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6049a5154d3730ff3d105acb15e53eef | my score in jee mains is 79 (sc category), 77% in cbse board which college will i get? | askiitians.com | 2021.43 | [
{
"text": "you may get admission into some nits, atleast you will get admission some good national engineering college. sher mohammad b.tech, iit delhi",
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|
28027880b4d7d78318d2198c4c5783ba | which option, control and instrumentation in nit,trichy or electrical in ism- dhanbad is better? | askiitians.com | 2021.43 | [
{
"text": "electrical in dhanbad",
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}
] |
|
eff9f6a5fdeaadf4794dc5c6e70e2ee3 | write the importance of moet. | askiitians.com | 2021.43 | [
{
"text": "moet stands for multiple ovulation embryo transfer technology which is a programme for herd improvement. the importance of m oet is to increase herd size in short time",
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{
"text": "moet(",
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|
8fcb2f0c25e76500c32f509128cb491f | migration of birds takes place because (a) they like to travel (b) to find abundant food (c) to meet other birds (d) none of these. | askiitians.com | 2021.21 | [
{
"text": "(b)",
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] |
|
8c08eb320b8e5659e3768d082245dd78 | a ray of light incident along x-2y-3=0 and strikes a line mirror. if equation of normal on line mirror at the point of incidence is 2x+3y+1=0 then find the equation of reflected ray. | askiitians.com | 2021.25 | [
{
"text": "hello pooja, we find the intersection of incident ray x-2y-3=0 and normal 2x+3y+1=0, which comes out to be (1, – 1). now, the reflected ray surely passes through (1, – 1). note that (3, 0) lies on x-2y-3=0. since the normal line bisects the angle b/w incident and reflected rays, so the image/reflection of (3, 0) about the normal shall lie on reflected ray. let the image of (3, 0) about normal 2x+3y+1=0 be (m, n). then, mid point of (3, 0) and (m, n) shall lie on normal, or (3+m)/2, (0+n)/2 or [(3+m)/2, n/2] lies on 2x+3y+1=0 so, 3+m+3n/2+1= 0 or 4+m+3n/2= 0 also, they are perpendicular so pdt of slopes= – 1 or (n – 0)/(m – 3)* (– 2/3)= – 1 or 2n= 3(m – 3) solving we get. m= 11/13, n= – 42/13 so, by point form of line we can write eqn of line passing thru (m, n) and (1, – 1) as 2y+31= 29x kindly approve :)",
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d3c4b63898ddf500be42b81930576dff | which is better mnit allahabad or dce | askiitians.com | 2021.39 | [
{
"text": "mnit allahabad is a very prestigious institute. it has many dept.s and each respective dept. have a very good faculties. the hostel life is very great in mnit with 5 boys hostels and 2 girls hostels. mnit focusses on the overall development of students and host four majority festivals avishkar(tech fest), culrav(cultural fest), gnosiomania (national level quiz fest), robofest(national level robo fest) . moreover the campus placements of mnit are very good and has a very good emeritius alumini .( www.indiaeducation.net/engineering/nit/nita/index.asp ) dce comes in the list of most prestigious institutes in north india. it has a very good faculty and it mainly focuses on industry specific research . coming to the hostel life, the dce has the best student life with numerous cultural fests and technical fests . one can rank the student and cultural life of dce to the topmost compared to anyother institute. infact the students can also enjoy the citylife of delhi which gives the edge over mnit.( www.dce.edu/web/sections/academics/bachelorofengineering.php ) what i suggest is don't go with the place, both are equally good. go with your dept . and field of your interest . if your rank is very good then opt for cse,electrical or mechanical. the campus placements of mnit have a edge over dce, even the campus placements of dce are very good. so if you are hoping for a very good student life then opt for dce. finally the campus placements will come into picture only if your academic performance is good .",
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{
"text": "no doubt dce. in terms of placement, exposure,etc.",
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f71035d3e4db05cc64b7c62c35f08275 | i was a very happy guy. i first took admission in some local institute and my career was ruined by these institutes. please tell me what i should do now | askiitians.com | 2021.39 | [
{
"text": "it is good for making your regular study schedule taking admission in local institute. but you need some good study material and test series to update yourself with comparison to others.it will support to make your study better. the test series help you to show your performance and gives an idea to improve yourself.",
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b4bfa3b17ec5b0f9edf28962f724aacc | i am a 12 th cbse computer science student. is it advisable to attend the biology section in kvpy exam?? | askiitians.com | 2021.39 | [
{
"text": "yes if you think you are capable enogh to sail hrough it. best of luck. . . . . . .. …. . . .. .. . .. . . . . . .",
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{
"text": "thank you sir..",
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},
{
"text": "its ok for more updates and queries you can ask as many questions as you like. thanks n best of luck again. . . . .. . . . .. . . ...",
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0322099b6f349e0c7cd901fc28c21e79 | can some one give me a rough idea of mathaematics part in iit jee? actually i m looking for the weightage of different topics in mathematics for the preparation of iit? i am confused about that on which portion in maths should i give time? | askiitians.com | 2021.31 | [
{
"text": "hi anjali, your confusion is quite natural, because iit jee is not a simple exam. but according to me if you want to crack iit jee then you have to learn all the topics. but it is obious that some topics have greater importance. algebra is the biggest part in mathematics for iit. it needs more and more practice. you can devide your time schedule as follows. following figure give you a rough analysis of mathematics for iit jee. thanks",
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f6bba175aa2a21e4a762233e938ebac4 | 2 molar ch 3 cooh and 1 molar naoh (aq) in equal volume can they form a buffer? | askiitians.com | 2021.25 | [
{
"text": "yes they can!!! it goes like this, 1 m of naoh being the limiting reactant reacts with 1 m of ch3cooh to form 1 m of ch3coona giving a equimolar mixture of ch3cooh and ch3coona which gives a buffer solution.",
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{
"text": "yes. this mixture is a good buffer.",
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eea50600a41c03e7e80be5e353204427 | which of the following are in inverse proportion? the population of a country and the area of land per person. | askiitians.com | 2021.39 | [
{
"text": "dear student it is a inverse proportion. if the population of a country increases, the area of land per persondecreases. thanks",
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f0093245e8c0665c5a21f5a9e86678f7 | plz solve this question in easy way , i wish you some this question soon for me i don`t get my correct answer | askiitians.com | 2021.25 | [
{
"text": "take a right angled triangle....oab where a=90, and angle aob is 45 and the side ab as 20. then using tan 45 we get ao also as 20. extend ao to o` so that ao`b is 30. the distance oo`is x. using tan 30 we get:- tan30=oa which is 20/ao` which is 20 + x.on solving this equation we get x as 20(√3-1). this is the distance travelled by the bird in 1sec. so speed= dist/time.so the ans is 20(√3-1)",
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959269c2678acda8dc47f052b5a1ae64 | what is electromagnatism explain with any one experiment | askiitians.com | 2021.31 | [
{
"text": "dear student please find the link below https://www.askiitians.com/iit-jee-electromagnetic-induction/ regards",
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58c965c8d5f0f7d39b4b2afc961dad16 | licl is hydrated but nacl is always anhydrous.explain why. | askiitians.com | 2021.21 | [
{
"text": "hydration energy is directly proportional to small size of cation. in licl, li + has small size than na + , thats why licl has high hydration energy. so a large amount of energy is released when licl (hydrated) is formed.",
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84ff4843b84841d2340442ad89a56000 | hi my name is arun, i got 1786 rank in obc list. what branches can i get? will i get in the new iits? by last year's opening and closing rank i won't but there is 9% more reservation. so how much of a difference will it make? | askiitians.com | 2021.21 | [
{
"text": "dear vishal, you will not get the very good branch in old iits but you can try for new iits and try for iit hyderabad if you get any core branch .... click the link below link for opening and closing rank of iit : http://www.askiitians.com/iits-2009-2010-opening-and-closing-rank.aspx cutoff in new iits check the link give below : http://jee.iitd.ac.in/openclose09.htm (this link includes the more detail analysis) for code of the cources check the councelling broucher 2009. all the best!",
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3d0744851a73eb7dcf94ba5bd2cc12ae | how would you choose between two characteristics to be used for developing a hierarchy in classification? | askiitians.com | 2021.43 | [
{
