.00932 mol = 247.85 g/mol molar mass of z in case ii isalmost double to the molar mass of z in case i that means thesolute dimerizes in bezene. 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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c206e36163327356e215192d41f96678 | what are ther expected cutoffs for obc pwd for jee paper1 and 2? | askiitians.com | 2021.21 | [
{
"text": "dear student the expected cut off for jee mains for obc will be nearly 70-75.",
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] |
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c994bd02c40855f0d7707de9e4a95901 | two organic compounds of a and b having same molecular formula of c4h6 decolouises br2/ccl4solutions.a gives precipitate with ammonical agno3 and oxidises to propanoic acid and co2 compound b does not gives precipitate with ammonical agno3 and oxidises with oxalic acid and co2 . compound a and b arre respectively | askiitians.com | 2021.39 | [
{
"text": "compound a is a terminal alkyne while compound b is but-2-yne. since only terminal alkyne give test with agno3",
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}
] |
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32add12331f04e307b09f730c67aa95c | tge equations of the diagonals of the sqaure formed by the pairs of straight lines 3x^2+8xy-3y^2=0 and 3x^2+8xy-3y^2+2x-4y-1=0 are | askiitians.com | 2021.39 | [
{
"text": "just write the equation from image equation of ac and bd",
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fbcbaf04426616a53190df02cfab43a5 | a charge +q is fixed at each of the points x = x. , x = 3x. , x = 5x. and so on to infinity on the x-axis and a charge -q is fixed at each of the points x = 2x. , x = 4x. , x = 6x. and so on to infinity. here x. is a positive constant. take the electric potential at a point due to a charge q at a distance r from it to be q/(4*pie*epsilon.*r). then the potential at the origin to the above system is:- | askiitians.com | 2021.21 | [
{
"text": "electric potentials at origin due to charge +q fixed at x = x.,x = 3x., x = 5x.,... are kq/x., kq/3x.,kq/5x.,... electric potentials at origin due to charge –q fixed at x = 2x.,x = 4x., x = 6x.,... are – kq/2x., –kq/4x., –kq/6x.,... here k = 1/4 net electric potetial at origin is kq/x. – kq/2x + kq/3x – kq/4x + …. = (kq/x) (1 – 1/2 + 1/3 – 1/4 + …...) ….(1) now, ln(1 + x) = x – x 2 /2 + x 3 /3 + x 4 /4 – …... put x = 1. ln(1 + 1) = 1 – 1 2 /2 + 1 3 /3 + 1 4 /4 – …... or 1 – 1/2 + 1/3 + 1/4 – …... = ln(2). substitute in (1). net electric potetial at origin is (kq/x) ln2 or (q ln2) / 4 x .",
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165034747b5366302dcb4d6e6d790575 | suppose a,,x,y,z,b are in a.p.when x+y+z=15 and a,l,m,n,b are inh.p.when 1/l+1/m+1/n=5/3.find a if a>b | askiitians.com | 2021.31 | [
{
"text": "dear student, since a,x,y,z,b are in ap, a+b = x+z = y = x+y+z/2 = 15/2 ,and since, a,l,m,n,b are in hp,their reciprocals ard in ap, which means, 1/a + 1/b = 1/l + 1/m + 1/n /2 = 5/6 ,that is 6(a+b) = 5ab = 45 ,implies ab=9,a+b=15/2 ,so solve the 2 eqns to get the 2 variables and you get a=6 and b=3/2 thanks , plzz approve my answer if you like it",
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135eb5f694d5fe80ef89dbcaec0a0b2d | concurrent forces 3p,7p and 5p act respectively along three directions which are parallel to side of an equilateral triangle taken in order determine the magnitude and direction of the resultant | askiitians.com | 2021.31 | [
{
"text": "dear student, here’s your answer for an equilateral triangle, all angles are equal a=b=c=60 degree sum of forces acting in horizontal direction: f1 = 3p + 5p (-cos60) + 7p (-cos60) = 3p + 5p (-1/2) + 7p (-1/2) = -6p sum of forces acting in vertical direction: f2 = 0 + 5p (sin60) + 7p (-sin60) = 5p (0.866) + 7p (-0.866) = -1.732p magnitude of resultant force (r)= square root (f1 + f2) = square root ((-6)^2 + (-1.732)^2)) = square root (39) magnituder = 6.24p let θ be the angle of the resultant force in direction x then θ = tan-1 [(-6p)/(-1.732p)] direction of resultant force: θ = 73.89 degree askiitians expert ankit",
"name": "",
"is_accepted": false
},
{
"text": "for an equilateral triangle, all angles are equal a=b=c=60 degree sum of forces acting in horizontal direction: f1 = 3p + 5p (-cos60) + 7p (-cos60) = 3p + 5p (-1/2) + 7p (-1/2) = -6p sum of forces acting in vertical direction: f2 = 0 + 5p (sin60) + 7p (-sin60) = 5p (0.866) + 7p (-0.866) = -1.732p magnitude of resultant force (r)= square root (f1 + f2) = square root ((-6)^2 + (-1.732)^2)) = square root (39) magnituder = 6.24p let θ be the angle of the resultant force in direction x then θ = tan-1 [(-6p)/(-1.732p)] direction of resultant force: θ = 73.89 degree",