"text": "dear student gross character will form the basis of start of the hierarchy and fine character will form the basis of further steps of single the hierarchy. example: presence of vertebral column in human beings can be taken under vertebrat. presence of four limbs makes them members of tetrapoda. presence of mammary glands keeps them under mammalia. thanks",
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7b555436466aab6de191116f9d0c11d0 | please suggest a book of mathematics to study full iit jee syllabus | askiitians.com | 2021.31 | [
{
"text": "sk goel mcqs",
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{
"text": "most comprehensive references list for serious iit aspirantsbesides great teachers and/or dedicated self-study, the following reference books areinvaluable in helping you master your concepts in the subjects of physics, chemistry &mathematics and crack the iit-jee and allied exams. it is made abundantly clear to thereader that any of the above references comprise a maximum of 75% of the requirementof the student for iit-jee. in fact, the combined use of all the mentioned references willalso not make up 100% of the requirements. a number of ideas in iit-jee are beyondbooks and can be taught only by an experienced teacher. a list of references follows ascompiled by the iitian’s prashikshan kendra academic think-tank.mathematics list of referencesiit-jee standard recommended books :1. objective mathematics (2 volumes) – amit agarwal (arihant pr.)2. new pattern iit-jee mathematics – sk goyal (arihant pr.)3. iit-jee mathematics – ml khanna (jpnp publications)4. iit-jee mathematics – asit dasgupta (bharti bhuvan publications)5. iit-jee mathematics (5 volumes) – arihant prakashan6. iit-jee mathematics (5 volumes) – cengage learning7. iit-jee mathematics – tata mcgraw hills publicationsinternationally acclaimed text books useful for iit-jee :1. text book of algebra – hall & knight2. text book of trigonometry – sl loney3. text book of co-ordinate geometry – sl loney4. problems in calculus of one variable – ia maron (cbs publishers)5. problems in high school mathematics – prilepko (mir)6. problems in mathematics – berman (mir)7. combinatorics – chong8. problems in elementary mathematics – yaglom & yaglom (mir)timeless classics for all requirements :1. educative jee mathematics – kd joshi (university press)2. international olympiad problems series – maa, klamkin, andrescuu & reiman3. william lowell putnam competition problems – maa4. maa olympiad collection (45 books)5. springer books on problem solving strategies – engels & polyaphysics list of references :iit-jee standard recommended books :1. concepts in physics (volume -1 & 2) – hc verma (bharti bhuvan publication)2. ncert physics (std. xi & std. xii) (4 volumes)3. physics for iit-jee – resnick & halliday (2 volumes)4. iit-jee physics (6 volumes) – dc pandey (arihant prakashan)5. iit-jee physics (5 volumes) – b.m.sharma (cengage learning)6. iit-jee physics (5 volumes) – anurag mishra (balaji publishers)7. iit-jee physics (2 volumes) – gc agarwal (grb publishers)8. iit-jee physics – gupta & gupta (jpnp publishers)9. iit-jee physics(5 volumes) – dc gupta (disha publications)10. problems in general physics – ie irodov (cbs publishers)11. aptitude problems in physics – krotov (cbs publishers)12. 200 puzzling problems in physics – gnadig et. al. (cambridge univ press)internationally acclaimed text books useful for iit-jee :1. fundamentals of physics (6th ed. onwards) – resnick & halliday (wiley)2. concepts of physics (11th ed.) – sears, zemansky & young (prentice hall)3. fundamentals of physics – tipler & tipler (cbs)4. text books on mechanics & electromagnetism – irodov (cbs)5. introduction to mechanics – kleppner & kolenkow (mcgraw hills)timeless classics for all requirements :1. course in theoretical physics (10 volumes) – landau, liphshitz et. al.2. berkeley lectures in physics (5 volumes) – various authors3. lectures in physics (3 volumes) – richard p. feynmanchemistry list of references :iit-jee standard recommended books :1. ncert text books (std. xi & xii) – 4 volumes2. iit-jee physical chemistry – dr. rk gupta (arihant prakashan)3. essential physical chemistry – rajneesh shahi (arihant prakashan)4. concepts of physical chemistry – p. bahadur (grb / balaji)5. iit-jee physical chemistry – (2 volumes) – (cengage learning)6. iit-jee physical chemistry – anil a. alawahat (mtg publishers)7. iit-jee chemistry (3 volumes) – op tandon (grb publishers)8. iit-jee inorganic chemistry – dipak joshi (disha publishers)9. inorganic chemistry for iit-jee – jd lee (wiley)10. essential organic chemistry – rajneesh shahi (arihant prakashan)11. iit-jee organic chemistry – amit gupta (arihant pr.)12. organic chemistry for iit-jee – solomons & chauhan (wiley)13. organic chemistry for iit-jee – verma (cengage learning)14. organic chemistry for iit-jee – jagdamba singh (pragati)15. numerical problems in chemistry – p. bahadur (grb publc.)16. problems in chemistry – rajneesh shahi (arihant pr.)17. problems in chemistry – rc mukherjee (bharti bhuvan)18. reaction mechanisms – op sanyal (bharti bhuvan)internationally acclaimed text books useful for iit-jee :1. physical chemistry (3rd ed. onwards) – peter atkins (oxford)2. physical chemistry – maron & prutton (oxford)3. physical chemistry – bruce h. mahan (narosa)4. physical chemistry – behl & behl (sultan chand)6. inorganic chemistry – cotton & wilkinson (wiley)7. organic chemistry with study guide – morrison & boyd (prentice hall)8. organic chemistry with study guide – solomons & fryhle (wiley)9. solved problems in organic chemistry – schaum series10. reaction mechanisms – peter sykes (orient blackswan)11. principles of chemistry – seinko & plane (addison-wesley)timeless classics for all requirements :1. nature of the chemical bond – linius pauling (prentice hall)2. organic chemistry – ingold & e.goud (addison wesley)3. advanced organic chemistry – jerry march (wiley)internet references for mathematics, physics & chemistry :1. www.wikipaedia.com2. www.komal.hu3. www.physicsforum.com4. www.maa.orgnb: top iit-jee coaching institutes in india recommend a few of the above booksto their students and complement it with classroom lecture notes, assignments, testsand supplementary exam-oriented books published by the institute.",
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"text": "one of the book for whole syllabus is tmh . for algebra- hall and knight for coordinate-s l loney for trigonometry-s l loney",
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5495b36118b8a2e03962add2ce45af18 | dear , i am getting 34200 air in aieee and 7000 in obc catagery , could i manage to get nit . i prefer ece or mech. will i get it any of nits. | askiitians.com | 2021.43 | [
{
"text": "dear ritesh i think its very difficult to get ece or mech in any of old nit's according to last year statistics.but you may get in new nit's depending on your state.in old iit's you can get branches like civil in some iit's please go through this link http://www.askiitians.com/aieee-counselling/nits/nit-silchar.aspx please feel free to post as many doubts on our discussion forum as you can.we will get you the answer and detailed solution very quickly. all the best. regards, askiitians experts prudhvi teja",
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ea38e4013ad33a14616599880f9ec884 | if a, b and c are three sets such that a n b = a n c and a ? b = a ? c, then | askiitians.com | 2021.31 | [
{
"text": "dear student please attach the image of the question regards",
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"text": "dear student question is not clear please attach an image, we will happy to help you good luck cheers",
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f9abf3e37e2c2adbb4cfc3058aafb3d8 | 1,3,3,5,5,5,7,7,7,7,.... find 1000th term. | askiitians.com | 2021.21 | [
{
"text": "see it forms a progression of no. of times 1,2,3,4...... thus if sum is 1000 1000=n/2[ 2+ n-1)] we will get n and 1000th term will be 1=2*n",
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f0986aaf4380a486b3bd7a0ba055393f | why ionic bond in mgo is stronger compared to nacl , mgcl and nao | askiitians.com | 2021.25 | [
{
"text": "magnesium oxide (mgo) has a higher melting point than sodium chloride (nacl) which is around 2,800 degrees celcius. this is because its mg2+ and o2- ions have a greater number of charges, and so form stronger ionic bonds, than the na+ and cl– ions in sodium chloride.",
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"text": "dear student the ionic bonding is stronger than in sodium chloride because this time you have 2+ ions attracting 2- ions. the greater the charge, the greater the attraction. the formula of magnesium oxide is mgo. good luck",
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"text": "this is because its mg 2 + and o 2 - ions have a greater number of charges, and so form stronger ionic bonds, than the na + and cl – ions in sodium chloride.",
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302ee417f3096cbebb210674404cdaa3 | benzene is a unsaturated but phenol and aniline are saturated what time they are saturated why ? | askiitians.com | 2021.25 | [
{
"text": "all the above compound are unsaturated because of the presence of benzene ring which is unsaturated. thanks and regards sunil kr askiitian faculty",
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aa996b2f187f5e3a2e282e330cc79666 | scar on the seed coat through which the developing seeds are attached to fruit is called aril caruncle hilum micropyle | askiitians.com | 2021.31 | [
{
"text": "hi",
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c117376b0c0d131548ded96ea785a687 | where to find solutions for 2013 jee main online papers solutions | askiitians.com | 2021.31 | [
{
"text": "http://vidyalankar.org/jee-main-2013-paper-solution.aspx thanks & regards rinkoo gupta askiitians faculty",
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"text": "visit any coaching centres site like resonance or career point , there u will find previous years papers with solution",
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1393bb070d89469622490b60c19bf68c | solve the initial value problem. xy' = y 2 + y , y(4) = 2 | askiitians.com | 2021.43 | [
{
"text": "dear bharat dy/dx = y² +y /x dy/y2 +y = dx/x dy/y(y+1) = dx/x (1/y - 1/y+1) dy = dx/x on integrating ln y - ln (y+1) = ln x + ln c ln [y/y+1] = ln cx now y /(y+1) = cx now put x = 4, y = 2 2/3 = 4c c = 1/6 hence y/(y+1) = x/6",
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b5bdbed9c5040a9fa7df7c418c08f25d | a(z1),b(z2),c(z3) are 3 complex numbers forming a triangle on the circle |z|=1.the altitude from z1 meets the circle at z(e) and p is the image of z(e) with respect to the line bc and d is the mid point of the line pz(e) then the complex number associated with d is................... a. z1+2z2+3z3 b.z1+z2+z3 c.z1-z2-z3 d.z1+z2-z3 | askiitians.com | 2021.43 | [
{
"text": "dear naidu, the point d is nothing but the point of intersection of az and bc. please check the options/question, the coordinates of p will be z1+z2+z3, coordinates of z(e) will be (-z2z3/z1) and that of d will be 1/2(z1+z2+z3-z2z3/z1). for z: eqn of az: (z-z1)/(z'-z1') + (z2-z3)/(z2'-z3')=0 so, (e-z1)/(e'-z1') + (z2-z3)/(z2'-z3')=0 |z1|=|z2|=|z3|=|e|=1 (they lie on circle), so on simplifying using z1'=1/z1 etc => z(e)=-z2z3/z1 for d: bd is perpendicular to ad, so (z-z1)/(z'-z1') + (z-z2)/(z'-z2')=0. solve with (z-z1)/(z'-z1') + (z2-z3)/(z2'-z3')=0 to get d as (1/2(z1+z2+z3-z2z3/z1) for p: use d is mid-pt of pz(e) => p is z1+z2+z3 hope this helps. 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. 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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61aec761871dda0402ea4fe9f01a4f27 | what do you mean by acceleration due to gravity? what do you mean by acceleration due to gravity? | askiitians.com | 2021.43 | [
{
"text": "dear student the acceleration of free fall is the acceleration due to gravity. we can also say the acceleration of an object due to gravitational force of earth acting on it is known as acceleration due to gravity. thanks",
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859ce1a3b18ab2c868dce343b2ffd9ac | ece from iiit allahabad or ece from mnnit allahabad. which is better option. | askiitians.com | 2021.25 | [
{
"text": "dear student, you should definitely opt for iiit allahabad considering both the brand name and the placement records. regards,",
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e729221452971416b48d76546e90a926 | suppose an attractive nuclear force acts between two protons which may be written as f= c e^(-ke) /r^2. a) write down the dimensional formulae and appropriate si units of c and k.b) suppose that k= 1fermi^-1 and that the repulsive electric force between the protons is just balanced by the attractive nuclear force when the separation is 5 fermi. find the value of c. | askiitians.com | 2021.31 | [
{
"text": "expression of electrical force f = c * e^-kr/r^2 since e^-kr is a pure number. so, dimecsional formulae of f = dim ensional formulae of c/dim ensional formulae of r^2 or, [mlt^–2][l^2] = dimensional formulae of c = [ml^3t^–2] unit of c = unit of force × unit of r^2 = newton × m^2 = newton–m^2 since –kr is a number hence dimensional formulae of k = 1/dim entional formulae of r = [l^-1] unit of k = m^-1",
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"text": "electrical force f = c * e^-kr/r^2 since e^-kr is a pure number. so, dimecsional formulae of f = dim ensional formulae of c/dim ensional formulae of r^2 or, [mlt^–2][l^2] = dimensional formulae of c = [ml^3t^–2] unit of c = unit of force × unit of r^2 = newton × m^2 = newton–m^2 since –kr is a number hence dimensional formulae of k = 1/dim entional formulae of r = [l^-1] unit of k =",
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7e4e03e414c7186c547c9dcc39609ddf | a body is dropped from certain height and another body is dropped from same height after 2 secs. what will be the separation between two bodies 4 second after the dropping of second body. | askiitians.com | 2021.25 | [
{
"text": "you can use newton's second equation of motion here. the first ball has traveled for 6 seconds under gravity with acceleration g and initial velocity=0. the second ball has traveled for 4 seconds under gravity with acceleration g and initial velocity=0. distance between the 2 balls at the end of 6 seconds after the first ball is dropped = 1/2*9.8(36-16) = 98m",
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"text": "98 meters is right ans h1=1/2×9.8×6×6 h1=176.4 now,h2=1/2×9.8×4×4 h2=78.4 thus,the seperation between two bodies are h=h1-h2 h=178.4-78.4 h=98 meters",
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|
66bec5d08b1ddade2041fa445b389672 | for x belongs to(0,180),the equation sinx+2sin2x−sin3x=3 has how many solutions? | askiitians.com | 2021.43 | [
{
"text": "hii use the combination of sinx−sin3x to write it into format of sin2x . you will get the values of it in terms of product from where you can find out the answer",
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4c635cc3b2f3d21562735f41aeafc992 | in triangle abc cota : cot b : cot c = 30;16;9, find the ratio a;b;c = what is the ratio | askiitians.com | 2021.21 | [
{
"text": "dear frnd!!! u first get it into sin and cos !! and after den u can apply the sine formula :) :)",
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{
"text": "in a triangle cot a*cot b + cot b*cotc + cot c*cot a = 1 now, cot a/30=cot b/16=cot c/9 = x (say) put it above x^2*(30*16+16*9+9*30) = 1 x^2 = 1/894 x = y(say) therefore , cot a = 5/y , cot b = 16/y , cot c = 9/y now get , sin a = (1+cot a^2)^1/2 sin b = (1+cot b^2)^1/2 sin c = (1+cot c^2)^1/2 required ratio .",
"name": "",
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}
] |
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c4bce686d9e31c5795abcbaef61e4188 | write down the names of compounds represented btthe following formulae: (iv) kno 3 | askiitians.com | 2021.31 | [
{
"text": "dear student potassium nitrate thanks",
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}
] |
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f46efefa269d3f2cfdfbafe52feb461d | a wire fixed at the upper end stretches by length l by applying a force f. the work done in stretching is (a) 2f l (b) f l (c) f/2 l (d) f l/2 | askiitians.com | 2021.43 | [
{
"text": "sol.\n2. (d). work done by constant force in displacing the object by a distatance l =\n1/2 * stress * strain * volume =\n1/2 / f/a * l/l * a * l = fl/2",
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] |
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0312570bb3b0592d0d2e2b54e256a4d5 | find the roots of the following quadratic equations, if they exist, by the method of completing the square: 2x^2 – 7x +3 = 0 | askiitians.com | 2021.31 | [
{
"text": "dear student →2x^2–7x=-3 dividing by 2 on both sides, we get→x^2-7x/2 = -3/2 →x^2-2 × x ×7/4 = -3/2 on adding (7/4)^2to both sides of equation, we get →(x)^2-2×x×7/4 +(7/4)^2= (7/4)^2-3/2 →(x-7/4)^2= (49/16)–(3/2) →(x-7/4)^2= 25/16 →(x-7/4)^2= ±(5/4)^2 →x= 7/4 ± 5/4 →x= 7/4 + 5/4 or x = 7/4–5/4 →x = 12/4 or x = 2/4 →x = 3 or x = ½ thanks",
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}
] |
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8b7787a450e3333f119ebecaa0f261da | why is variation beneficial to the species but not necessary for the individual? | askiitians.com | 2021.43 | [
{
"text": "dear student accumulation of variations after several generations results in new set of traits required for survival. as they show results after many generations so they are not important for individual thanks",
"name": "",
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}
] |
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2ecd6d9e8110085985be6c75d5864048 | what does the oxidative cleavage of cyclic ketones in presence of acidic kmno4 yield? is it a oxo carbooxylic acid or a dibasic carbooxylaic acid??? | askiitians.com | 2021.21 | [
{
"text": "dear swapnil, description: alkenes treated with kmno4 are cleaved into carbonyl compounds. the type of carbonyl compound depends on the substitution pattern of the alkene. notes: the reaction is generally run with aqueous acid and heat. examples: notes: note that all c–h bonds attached to alkenes are oxidized to c–oh bonds, but alkene carbons with only carbons attached become ketones. note that the last example is a cyclic alkene that goes to a linear product. mechanism: the detailed mechanism for this reaction is generally not considered important for the purposes of org 1 / org 2, although the first step is dihydroxylation of the alkene. best of luck cracking iit just got more exciting,it s not just all about getting assistance from iitians, alongside target achievement and rewards play an important role. askiitians has it all for you, wherein you get assistance only from iitians for your preparation and win 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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14b295c23be15fd1ac4cfbdc3d88acac | sir
i have scored 90 in jee main under ob c.