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] |
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2b2aede603f4bf4e89bf3f0a0fd5e8bd | 3. a cistern, internally measuring 150 cm × 120 cm × 100 cm, has 129600 cm3 of water in it. porous bricks are placed in the water until the cistern is full to the brim. each brick absorbs one-seventeenth of its own volume of water. how many bricks can be put in without overflowing the water, each being 22.5 cm × 7.5 cm × 6.5 cm? | askiitians.com | 2021.43 | [
{
"text": "given that the dimension of the cistern = 150 × 120 × 110 so, volume = 1980000 cm3 volume to be filled in cistern = 1980000 – 129600 = 1850400 cm3 now, let the number of bricks placed be “n” so, volume of n bricks will be = n×22.5×7.5×6.5 now as each brick absorbs one-seventeenth of its volume, the volume will be = n/(17)×(22.5×7.5×6.5) for the condition given in the question, the volume of n bricks has to be equal to volume absorbed by n bricks + volume to be filled in cistern or, n×22.5×7.5×6.5 = 1850400+n/(17)×(22.5×7.5×6.5) solving this we get, n = 1792.41",
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] |
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b22dc809a1129b1d052f85051b21f5c9 | for several days the temperature at the bottom of a pond is 4 degree celsius and the air temperature just above the top surface of the pond is -1 degree celsius. depth of the pond is l . the thermal conductivity of ice is 3 times that of water. thickness of frozen layer of the ice formed must be? | askiitians.com | 2021.39 | [
{
"text": "the rate of heat flowing from the bottom of the lake to the ice-water interface must be equal to that from the interface to the atmophere.",
"name": "",
"is_accepted": false
}
] |
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049a031bbdca033e7014c2b305cf0407 | use a suitable identity to get each of the following products. (- a + c) (- a + c) | askiitians.com | 2021.39 | [
{
"text": "dear student (- a + c) (- a + c)=(– a + c)^2 = c^2+ a^2–2ac using (a-b)^2= a^2+ b^2 - 2ab thanks",
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}
] |
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00321277623aefbdee51f15ba5467ac8 | if a o =x, a n+1 =f(a n ), n=0,1,2...... find a n when (a)f(x)=sqrt(|x|) ans. |x|^(1/2^n) (b) f(x)=1/1-x ans. a n = x if n=3m, m{0,1,2…} =1/1-x if n=3m+1 =x-1/x if n=3m+2 plz giv a hint.. | askiitians.com | 2021.25 | [
{
"text": "if a o =x, a n+1 =f(a n ), n=0,1,2...... then rest i think u should try first! plz approve!",
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] |
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1acd9c2d20212ec17c7ba32448c571bc | formula for wattless current and wattless power and its meaning | askiitians.com | 2021.25 | [
{
"text": "dear student please attach the image of the question regards",
"name": "",
"is_accepted": false
},
{
"text": "dear student question is not clear please attach an image, we will happy to help you good luck cheers",
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21a9f1a9d13ec7d34dbfd2dfe59e13d7 | what to choose iit madras mechanical iit mumbai civil iit roorkee mech,electrical or iit indore cs i am from madhya pradesh | askiitians.com | 2021.25 | [
{
"text": "civil in iit mumbai offers a very good future.",
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"is_accepted": false
}
] |
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50f945055425a3f980c03e4807875fb0 | for information technology branch in iit how many marks should i get in st catogory | askiitians.com | 2021.43 | [
{
"text": "if you get around 60 - 70 marks, you will get under your category.",
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}
] |
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7461080f33211c7d3ffb040787c5fef3 | f(x)=(sq(m)-1))xsq + (m-1)x+n+2(m not equal to 1) be an odd function and m and n are constants.determine whether g(x)=x(power)m +x (power)n is an even or odd or none. | askiitians.com | 2021.25 | [
{
"text": "hey its answer is none .f(x) = (m 2 - 1)x 2 + (m - 1)x + n + 2 for odd function f(x) = - f(x)................................................(1) here as x 2 is even function its coffeceiont must be 0 m 2 - 1 = 0 m = -1 after solving equation 1 we get n=-2 g(x) will be neither even nor odd",
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},
{
"text": "dear chauhan quadratics are never odd they are even if coeff. of x is 0",
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012b312bca2d896fbb13a80db198e2b3 | objective questions | askiitians.com | 2021.21 | [
{
"text": "dear prici, askiitians.com provides online 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. askiitians provide you all the best possible information, feel free to ask. all the best. thanks and regards. akhilesh shukla",
"name": "",
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] |
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19ab57b7a71b867e47097b8d28893fca | my jee marks is 216. what will be my rank? my telangana board marks 979. what will be my rank in mains? | askiitians.com | 2021.21 | [
{
"text": "hii congratulations first on your score. you will get a very well rank between 4000 air to 7000 air. best of luck",
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] |
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8cdaceab88483ac82548155bf1c8edbe | dsbubduhsdgywgd cgucgdugsudhwydgywguwdgygdwydgywdg value of................ sin [1/2 cot^-1 (-3/4)]= | askiitians.com | 2021.43 | [
{
"text": "=sin [1/2 cot -1 (-3/4)] =sin [1/2( pie-cot -1 (3/4)] =sin [1/2( pie-sin -1 (4/5)] =sin [( pie/2-sin -1 (4/5)/2] =cos(sin -1 (4/5)/2] =cos(cos -1 2/root 5) =2/root 5 …..hope this clears your doubt.",
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6b739854e6861f8987bed8e60c7e6808 | if 5cosx+5cosy=13 then find max.value of 5sinx+12siny= | askiitians.com | 2021.43 | [
{
"text": "this is an invalid question because of cosx and cosy have max value 1 so 5cosx + 5cosy can be maximum 10 not 13. plzz chk",
"name": "",
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},
{
"text": "the problem is wrong i think..... 5 cos x + 12 cos y = 13 is the correct problem",
"name": "",
"is_accepted": false
},
{
"text": "this question is wrong since max value of cosx or cosy can be 1 . and if cox=cosy=1 then max value of 5 cosx+5cosy =5*1+5*1 =10 which is less than 13",
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a90995597a4bc4654194e4202115d627 | state true or false-`in dicot stem, primary phloem is outer side of secondary phloem because endarch and exarch condition is seen w.r.t. xylem.` | askiitians.com | 2021.25 | [
{
"text": "i thnk its false...cz secondary phloem is always formed on the outer side...ad moreover..in dicot stem...endarch cond is seen....which means metaxylem is towards the outer side..and protoxylem on the inner side..",
"name": "",
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}
] |
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481ecb0f7d3fa883d7816f19ee961569 | plz give easy way to remember r and s configuration in chemistry | askiitians.com | 2021.21 | [
{
"text": "numbering each atomes connected with chiral carbon as give preriority of high molecular weight then go with 4 to 3 to 2 if anticlock wise then s configuration if clockwise then r configuration",
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"is_accepted": false
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] |
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ad690f91e1ae6c8d36cde42b2cbf1501 | thanks for your suggestion. also i would like to know about the automobile engg. branch at dtu, its placement and scopes. | askiitians.com | 2021.31 | [
{
"text": "as an automobile engineer, you can find employment in : -manufacturing industries -production plants -service stations -state road transport corporations -private transport companies -insurance companies -motor vehicle departments automobile manufacturing industries such as telco, l&t, ashok leyland, mahindra & mahindra, heldex india, bajaj auto and gabrial employ automotive engineering graduates as senior production engineer, quality engineer, mechanical design engineer etc. you may also join defence services of the country. you may set up your own business venture. you may even take up traditional teaching profession. 2) as far as salary is concerned, it depends on various parameters such as size of the organization, profile, qualification, experience etc. to give you a brief idea, for fresh graduates the average pay package offered ranges in between rs. 15,000 to rs. 20,000 per month. hope it helps. please feel free to revert. click on the thumbs up or mark it as the best, if you found this useful. wish you luck! thanks & regards rinkoo gupta askiitians faculty",
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56d7be48f1d134ecd44796fe284ddbec | my jee rank is 1997 , aieee rank-633, and bits score-367............which is d best option for me??? tell me the place and the branch also | askiitians.com | 2021.43 | [
{
"text": "dear cheenu khurana, u must go for bits pilani, & must opt mechanical or cs there!!!!!!! good luck!!!!!!!! plz. approve my answer by clicking 'yes' given below!!!!!!! plz. plz. plz.!!!!!! don't forget!!!!!!!",
"name": "",
"is_accepted": false
},
{
"text": "please yaar dont give wrong advice to people..u wud be the biggst fool to take bits with jee 1917..definitely go for iits...",