my tamil nadu board exam result is 98.6% in top 5 subjects .
may i get admission nit tiruchi? | askiitians.com | 2021.43 | [
{
"text": "sorry. there is a very rare chances with these marks. you will not be able to get nit trichi. sher mohammad askiitians faculty",
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"is_accepted": false
}
] |
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9f0f05866df09414ef5d1d7fa341bbac | what is value of 1 2 +2 2 +4 2 +8 2 +\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ | askiitians.com | 2021.21 | [
{
"text": "i think you meant 1^2 + 2^2 + 4^2 + 8^2.... to infinity so here goes 1^2 + 2^2(1) + (2.2)^2 + (2.2.2)^2........ so we take 2^2 common 1^2 + 2^2.(1 + 2^2 +2^3 +......) we need to turn this into gp 1 + 4(1+ 2(2 + 2^2 + ….)) solving gp 1+4(1-4) =-11",
"name": "",
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},
{
"text": "final steps wrong it’s a + not a – lol ans is 21 …............................................... …............................................",
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}
] |
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71710c5c0c52f494fc2f47ade05a3606 | how to solve this question on circles please provide the solution | askiitians.com | 2021.43 | [
{
"text": "the equation of common chord is s – s 1 = 0 equation of system of circles passing through the intersection of two circles is s + λ s 1 =0 the common chord is the diameter of the circle. so the centre lies on the line s – s 1 = 0. substitute the centre (-g, -f) in this line and solve for λ .",
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] |
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80482a664ad2e339afd29d43df315375 | how many marks (percentage) should i get in jee advanced to get a rank aroud 3000 | askiitians.com | 2021.21 | [
{
"text": "atleast 120.",
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}
] |
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9ab54450ddda12655295e443deaf9714 | what is the chemical properties of halohalides | askiitians.com | 2021.39 | [
{
"text": "the chemical reactions of interhalogen compounds can be compared with the individual halogens. i nterhalogen compounds are more reactive than halogens (except fluorine). this is because x–x' bond in nterhalogens is weaker than x–x bond in halogens except f–f bond. hydrolysis: all these undergo hydrolysis giving halide ion derived from the smaller halogen and a hypohalite their molecular structures are very interesting which can be explained on the basis of vsepr theory .",
"name": "",
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] |
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b27999248d2dfd4d9b42b1a495b4c279 | i dropped my class 12th from cbse board last year due to health problem. now this year i change my board to state board so, can i eligible for iit advance for next year ???? | askiitians.com | 2021.31 | [
{
"text": "hi mayank yes you are eligible for jee advance if it is your second attempt. note that you can appear for jee advance twice in your whole life only. so i think you are. please read eligibility criteria once. visit http://www.askiitians.com/iit-jee/main/ thanks",
"name": "",
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{
"text": "@ mayank yes , for sure , u have to give the 12 th board exam and then secure 75 percent their , and then appear jee main , and u have to score the required cutoff marks , only then u are elligible for iitjee advanced . and dropping a year will not matter in iit jee advanced preparation , just u need to qualify mains and fulfill the maximum attemption limit . hope it clears now all the best ..",
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e92bffe260524d1fef7dbe8da64d4402 | if f(x)=∫ 2sinx-sin2x dx/x 3 ,x is not equal to zero, then find lim f’ (x) as x tends to zero. | askiitians.com | 2021.25 | [
{
"text": "the differentiation of the integeral, f(x)=∫ 2sinx-sin2x dx/x 3 would give f(x) simply. that is: lim x – > 0 (2sinx-sin2x) /x 3 simply expand the exapnsion of sin terms up to the x^3 terms so that it would get cancel out from the denominator x term. and then put x = 0 as the limit. ",
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56a748e58e49f0ce05eb83bfca09ad30 | what is a cistron? | askiitians.com | 2021.39 | [
{
"text": "a cistron is a segment of dna which codes for a polypeptide plz approve a cistron is a gene. the term cistron is used to emphasize that genes exhibit a specific behavior in a cis-trans test; distinct positions (or loci) within a genome are cistronic.",
"name": "",
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{
"text": "a segment of dna coding for a polypeptide is called as cistron . monocistronic structural genes are present in eukaryotes while polycistronic structural genes are present in eukaryotes.",
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] |
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70c964707bb2606f5e3e3c739ad21c40 | the maximum energy is posessed by an electron when it is present ina.nucleusb.ground statec.first excited stated.infinite distance from nucleus | askiitians.com | 2021.43 | [
{
"text": "@ sneha option no 3 turns out to be the correct option , as in ground state it cannot have maximum energy beacuse its bound by the nucleaus , and in frst exited state it will have maximum energy as when it will gain some energy , only then it will able to go to the first excited state . and infinity distance is not possible in the case of electron . hope it clears all the best ..",
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47a3569e976508c26fb8a4fccd967d69 | what is the structure of h 6 p 6 o 18 ? whatis it”s name? | askiitians.com | 2021.25 | [
{
"text": "@ pranav the compound name is metaphosphoric acid , the structure is somewhat like trigonal planer , but not totally trigonal planer , u can check the structure in ncert . in case any doubt , let me know",
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278d6196366aab5abfeb5b6d453da410 | my air in iitjee 2010 is 7389.what kind of stream do you suppose i can get in the iits? | askiitians.com | 2021.39 | [
{
"text": "hi sourav , congrats on your rank in jee. with this rank you will get a iit but not a branch of your choice . you can surely try to get a branch change done after first year which is subject to your performance in first year and availability of seats in the desired branch . feel free to post as many doubts you have we wud be happy to help. all the best !!! anshul",
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] |
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0bb406073900bbf3e8cc002045493e17 | how does oxyntic cells produce hcl??????????????????????? | askiitians.com | 2021.25 | [
{
"text": "parietal cells (also known as oxyntic or delomorphous cells) are the epithelial cells that secrete hydrochloric acid (hcl) and intrinsic factor. these cells are located in the gastric glands found in the lining of the fundus and in the cardia of the stomach.they contain an extensive secretory network (called canaliculi) from which the hcl is secreted by active transport into the stomach.",
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] |
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cdabe898dc3824a535b1ab744b44a64a | various types of enzymes explanation for eamcet | askiitians.com | 2021.43 | [
{
"text": "this is quite a vast topic and not possible to explain here. you should take the help of the study material provided by our website, it will help you in gaining clarity with the concepts and if you encounter any difficulty, you are free to discuss your problems here at forum. i request you to visit www.askiitians.com thanks and regards apoorva arora iit roorkee askiitians faculty",
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1c81b433faca7fd494445b92a4c02bf5 | two guns, situated of the top of a hill of height10 m, fire one shot each with the same speed 5 root3 m/s at some interval of time. one gun fireshorizontally and other fire upwards at an angleof 60º with the horizontal. the shots collide inair at a point p. find (i.i.t. 1996) i) the time interval between the firings, and (ii) the coordinates of the point p. take origin of the coordinates system at the footof the hill right below the muzzle andtrajectories in x-y plane. | askiitians.com | 2021.43 | [
{