"name": "",
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}
] |
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31e47e72ce9cd7297aa9f6c913061d31 | probable score of my son is 505 in neet 2017 .is there any chance of getting mbbs in any govt. college | askiitians.com | 2021.39 | [
{
"text": "hi sir yes sure sir, there are good chances that your son will get a government mbbs seat with this much rank. so you can relax now as your son has performed good. he will get a seat surely regards sahil",
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] |
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f0761c543807a68d16748e3c72f09c7b | can you please give us real life example of doppler`s effect? | askiitians.com | 2021.43 | [
{
"text": "yes that seems appropriate given train is blowing horn",
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a99b566df5b61fc3899f8569fbed5625 | how to prepare for kvpy sx in 4 months without coacghing class?? best books needed | askiitians.com | 2021.39 | [
{
"text": "for physics, do not ignoreconcepts of physics by dr. h c verma. two questions in the first part of the 2014 question paper were modified questions from this book. also,principles of physics by resnick and hallidayhelps. a lot. for chemistry, do not refer any book other than thencert books. chemistry is the simplest section in kvpy. however, do refera new pattern textbook of inorganic chemistry for jee by dr. o p tandonfor the chaptercoordination compounds.especially forcrystal field splitting energy. for biology, the good part is that many large, time-consuming lessons can be skipped. analyze the previous years' question papers to get an idea. then study thencert books, ncert exemplary problems.now you're 50% ready. after you've finished the syllabus this way, readbiological science by taylor, green, and stout,cambridge university presspublication. i followed these steps and managed to get a relatively high score ( > 75 ) in the aptitude test.",
"name": "",
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8c6f95b06aee982e59ab6d3973467954 | on the number line, –15 is to the \_\_\_\_\_\_\_ of zero on the number line, –15 is to the \_\_\_\_\_\_\_ of zero | askiitians.com | 2021.31 | [
{
"text": "dear student on the number line,–15 is to the left of zero. negative integers are always comes left to the 0, so negative integers always less than 0. thanks",
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] |
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8d617e5e5b5e18976972c39beabfb49a | a closed coil having 100 turns is rotated in a uniform magnetic field b = 4.0 ω 10^-4 t about a diameter which is perpendicular to the field. the angular velocity of rotation if 300 revolutions per minute. the area of the coil is 25 cm^2 and its resistance is 4.0 ω. find (a) the average emf developed in half a turn from a position where the coil is perpendicular to the magnetic field, (b) the average emf in a full turn and (c) the net charge displaced in part (a). | askiitians.com | 2021.39 | [
{
"text": "sol. n = 100 turns, b = 4 × 10^–4 t a = 25 cm^2 = 25 × 10^–4 m^2 a) when the coil is perpendicular to the field ϕ = nba when coil goes through half a turn ϕ = ba cos 18° = 0 – nba dϕ = 2nba the coil undergoes 300 rev, in 1 min 300 × 2π rad/min = 10 π rad/sec 10π rad is swept in 1 sec. π/π rad is swept 1/10π × π = 1/10 sec e = dϕ/dt = 2nba/dt = 2 x 100 x 4 x 10^-4 x 25 x 10^-4/ 1/10 = 2 x 10^-3 v b) ϕ1 = nba, ϕ2 = nba (ϕ = 360°) dϕ = 0 (c) i = e/r = 2x10^-3 / 4 = ½ x 10^-3 = 0.5 × 10^–3 = 5 × 10^–4 q = idt = 5 × 10^–4 × 1/10 = 5 × 10^–5 c.",
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8adb006c1b950898a59157c1d36706a7 | the ratio of the sum of n terms of twm ap`s is (7n+1): (4n+1) find the ratio of their mth terms. | askiitians.com | 2021.43 | [
{
"text": "given ratio of sum of n terms of two ap’s = (7n+1):(4n+27) let’s consider the ratio these two ap’s mth terms as am : a’m →(2) recall the nth term of ap formula, an = a + (n – 1)d hence equation (2) becomes, am : a’m = a + (m – 1)d : a’ + (m – 1)d’ on multiplying by 2, we get am : a’m = [2a + 2(m – 1)d] : [2a’ + 2(m – 1)d’] = [2a + {(2m – 1) – 1}d] : [2a’ + {(2m – 1) – 1}d’] = s2m – 1 : s’2m – 1 = [7(2m – 1) + 1] : [4(2m – 1) +27] [from (1)] = [14m – 7 +1] : [8m – 4 + 27] = [14m – 6] : [8m + 23] thus the ratio of mth terms of two ap’s is [14m – 6] : [8m + 23].",
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69ebc603a7d0b689ea1c1ec9f35310b0 | if m>1, then sum of the nth power of n even number is | askiitians.com | 2021.43 | [
{
"text": "hello student, you can do this by faulhaber's formula. thanks & regards arun kumar btech, iit delhi askiitians faculty",
"name": "",
"is_accepted": false
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] |
|
33976b1eae89f0eec4515acffb7c4118 | hi i have scored 135 in jee mains and 92.2% in cbse board.....for wic nits n iits i m eligible for....n upto wic round i can get dem | askiitians.com | 2021.21 | [
{
"text": "hi saransh go to following rank to predict your rank and college http://www.askiitians.com/iit-jee/main/college-branch-predictor.html thanks and regards sahil",
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}
] |
|
9b965cd085222b1d71ca2268ef4578d8 | cells are the basic structural units of living organisms.’ explain. | askiitians.com | 2021.21 | [
{
"text": "different cells combine to form tissues and tissues combine to form organs. similarly, organs combine to form body. thus they are termed as the basic structural unit of every living organism.",
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] |
|
2bb318fc0f5c6b1d9cf1933b865b809c | please give the answer as soon as possible ,please give answer with explanation | askiitians.com | 2021.31 | [
{
"text": "correct answer: c solution : power of a pump = 1 2 ρ a v 3 to get twice amount of water from same pipe v has to be made twice. so power is to be made 8 times.",
"name": "",
"is_accepted": false
},
{
"text": "correct answer: c solution : power of a pump = 1/2 av 3 1 2 ρ a v 3 1 2 ρ v 3 = 1 2 ρ a v 3 to get twice amount of water from same pipe v has to be made twice. so power is to be made 8 times.",
"name": "",
"is_accepted": false
}
] |
|
13993336b3fda7addeedd4f5cdcc9dad | .in the displacement method of measuring the focal length of a convex lens, the length of the images in the two positions of the lens between the object and the screen is 9cm and 4cm respectively. the length of the object is a) 6.25 cm b) 1.5 cm c) 6 cm d) 36 cm | askiitians.com | 2021.21 | [
{
"text": "dear student the answer is c regards",
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] |
|
d67f54bdd78811ed8b5be8baf2314c66 | i have got 9k rank in jee advanced 2018. considering reservation for female candidates what branch and institute can i get? | askiitians.com | 2021.39 | [
{
"text": "its very diificult at this rank to get any college",
"name": "",
"is_accepted": false
}
] |
|
72050d1b186abc022e84c86fd9dbc4b6 | is it possible 2 change branch after one year in any iit | askiitians.com | 2021.39 | [
{
"text": "hi yes, it is there an all iits but rules for branch change are diffrent in different iits you can change branch afetr one year based on cgpa criteria .. 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.",
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] |
|
3239601beee91d520f41ac0720af92ea | is there any other method of finding onto into functions other than making graphs | askiitians.com | 2021.43 | [
{
"text": "a function is said to be onto if there exist an x for every y. hence to prove a function to be onto just solve the function for an x eg: f(x) = 3x + 5 let f(x) = y = 3x + 5 x = (y-5)/3 hence there exist a x for every y and hence the function is onto",
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|
bc7de8522b056bf2ac951323656cf3bc | read the following statement and explanation and answer as per the options given below : assertion : sulphate is estimated as baso base 4 and not as mgso base 4. reason : ionic radius of mg^2+ is smaller than that of ba^2+ a. if both assertion and reason are correct, and reason is the correct explanation of the assertion. b. if both assertion and reason are correct, but reason is not the correct explanation of the assertion. c. if assertion is correct but reason is incorrect. d. if assertion is incorrect but reason is correct. | askiitians.com | 2021.31 | [
{
"text": "(b) sulphate is estimated as baso base 4\nbecause of its insolubility in water. baso base 4 forms a white ppt. therefore\nreason is correct but do not explain the assertion.",
"name": "",
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] |
|
4bc462d5c18f611ed24e1333a0dfd49c | in a triangle abc, db is perpendicular on ac. ef is perpendicular on db, where e is a point on bc. fb=3 ac=10 find area aeb? | askiitians.com | 2021.25 | [
{
"text": "hello jitender this was an awesome question tbh. here also we use the formula for area of a triangle as ½ *ab*sinc. let angle fbe= p, angle eac= z. let ae=x. now area of aeb= a= ½ *x*be*sinaeb. here, be= 3secp and angle aeb= 90 – p + z (because angle eac= angle aef). so 2a= 3xsecp*sin(90 – p + z)= 3xsecp*cos(z – p)= 3xsecp(coszcosp+sinzsinp)= 3(xcosz+xsinztanp).....(1) now, drop a perpendicular from e on ac at r. so, ar= xcosz. and er= xsinz also, angle rec can be easily seen to be equal to p. so, tanp= rc/er or rc= ertanp= xsinztanp now ar+rc= 10 so xcosz + xsinztanp= 10.......(2) put (2) in (1) 2a= 3*10 or a = 15 kindly approve :)",