"text": "shot a - the one which was launched at an angle. shot b - the one which was launched horizontally. this is the first point which you need to think about. which one of the two was launched first? think about it, they have to collide. a has to cover the same horizontal displacement as b, but with a lesser horizontal velocity as launched at an angle. if they collide, it just means that they are at the same position at the same instant of time. the two projectiles start from the same point, which means, in order to collide - their displacements must be same at a particular time instant. for horizontal displacement, we have [hor. velocity of particle 1] x [time till collision] = [hor. vel. of particle 2] x[time till collision] eqn.(1) . the horizontal motion of projectiles is uniform. all we have to do now is to substitute the values. note that the time till collision for the two particles is not the same! if for the second particle it is t then for the first particle, it is t+t where t is the time interval between the firings. sx = vxa x (t+t) = vxb x (t) vxa=velocity of a horizontally,vxb=velocity of b horizontally sy = vya x (t+t) - (0.5)(g)(t+t)^2 = vyb x (t) - (0.5)(g)(t)^2. this equation gives us t=t, after substituting the two velocities. substituting t=t from the first equation and solving, we get t=1 second interval between the firings. for the second part, we require horizontal and vertical displacements. go back to the above equations, plug in t=1/t=1. we get sx = 5(3)^0.5 and sy = -5 m the displacemtent is the final-initial coordinate, so x = 5root3 m, y = -5 + 10 = 5 m. [launched from (0,10),]",
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724e30df3baeba656faccb502006dc74 | how are positive and negative charges produced during a thunderstorm ? | askiitians.com | 2021.31 | [
{
"text": "clouds are very small droplets of water in the form of vapour. a patch of cloud develops an electric charge on it by friction. the upper layers of cloud get positively charged and the lower layers of cloud get negatively charged.",
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af166f9be2d93d582726707abf7500a7 | i'm expecting about 215 in aieee 2009, i'm also getting in srm and some colleges in gujarat. i live in gujarat , here we have svnit , but i'm facing a dilema whether i must go srm now or wait for aieee results to come. also please tell me if srm is a good college for mechanical engineering. i have a bent for mechanical engineering. | askiitians.com | 2021.31 | [
{
"text": "dear abhisek, refer to the link below for getting your expected rank : - www.askiitians.com/aieee/aieee-2009-cut-offs your rank through this lie after 10,000. so bette4r opt for srm for mechanical engineering. thank you.",
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55e66bfab2b71d45e6374bc3e4f1de38 | in a liquid medium of dielectric constant k and a specific gravity 2....? | askiitians.com | 2021.31 | [
{
"text": "dear student question is incomplete. please check and repost the complete question, you can also attach an image. i will be happy to help you.",
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a82bdd5d210ee8cb696515f9f2a9c9d3 | 1. check whether the following are quadratic equations: (i) (x + 1)2 = 2(x – 3) (ii) x2 – 2x = (–2) (3 – x) (iii) (x – 2)(x + 1) = (x – 1)(x + 3) (iv) (x – 3)(2x +1) = x(x + 5) (v) (2x – 1)(x – 3) = (x + 5)(x – 1) (vi) x2 + 3x + 1 = (x – 2)2 (vii) (x + 2)3 = 2x (x2 – 1) (viii) x3 – 4x2 – x + 1 = (x – 2)3 | askiitians.com | 2021.43 | [
{
"text": "(i) given, (x + 1)2 = 2(x – 3) by using the formula for (a+b)2 = a2+2ab+b2 ⇒ x2 + 2x + 1 = 2x – 6 ⇒ x2 + 7 = 0 since the above equation is in the form of ax2 + bx + c = 0. therefore, the given equation is quadratic equation. (ii) given, x2 – 2x = (–2) (3 – x) by using the formula for (a+b)2 = a2+2ab+b2 ⇒ x2 – 2x = -6 + 2x ⇒ x2 – 4x + 6 = 0 since the above equation is in the form of ax2 + bx + c = 0. therefore, the given equation is quadratic equation. (iii) given, (x – 2)(x + 1) = (x – 1)(x + 3) by using the formula for (a+b)2 = a2+2ab+b2 ⇒ x2 – x – 2 = x2 + 2x – 3 ⇒ 3x – 1 = 0 since the above equation is not in the form of ax2 + bx + c = 0. therefore, the given equation is not a quadratic equation. (iv) given, (x – 3)(2x +1) = x(x + 5) by using the formula for (a+b)2=a2+2ab+b2 ⇒ 2x2 – 5x – 3 = x2 + 5x ⇒ x2 – 10x – 3 = 0 since the above equation is in the form of ax2 + bx + c = 0. therefore, the given equation is quadratic equation. (v) given, (2x – 1)(x – 3) = (x + 5)(x – 1) by using the formula for (a+b)2=a2+2ab+b2 ⇒ 2x2 – 7x + 3 = x2 + 4x – 5 ⇒ x2 – 11x + 8 = 0 since the above equation is in the form of ax2 + bx + c = 0. therefore, the given equation is quadratic equation. (vi) given, x2 + 3x + 1 = (x – 2)2 by using the formula for (a+b)2=a2+2ab+b2 ⇒ x2 + 3x + 1 = x2 + 4 – 4x ⇒ 7x – 3 = 0 since the above equation is not in the form of ax2 + bx + c = 0. therefore, the given equation is not a quadratic equation. (vii) given, (x + 2)3 = 2x(x2 – 1) by using the formula for (a+b)2 = a2+2ab+b2 ⇒ x3 + 8 + x2 + 12x = 2x3 – 2x ⇒ x3 + 14x – 6x2 – 8 = 0 since the above equation is not in the form of ax2 + bx + c = 0. therefore, the given equation is not a quadratic equation. (viii) given, x3 – 4x2 – x + 1 = (x – 2)3 by using the formula for (a+b)2 = a2+2ab+b2 ⇒ x3 – 4x2 – x + 1 = x3 – 8 – 6x2 + 12x ⇒ 2x2 – 13x + 9 = 0 since the above equation is in the form of ax2 + bx + c = 0. therefore, the given equation is quadratic equation.",
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f4060206e3e96979ad36ec866b5bd754 | what is critical angle? | askiitians.com | 2021.31 | [
{
"text": "the critical angle is the angle of incidence above which the total internal reflection occurs. this is particularly common as an optical phenomenon, where light waves are involved, but it occurs with many types of waves, such as electromagnetic waves in general or sound waves.",
"name": "",
"is_accepted": false
},
{
"text": "the critical angle is the angle of incidence above which the total internal reflection occurs. this is particularly common as an optical phenomenon, where light waves are involved, but it occurs with many types of waves, such as electromagnetic waves in general or sound waves .",
"name": "",
"is_accepted": false
},
{
"text": "the critical angle is the angle of incidence above which the total internal reflection occurs. all the best for your bright future..",
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}
] |
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6fd74a298eb6cb6b17ce1f5abe1e3a99 | how can i find the equivalent resistance between the two points a and b? if possible then plz send me a photo of solution | askiitians.com | 2021.39 | [
{
"text": "in the given question the 3 diagonal resistance will have no current flowing in them and will have no value ,as the potential difference will be v a on both side of diagonal resistance. therefore,net circuit will be 3r parallel to 3r . hence, equivalent resistance will be 3r/2.",
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] |
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4e92085cd41c6c7900c31967b094f57b | if sin theta + cos theta =p and sec thet + cosec theta = q , show that q ( p square - 1) = 2p | askiitians.com | 2021.31 | [
{
"text": "q(p square -1)=sec theta +cosec theta ( (sin theta +cos theta )square -1)=1/cos theta +1/sin theta (2sin theta cos theta )=(sin theta +cos theta )2=2p",
"name": "",
"is_accepted": false
},
{
"text": "q(p^2-1)= sec theta + cosec theta((sin theta +cos theta)^2 -1) sec theta + cosec theta( sin^2 theta + cos^2 theta + 2 sin theta cos theta)-1) (sin^2 theta + cos^2 theta=1) 1/cos theta +1 /sin theta(2 sin theta cos theta) take lcm sin theta+ costheta/sin theta cos theta(2 sin theta cos theta) 2(sin theta+ cos theta) = 2p",
"name": "",
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}
] |
|
e12e62f629eeaabd25e1f428c5938cee | electric feild | askiitians.com | 2021.31 | [
{
"text": "to help visualize how a charge, or a collection of charges, influences the region around it, the concept of an electric field is used. the electric field e is analogous to g, which we called the acceleration due to gravity but which is really the gravitational field. everything we learned about gravity, and how masses respond to gravitational forces, can help us understand how electric charges respond to electric forces. the electric field a distance r away from a point charge q is given by: electric field from a point charge : e = k q / r 2 the electric field from a positive charge points away from the charge; the electric field from a negative charge points toward the charge. like the electric force, the electric field e is a vector. if the electric field at a particular point is known, the force a charge q experiences when it is placed at that point is given by : f = q e if q is positive, the force is in the same direction as the field; if q is negative, the force is in the opposite direction as the field.",
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] |
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2b05d0e01dadf5289cd885134afb68d9 | an ammetor is reads upto 1ampere its internal resistance is 0.81 ohm .to increase the range to 10 ampere the value of required shunt is | askiitians.com | 2021.39 | [