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] |
|
d67ca2f78a7291f034e05ffdbbb1942f | what is sporophylls define it please give me the answer? | askiitians.com | 2021.31 | [
{
"text": "the sporophtes bear sporangia that are by leaf like appendages called sporophylls.insome cases sporophylls distinct compact structures callled strobli and cones.",
"name": "",
"is_accepted": false
}
] |
|
413423ffee9c95dbbd8692af3a6e7134 | (–157) × (–19) + 157 = \_\_\_\_\_\_\_\_\_\_\_ (–157) × (–19) + 157 = \_\_\_\_\_\_\_\_\_\_\_ | askiitians.com | 2021.31 | [
{
"text": "dear student 3140: (–157) × (–19) + 157 = (2983) + 157 = 3140 thanks",
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}
] |
|
727b34ab3dfbc7e93a1d6d8f658a5312 | my air rank in category is 49000 and sr is 4900 as am from the state ap will i be able to get seat in warangal if i will in which branches i will get ? | askiitians.com | 2021.39 | [
{
"text": "hi, getiing nit warangal is quite difficult .. u shud try for some good private collage. check out the opening and closing rank for collages under aieee: http://www.askiitians.com/aieee-counselling/aieee-engineering-counsellings.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. 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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|
37bee948995cd235239795edc66601be | how many number of solutions of log[5](x-1)=log[2](x-3)?(jee) | askiitians.com | 2021.43 | [
{
"text": "there are various methods by which you can solve this problem, i''ll be following the objective approach as you are mainly concerned for jee, the fastest method for solving this problem is to consider the graph of logarithmic function!! yes you got it a decreasing curve streching from - infinity to +infinity now for log 5 (x-1) at x=2 we get the curve crossing the x axis similary for x=4 we get the other curve crossing the x axis now if you consider the poitn x=6 log 5 (x-1) = 1 and log 2 (x-1) = log 2 5 which is definitly greater than 1 if you move forward log 2 x > log 5 x so the curve will never intersect again clearly their exist only one solution!! that is between 2 and 6 although this approach may seem to you rather illogical but beilive its the fastest!!!",
"name": "",
"is_accepted": false
},
{
"text": "plot individual graphs of rhs and lhs, number of point of intersection represent the number of solution of the equation, best of luck! may god bless you!",
"name": "",
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},
{
"text": "1",
"name": "",
"is_accepted": false
},
{
"text": "x=11 only satisfies the condition. hence only one value is possible",
"name": "",
"is_accepted": false
},
{
"text": "log[5](x-1)=log[2](x-3) taking anti log, 5x-5=2x-6 3x=-1 x=-1/3 this value of x does not satisfy the domain of lag so this equation has no solution.",
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] |
|
433b649255787135e2ce01f249229e55 | i have aieee 29015 rank & stae rank is 4000 from rajasthan. how is new iiitdm kanchi, gwaliar m jabal pur. theirs degree are a bit diff. please covey the diff between traditional it degrees[ ece, cs & it] n the courses offerred by these new iiits. what else can i get at | askiitians.com | 2021.25 | [
{
"text": "dear astha, your rank in aieee is decent enough .. you can get nit surat, rourkela, jaipur.. new iiits are good but will take some time to reach to the level of other top institutes. check out the opening and closing rank for collages under aieee: http://www.askiitians.com/aieee-counselling/aieee-engineering-counsellings.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. 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.",
"name": "",
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] |
|
bf9606de26820666a5eae759aac353cb | neet 2017 i got score 155 and am sc can i get any mbbs seat? | askiitians.com | 2021.39 | [
{
"text": "no ,you may be qualified but that does not mean you can get seat in mbbs. even if you have category attached that wont fetch you any seat with such bad score .you can try with management quota if you r rich because minimum fess through it is 12 lac per year or else drop a year only if you r ready to work hard otherwise it would also be time pass. best of luck",
"name": "",
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] |
|
ad80cf2b6fa7db16437382c25a132a0f | how can you differentiate between addition and condenstation polymerization? | askiitians.com | 2021.21 | [
{
"text": "hello student addition polymers condensation polymers formed by addition reaction. formed by condensation process with elimination of small molecules likeh2o. molecular mass is a whole number multiple of the monomer. molecular mass is not whole number multiple of the monomer units. generally involve one monomer unit. generally involve more than one monomer unit. monomers are unsaturated molecules. monomer units must have two active functional groups. they are generally chain growth polymers. they are generally step growth polymers.",
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] |
|
24b513ef2d857993156ce48850997f61 | how is utm-shillong’s faculty for btech courses? how is the infrastructure? | askiitians.com | 2021.21 | [
{
"text": "dear student, as utm-shillong is a new college, so its not depeveloped yet. i will suggest you to refer to their website and look for the faculty profiles and most important is the placement records. this only will desides its actual position. thanks.",
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] |
|
b85632a220f8ff811115fd929b17aa84 | hello, i got 2100 iit rank. please help me in deciding the college and branch. i am interested in old iit's and mathematical related branches. as i can't get into computer related branches, my next preference is mechanical side branches. at iit kharagpur, seems i can get civil engineering (b.tech. 4 yr) industrial engineering (b.tech. 4 yr) manufacturing science & engineering (b.tech. 4 yr) mathematics & computing (m.sc. integrated 5 yr) i am not that much interested in civil. please help me in the remaining 3, which will be good from the carrear point. i am open for kanpur, madras, bombay, delhi and roorkee colleges too. please suggest me what will be best for me. thank you. | askiitians.com | 2021.39 | [
{
"text": "dear aman, as per your interest mathematics and computing will be thebest option to opt for but as it is m.sc. i wont prefer it that much. see at this stage you are at all not aware of the fact that what is being taught in different streams . so you shouldnot neglect civil as it has got a lot of future aspects. regarding industrial engineering and manufacturing science are not a better option than the previos two. you can either opt for civil at delhi. bombay or kanpur or mca at kharagpur as the mca is a tuff branch and you really need to work hard. no doubt mca would be the best option among these you can opt for that thank you.",
"name": "",
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] |
|
053eb1fffba2b799500cf9adbbeb190c | the normal duration of physics practical period in narayana colleges 100 minutes express this period in micro centuries | askiitians.com | 2021.43 | [
{
"text": "dear student, 1 micro centuary= century 1 century=100 years= 1 year=365 days 1 day=24 hours 1 hour=60 minutes therefore 1 mirco century= minute therefore 1 minute= microcenturies 100 minutes= microcenturies=1.9 microcenturies",
"name": "",
"is_accepted": false
}
] |
|
5f54082d3c964486123f725090d60ec8 | i am sam ,i completed be mechanical in 2017 ,then i prepared for gate 2018,2019 but i could not qualify.so now what shall i do ...should i take admission to mtech but nowdays placements are negligible for matech or should i change my way to mba since after 2 yrs it will give me some job. | askiitians.com | 2021.25 | [
{
"text": "dear student m tech from good college have placements easily. otherwise same condition with mba. follow what you want to do because after a certain point, you will loose interest if not taking accordingly",
"name": "",
"is_accepted": false
},
{
"text": "dear suraj i advise you to quit gate , because there is no point in investing 2-3 years if you are not suitable for that . you need to check market scenario first. why do you want to do mtech ? is there any job or is research work is heighly demanding in india ? but if you see on other side like mba . there are ample of opportunity in bda profile . so, i persnally advise you to go for mba or if you want to do research then go outside india . hope this helps good luck",
"name": "",
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}
] |
|
71f44d4e6fdbed1254352e730a4d32bd | my karnataka state rank in aieee is 6847 and categore (general) is 4987...what chances of getting in karnataka engineering colleges...i want to go for industrial and production engineering | askiitians.com | 2021.25 | [
{
"text": "hi, check out the opening and closing rank for collages under aieee: http://www.askiitians.com/aieee-counselling/aieee-engineering-counsellings.aspx click for barch openining and closing : http://www.askiitians.com/aieee-counselling/architecture-counselling.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. 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": "",
"is_accepted": false
},
{