{
"text": "resistance of ammeter r g = 0.81ohm ammeter current i g = 1a. new ammeter range = 10a. shunt resistance r s =? r s = (i g /(i-i g ))r g = (1/9)*0.81 = 0.09 ohm. hope it clears. if you like anser please approve it.",
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}
] |
|
33067b01414e02dc01e3f5640497e992 | what do you mean by the glycoproteins and glycolipids ? | askiitians.com | 2021.25 | [
{
"text": "carbohydrates in the form of oligosaccharides and polysaccharides are bound to proteins are called glycoproteins . carbohydrates in the form of oligosaccharides and polysaccharides are bound to proteins are called glycolipids . glycoproteins and glycolipids project mainly into the extracellular domain.",
"name": "",
"is_accepted": false
},
{
"text": "@ samarth glycolipids are the lipids with a carbohydrate group attached , their role is to provide energy and also serve as the markers for cellular recognition . glycoproteins are the proteins that contain oligosachharides chain covalently attached to polypeptide side chain . hope it clears your doubt all the best ..",
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] |
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0448400584f7a1707cdb490c3e39353e | my marks in jee main 2014 are 87..boards percentage- 90 %..category - general.. what is the expected rank..?can i try for jiit noida to apply for cse ? n what about thapar univ. ? | askiitians.com | 2021.31 | [
{
"text": "hopes bit low but try. which board you are from?",
"name": "",
"is_accepted": false
},
{
"text": "cbse",
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}
] |
|
149ca10b8487f603740f3d8b7c233729 | subtract 3xy + 5yz – 7zx from 5xy – 2yz – 2zx + 10xyz | askiitians.com | 2021.39 | [
{
"text": "dear student (5xy - 2yz - 2zx + 10xyz) - (3xy + 5yz - 7zx) = 5xy - 2yz - 2zx + 10xyz - 3xy - 5yz + 7zx =5xy – 3xy – 2yz – 5yz – 2zx + 7zx + 10xyz = 2xy - 7yz + 5zx + 10xyz thanks",
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}
] |
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c342a4cb3e7a38641b8fafdc9db553f7 | an oscillator consists of a block of mass 512 g connected to a spring. when set into oscillation with amplitude 34.7 cm, it is observed to repeat its motion every 0.484 s. find (a) the period, (b) the frequency, (c) the angular frequency, (d) the force constant, (e) the maximum speed, and (f) the maximum force exerted on the block. | askiitians.com | 2021.25 | [
{
"text": "(a) since the motion is repeated in every 0.484 s, therefore the period of oscillation t will be,t = 0.484 s (b) to find out the frequency f of oscillation, substitute t = 0.484 s in the equation f = 1/t,f = 1/t = 1/0.484 s = (2.07/s) (s / 1/hz) = 2.07 hz from the above observation we conclude that, frequency of the oscillation would be 2.07 hz. (c) to find out the angular frequency w of the oscillation, substitute 2.07 hz for f in the equation w = 2πf, w = 2πf = 2×3.14×2.07 hz = 2×3.14×(2.07 hz× (1/1 sec)/1 hz) = 2×3.14×2.07/s = 13.0 rad/s from the above observation we conclude that, angular frequency w of the oscillation would be 13.0 rad/s. (d) to find out the force constant k, substitute 512 g for m and 13.0 rad/s for w in the euation k = mw 2",
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{
"text": "2 (a) since the motion is repeated in every 0.484 s, therefore the period of oscillation t will be,t = 0.484 s(b) to find out the frequency f of oscillation, substitute t = 0.484 s in the equation f = 1/t,f = 1/t= 1/0.484 s= (2.07/s) (s / 1/hz)= 2.07 hzfrom the above observation we conclude that, frequency of the oscillation would be 2.07 hz.(c) to find out the angular frequency w of the oscillation, substitute 2.07 hz for f in the equation w = 2pf,w = 2pf= 2×3.14×2.07 hz= 2×3.14×(2.07 hz× (1/1 sec)/1 hz)= 2×3.14×2.07/s= 13.0 rad/sfrom the above observation we conclude that, angular frequency w of the oscillation would be 13.0 rad/s.(d) to find out the force constant k, substitute 512 g for m and 13.0 rad/s for w in the euation k = mw",
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"text": "try again",
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5f9f8c335d81ef07e4db1249d431c63f | how do some micro organism grow on leather and clothes. what are the conditions which require to grow on leather and clothes | askiitians.com | 2021.43 | [
{
"text": "it depends upon the nutrient requirement, temperature amd ph. i f you provide a specific microorganisms with optimum temperature , ph and specific nutrient medium it can grow anywhere.",
"name": "",
"is_accepted": false
},
{
"text": "a microorganism or microbe is an organism which is too small to be seen by the unaided human eye. they are microscopic. the study of microorganisms is called microbiology. microorganisms include bacteria, fungi, archaea or protists and viruses.",
"name": "",
"is_accepted": false
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|
474a53925c2022fda2fff23dd328e024 | the topic: daltons law of partial pressure has many formulas which are inter-related... i am very confused.. please help me out with these topics... | askiitians.com | 2021.21 | [
{
"text": "in chemistry and physics, dalton's law (also called dalton's law of partial pressures) states that the total pressure exerted by the mixture of non-reactive gases is equal to the sum of the partial pressures of individual gases. simply apply these formula to calculate the partial pressure of individual gas and mole fraction of any gas",
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|
9e594e98893745a982062dad0e2d22cf | why in some compound double bonds show characteristics of triple bond and vice versa plzexplain in detail. | askiitians.com | 2021.43 | [
{
"text": "resonace may be",
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"is_accepted": false
},
{
"text": "resonance",
"name": "",
"is_accepted": false
},
{
"text": "the reason is resonance",
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},
{
"text": "due to resonance. .",
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"is_accepted": false
},
{
"text": "conjugation of multiple bonds",
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}
] |
|
1db39aaa72f7d838c94547ccb74c8642 | name five objects which can be made from wood. | askiitians.com | 2021.39 | [
{
"text": "table, chair, doors, boxes, handles of different tools thanks & regards, dinesh sajnani askiitians faculty",
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|
62780ec2a0482477b9b557ac3afe0a84 | are current carrying wire and current carrying solid cylinder not the same?? | askiitians.com | 2021.39 | [
{
"text": "yes they are same in the sense they have cylindrical symmetry and field is concentric circular loop",
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|
be6e75acf75a42301437ce03f9f19798 | for two molecules having same bond order stability of molecule decreases with increase in no. of unpaured electrons, so, why b 2 is more stable then he 2 ? | askiitians.com | 2021.25 | [
{
"text": "dear student if you will calculate then, bond order of b2 = 1 and bond order of he2 = 0 bond order stability hence b2 is more stable.",
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}
] |
|
59004b88c09891ab045e31188344851d | how does the electronic configuration of an atom relate to its position in the modern periodic table? | askiitians.com | 2021.31 | [
{
"text": "dear student the position of element depends upon its electronic configuration. the number of shells is equal to the period number. the valence electrons decides the group number in which it will be, elements with 1 valence electrons belong to group 1. elements with 2 valence electrons belong to group 2. thanks",
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|
dd298199393d52816545fad68d867141 | you are given kerosene, turpentine and water. in which of these does the light travel fastest? use the information given in table above. | askiitians.com | 2021.39 | [
{
"text": "dear student refractive index of kerosene = 1.44 refractive index of turpentine = 1.47 refractive index of water = 1.33 lower the refractive index faster is the speed of light in that medium. hence light will travel fastest in water. thanks",
"name": "",
"is_accepted": false
}
] |
|
13b61f043f032981ad716044142e255a | difference between stationary and progressive waves | askiitians.com | 2021.43 | [
{
"text": "dear student “a progressive wavehas the amplitude equal, over all the points, has net energy flow\" \"a standing waveis formed when two identical waves traveling in opposite directions meet and superimpose on each other. this usually happens when one wave is the reflection of the other. it has no net flow of energy\"",