"text": "http://www.askiitians.com/aieee-counselling/aieee-engineering-counsellings.aspx click for branch openining and closing : http://www.askiitians.com/aieee-counselling/architecture-counselling.aspx",
"name": "",
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|
0ce0a759402fe901bcf252672040736b | two blocks of mass 3 kg and 6 kg resp are placed on a smooth horizontal surface. they are connected by a light spring of force constant k=200 n/m.initially the spring is unstretched.velocity of 1 m/s is imparted to the block of mass 3 kg and vel of 2 m/s is imparted to the 6 kg block.the velocities are in opposite directions(such that they are moving away from each other).find the maximum extension in the spring. | askiitians.com | 2021.31 | [
{
"text": "since change in k.e + change in p.e = work done by nonconservative force+work done by external force since there is no non conservative force or external force therefore change in k.e + change in p.e=0 since the maximum compression will occur when both the block stops or final k.e =0 consider extension on left side is ''x'' and right side is ''x*'' therefore total extension is x+x* now 3x(-)+6x*(+)=0 therefore x=2x*..........................(1) since potential energy of a spring is (1/2)kx 2 therefore from change in k.e + change in p.e =0 we get finalk.e - initialk.e + final p.e -initialp.e=0 (0)-[(1/2 * 3 * 1 2 )+(1/2 * 6 * 2 2 )]+[(-1/2 * k *x 2 )+(1/2 *k * (x*) 2 )]-(0)]=0............................(2) note: also mention the sign of the direction solve equation (1) and (2) by substituting (1) in (2) and get your answer which will be x+x* plzzzzzzzzzzzz do approve if you like the answer",
"name": "",
"is_accepted": false
}
] |
|
899767da3c4aefb3ba19d0cb50b557e1 | why the solution y = -1/1+x of y' = y^2, y(0) = -1 is not valid in (-∞, -1)? | askiitians.com | 2021.21 | [
{
"text": "dear student please attach inage of the question as language is not understandable. i will be happy to help you.",
"name": "",
"is_accepted": false
}
] |
|
62660d516c9244632438114b581d4b2c | what is transparent surface ............................... | askiitians.com | 2021.43 | [
{
"text": "the plane surface which refracts light is called transparent surface ......................................................................",
"name": "",
"is_accepted": false
}
] |
|
ea6ab6c20f6395bf5ae7a93b3c4b520a | in a bar graph, \_\_\_\_\_\_\_\_ can be drawn horizontally or vertically. | askiitians.com | 2021.31 | [
{
"text": "dear student in a bar graph, bars can be drawn horizontally or vertically. thanks",
"name": "",
"is_accepted": false
}
] |
|
aab864eda7d73b1c2327e1163fefa230 | due to imbibition, the seed coat breaks because kernels swell to higher degree because kernel is made up of cellulose kernel is made up of protiens lipid and starch depends on nature of medium none of the above | askiitians.com | 2021.25 | [
{
"text": "hello student correct answer is 2. kernel is made up of proteins lipid and starch the seed coat breaks while kernels swells to higher degree because they are made up of proteins lipids and starch and they have nore imbibational capacity.",
"name": "",
"is_accepted": false
}
] |
|
e3501d5b91510ea183b308e2a2102b66 | solve this question.............................,................... | askiitians.com | 2021.31 | [
{
"text": "number of moles of silver = 200×0.1/1000 = 0.02 where 1 mole silver = 96500 coulomb so, charge needed = 0.02 × 96500 = 1930 coulomb. if strength of current is 0.1a, then, time needed to remove 50% of silver = 1930 × ½ = 0.1*t so t = 9650 second. hope it clears. if you like anser then please approve it.",
"name": "",
"is_accepted": false
}
] |
|
50e7af06f11e0d32968ccb3d6bf83e03 | a large window has the shape of a rectangle surmounted by an equilateral triangle.if the perimeter of the window is 12 metres find the dimensions of the rectangle that will produce the largest area of the window. | askiitians.com | 2021.25 | [
{
"text": "let the width and length of rectangle are y and x respectively .each sides of the triangle will be x. so total area of window s = area of rectangle +area of trianle =xy+(sqrt3)/4 .x 2 and total perimeter 3x+2y=12 =>y=(12-3x)/2 s= x(12-3x)/2 +sqrt3/4.x 2 =6x+(sqrt3/4 -3/2) x 2 ds/dx=6+2(sqrt3/4 -3/2 ) x put ds/dx=0 then we get x=12/(6-sqrt3)=4(6+sqrt3)/11 d 2 s/dx 2 =2(sqrt3/4 -3/2) <0 so s ios maxima at x=4(6+sqrt3)/11 hence x=4(6+sqrt3)/11 and y=12- 12(6+sqrt3)/11=12(5-sqrt3)/11 hence the dimensions of the rectangle are 4(6+sqrt3)/11, 12(5-sqrt3)/11 thanks & regards rinkoo gupta askiitians faculty",
"name": "",
"is_accepted": false
},
{
"text": "hi thanks & regards, arun kumar, btech,iit delhi, askiitians faculty",
"name": "",
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] |
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