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{
"text": "progressive or travelling wave: if a wave that propagates in a medium is continuous then it is progressive wave standing or stationary waves: it is a wave that oscillates in time but whose peek amplitude does not move",
"name": "",
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] |
|
fac8602f46b697d0d1d7530f88eb6594 | explain rolles theorem with graph and lagranges theorem also | askiitians.com | 2021.21 | [
{
"text": "dear student, rolle's theorem: it expresses that expecting f be differentiable on the open interim (a, b) and ceaseless on the shut interim [a, b]. at that point if f(a) = f(b), there is no less than one point c in (a, b) where f'(c) = 0. lagrange's theorem: also known as mean esteem theorem.it states that expecting f(x) be differentiable on the open interim (a, b) and nonstop on the shut interim [a, b]. at that point there is no less than one point c in (a, b) with the end goal that f'(c) = (f(b) - f(a))/(b - a). conditions for the two hypotheses is that f must be differentiable on (a,b) and constant on [a,b]. cheers!! regards, vikas (b. tech. 4 th year thapar university)",
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|
bf546306ea0158f135f1ac93260cf5c5 | hello respected iitian i study in class 8 and am intrested in software engineering ... please tell m,e what to do and what to not at this age 🙂🙂 | askiitians.com | 2021.31 | [
{
"text": "dear student you can start learning from free sources like coursera , udemy. there is no better age than this to start learning how to code, take basics of all courses , then start learning advance version. you will face difficulty in some mathematical aspects , try to learn that topics from youtube. hope this will help good luck",
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|
77f7f86964dc43c61d20fe24e5a22bdd | a sample of carbon dioixde of mass 2.45 gm at 27 degree celsius is allowed to expand reversibly and adiabatically from 500 ml to 3l .what is the work done by the gas | askiitians.com | 2021.39 | [
{
"text": "anaswer is 194 and by your method the answer is coming 60 please help me",
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"is_accepted": false
},
{
"text": "plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz approve if it heped you by clicking the yes button .............................................",
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|
0fdc0c62c22df38467d674e98268a824 | q.what is the heat given off by 5kg of water at 45 centigrade when 1kg of ice is put into it and is melted till equilibrium is maintained? in these questions while using formula h=mcdt when ice is melted then why we do (t–0) in place of dt, and why not (0–t)... where, ‘t’ is the temperature given off by water | askiitians.com | 2021.39 | [
{
"text": "dt is change in temperature water temperature changes from 45 degrees to equilibrium(fall of temperature by water so we take t-0 ice temperature changes from 0 degrees to equlibrium (as temperature of ice is not given in the question, it is taken as 0 degrees). it might be very fine if temperature of ice is given in the question. because we cant get clear solution with out this.",
"name": "",
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}
] |
|
68ee0893b4833377b274b797a26c0aa2 | describe the function of the cartilage around the trachea | askiitians.com | 2021.43 | [
{
"text": "in the trachea, there rings which are known as tracheal rings. these tracheal rings are made of cartilage and are also called tracheal cartilages. the cartilage is strong but flexible tissue. it prevents the trachea from collapsing when the trachea moves when you breathe.",
"name": "",
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{
"text": "dear student the tracheal cartilages help support the trachea while still allowing it to move and flex during breathing hope this helps good luck cheers",
"name": "",
"is_accepted": false
},
{
"text": "in the trachea , or windpipe , there are tracheal rings, also known as tracheal cartilages. cartilage is strong but flexible tissue. the tracheal cartilages help support the trachea while still allowing it to move and flex during breathing",
"name": "",
"is_accepted": false
},
{
"text": "the rings of cartilage provide stability and help to prevent the trachea from collapsing and blocking off the airways. the trachea extends from the neck and divides into two main bronchi . structurally similar to the trachea , the two primary bronchi are located inside the lungs",
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] |
|
1f01f7ef139345fe62af9ad22f49d424 | can u tell me iupac rules for iit-jee | askiitians.com | 2021.25 | [
{
"text": "dear anuvrat, there are no special iupac rules for iit-jee they are the same as mentioned in ncert we are all iitians and here to help you in your iit jee preparation. now you can win exciting gifts by answering the questions on discussion forum. so help discuss any query on askiitians forum and become an elite expert league askiitian. now you score 5+15 points by uploading your pic and downloading the askiitians toolbar : click here to download the toolbar aman bansal",
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386762338e8c875346504573c64407c8 | as i am in outstation i needed an imp information.will i be needing class 10 certificate (orginal) in iit-jee 2009 counselling? please help me. thanking in advance.b | askiitians.com | 2021.31 | [
{
"text": "dear khatri, you will be needing the 10th and 12th passing certificate with marksheets along with 2 attested copies of each. thank you.",
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}
] |
|
de7f53c9fe1df0bd781a55e583ce1d52 | for what values of the parameter 'm' is in the inequality { [(modulus of) (x 2 +m+1)/(x 2 +x+1)] < 3 } satisfied for all real values of x? | askiitians.com | 2021.25 | [
{
"text": "m belongs to (-2root2 ,2root2)",
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"is_accepted": false
}
] |
|
a2291e035642daaa6d62add06d87991f | does the moon have atmosphere and water ? | askiitians.com | 2021.43 | [
{
"text": "no, moon doesn’t have atmosphere or water.",
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}
] |
|
961bc8dec1056193d89dd33a350c3315 | why any number power is zero i one bhhbghbhbhbbjbhb | askiitians.com | 2021.31 | [
{
"text": "take x m / x m =1 using law of exponents x m-m = 1 i.e x 0 = 1",
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"is_accepted": false
},
{
"text": "in such cases it represents degree of the number or function. hope it helps. all the best. thank you.",
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|
2493fbbef8d7ed41b64bcb1198303cf0 | what is the diff. between h-bonding and dipole-dipole forces (between hcl molecules) ? | askiitians.com | 2021.31 | [
{
"text": "hi a hydrogen bond is the attractive force between one electronegative atom and a hydrogen covalently bonded to another electronegative atom. it results from a dipole-dipole force with a hydrogen atom bonded to nitrogen, oxygen or fluorine (thus the name \"hydrogen bond\", which must not be confused with a covalent bond to hydrogen). the energy of a hydrogen bond (typically 5 to 30 kj/mole) is comparable to that of weak covalent bonds (155 kj/mol), and a typical covalent bond is only 20 times stronger than an intermolecular hydrogen bond. these bonds can occur between molecules ( intermolecularly ), or within different parts of a single molecule ( intramolecularly ). the hydrogen bond is a very strong fixed dipole-dipole van der waals-keesom force, but weaker than covalent, or ionic bonds. the hydrogen bond is somewhere between a covalent bond and an electrostatic intermolecular attraction. dipole-dipole interactions, also called keesom interactions or keesom forces after willem hendrik keesom, who produced the first mathematical description in 1921, are the forces that occur between two molecules with permanent dipoles . they result from the dipole-dipolemolecules. an example of this can be seen in hydrochloric acid interaction between two therefore, in case of hcl, h bonding and dipole dipole interactions means just the same, but not always incase of other elements too. :",
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|
96fa579f11dfd606f3f84fce71559550 | in a mathematics quiz, 30 prizes consisting of 1st and 2nd prizes only are to be given. 1st and 2nd prizes are worth ₹ 2000 and ₹ 1000 respectively. if the total prize money is ₹ 52,000 then show that: the equation formed is . | askiitians.com | 2021.39 | [
{
"text": "dear student as per the condition given in the question, 30 prizes consisting of 1stand 2ndprizes only are to be given, the total prize money is₹ 52,000. then, the equation is =₹1000x +₹30,000 =₹ 52,000 thanks",
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] |
|
e3a9ee0390c87392f95593c36f39493c | why secondary growth absent in leaves. dicot leaves a b c d | askiitians.com | 2021.25 | [
{
"text": "the question is incomplete, so we request you to post the question completely to give you solutions",
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] |
|
0847ddbba9b240c221fd4dc6042048f4 | a lift is moving with uniform downward acceleration of 2m/s2 . a ball is dropped from a height 2m from yhe floor of lift. find time after which ball strike the floor. | askiitians.com | 2021.25 | [
{
"text": "2*(2m)/(7.8m/s2)=(answer)^2",
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},
{
"text": "relative acceleration= (g-a)= (10-2)m/s= 8m/s hence h=ut+1/2 a t^2 putting u=0, a=8, h=2 we get t= 0.7 s",
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},
{
"text": "this question can be solved by the concept of relative motion acceleration of ball relative to lift = acceleration of ball relative to ground - acc. of lift with respect to ground = -10j - (- 2j) {note: we have used j component and it is in downward direction therefore it is negative} = -8j now using the relation s = ut + 1/2 a t^2 u=0 s=2m a = +8m/s^2 (the sign here used is positive because the acceleration -8j will help in moving the ball downward) 2 = 1/2 (8) t^2 t = 2 ^1/2 (root 2) seconds",
"name": "",
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},
{
"text": ".5sec",
"name": "",
"is_accepted": false
},
{
"text": "1/2^1/2",
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"is_accepted": false
}
] |
|
ae85de499090e1a96340d13e571ce59f | amino group in the benzene group can be protected by a. arylation b. salfoniation c. chlorination d. acetylation | askiitians.com | 2021.43 | [
{
"text": "dear student the answer is d regards",
"name": "",
"is_accepted": false
},
{
"text": "acetylation is a chemical reaction that is called ethanoylation in the iupac nomenclature. it describes a reaction that introduces an acetyl functional group into a chemical compound. the opposite chemical reaction is called deacetylation – it is the removal of the acetyl group.",
"name": "",
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|
e91a89441a802e1f2a4a9260e1a1bddb | sir , is this true this year govt. is introducing 10 new nit's. sir if so please give detail of the same.and till how much rank for general category they would take. | askiitians.com | 2021.31 | [
{
"text": "hii the inclusion of 10 new nits will definitely increase the number of seats by atleast 5000-6000 out of which 50% definitely will come in the quota of general students for other queries related to iit jee you can contact us at 0120-4616500 or you can email us at support@askiitians [dot]com",
"name": "",
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|
01d577efc4daa205e329ba3470da289c | sir/mam, i have got an project to be prepared on linear programming.i’m unable to access that. can u plz help me?? | askiitians.com | 2021.21 | [
{
"text": "yes please write your question , we will surely help you. sher mohammad faculty askiitians b.tech, iit delhi",
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}
] |
|
bb99458f576cffec290c63e7da633c10 | what c.g.p.a require to fill kvpy exam. | askiitians.com | 2021.39 | [
{
"text": "the percentage required is 80%, you should convert your cgpa accordingly. thanks & regards sher mohammad faculty askiitians",
"name": "",
"is_accepted": false
}
] |
|
8b65d97837e255f8bfcd1e8024ebf00a | the decomposition of an electrolyte when electricity is passed through it, is called (a) conduction (b) coating (c) electrolysis (d) electro refining | askiitians.com | 2021.25 | [
{
"text": "(c)",
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|
69fca6ce3a00ceb2670c89ea268ed82c | dear sir this was posted long back by my friend to me i gave him the solution but he said that was wrong ; i gave him answer as (b) and (c) this is multiple choice question | askiitians.com | 2021.39 | [
{
"text": "dear student, the eccentricity of an ellipse is defined as the ratio of the distance between any point in the ellipse and the focus and distance between point and a fixed line called directrix. e = distance between p and f/distance between p and line d (directrix) formula for eccentricity : formula for calculating e is b 2 = (a 2 )(e 2 -1) so e 2 - 1 = b 2 /a 2 or e 2 = b 2 /a 2 +1 e = √(b 2 /a 2 +1) eccenticity = square root of square of semi minor axis divided by squares of semi major axis",
"name": "",
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},
{
"text": "eccentricity of hyperbola = 1+b 2 /a 2 = e ..............1 eccentricity of conjugate = 1+a 2 /b 2 = e c 2 ..................2 (e c = eccentricity of conjugate hyperbola) from these two equatns , e c = e/(e 2 -1) 1/2 ......................3 f(f(e)) = e (n = 2 even) f(f(f(e))) = e/(e 2 -1) 1/2 (n = 3 odd) now , if n = even then integral ede = e 2 /2 lim from 1 to 3 =4 (a) if n = odd then integral ede/(e 2 -1) 1/2 lim 1 to 3 = (e 2 -1) 1/2 lim 1 to 3 =2root2 (d) hence option a,d are correct .... approve if u like my ans",
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|
c447b7fedeb859aed56f300528059b6d | the emf of th cell ag|agcns 0.1m kcns||agno3(0.1 m)|ag is 0.589 volt at 18 c .what will be the solubility product of agcns? | askiitians.com | 2021.31 | [
{
"text": "dear anurag, solubility product the concentrations of ions in saturated solutions have a relationship to one another somewhat like the relationship between the concentration of h 3 o + and oh - in water. best of luck cracking iit just got more exciting,it’s not just all about getting assistance from iitians, alongside target achievement and rewards play an important role. askiitians has it all for you, wherein you get assistance only from iitians for your preparation and win exciting gifts by answering queries in the discussion forums. reward points 5 + 15 for all those who upload their pic and download the askiitians toolbar, just a simple click here to download the toolbar…. so start the brain storming…. become a leader with elite expert league askiitians thanks aman bansal askiitian expert",
"name": "",
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"text": "10^(-12.137)",
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|
6e33a7807743474693fe1ec5c42d2c6d | sir could u pls solve the circled questions in this image the answers are 3,3,2 (correct options) but pls tell me the procedure | askiitians.com | 2021.21 | [
{
"text": "answer for question 87 . will try to post answers for other question im separate posts…...............................",
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{
"text": "answer for question 88........................................................................................",
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|
aec1865cc73c23c70607b4f642413bee | college | askiitians.com | 2021.43 | [
{
"text": "dear shivangi, try to get the best college for engg otherwise no use... best of luck..!!!! 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 : click here to download the toolbar.. askiitians expert sagar singh - iit delhi",
"name": "",
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|
f25df2a4e093c715b8c75e3ce7dd68a5 | find the coordinates of the vertices of a square inscribed in the triangle with vertices a(0,0), b(2,1), c(3,0); given that two of its vertices are on the side ac. | askiitians.com | 2021.25 | [
{
"text": "the answer wud be 3,3/4 15/4,3/4 3,0 and 15/4,0. it cudnt be explained as it is figure based.",
"name": "",
"is_accepted": false
}
] |
|
e0ca7d01af822c2c6d2961e90a910cbd | alkali metals are: (eamcet 1985 engineering) 1) oxidising agents 2) dehydrating agents 3) reducing agents 4) all the above | askiitians.com | 2021.21 | [
{
"text": "alkali metals are very good reducing agent ans : ( 3 ) thanks & regards akshay meena, askiitians faculty m.tech, iit kharagpur",
"name": "",
"is_accepted": false
}
] |
|
6cd46eea48a7d30897856258bf5cc014 | find a value of x to the base c for the variable f(x)= x^2+x+5+sin(22/7 x) takes the smallest value | askiitians.com | 2021.43 | [
{
"text": "dear student please explain “a value of x to the base c” “the variable f(x) “",
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|
65b9dabf8b35ef4f5a0cda7bee20b6b3 | charge q2 is at the circular path with radius r, workdone in carry on a charge q1 once around this equipotential part would be \_\_\_\_\_\_\_\_\_\_\_ | askiitians.com | 2021.25 | [
{
"text": "dear student, for the part of equipotential part , potential must be zero. the electric field will also be zero. cheers!! regards, vikas (b. tech. 4 th year thapar university)",
"name": "",
"is_accepted": false
}
] |
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