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7273d198619684ee256d8aeee6eb9b02 | on a hot summer night, the refractive index of air is smallest near the ground and increase with height from the ground. when a light beam is directed horizontally, the huygens principle leads us to conclude that as it travels, the light beam | askiitians.com | 2021.31 | [
{
"text": "on a hot summer day night the refractive index of air is smallest near the ground and increases with height from the ground. when the light beam is directed horizontally the huygens principle leads to the conclusion that it will bend bend upwards",
"name": "",
"is_accepted": false
},
{
"text": "as per huygen’s principle, each point on wave behaves as a source. so, from such hypothetical source, rays would emerge in all directions. the rays, inclined upwards, are travelling from rarer to denser medium and hence, would bend towards normal i.e. become vertical. while, rays inclined downwards, are travelling from denser to rarer. hence, these rays would bend away from normal i.e. would become horizontol. so, in totality, beam bends upwards.",
"name": "",
"is_accepted": false
}
] |
|
716cabb5ef10581dd0cbd161b7d7d35d | what is the domain of the function (tanx)^1/2. answer................ | askiitians.com | 2021.39 | [
{
"text": "tan(x) ≥ 0general solutiion: x ɛ [nπ, nπ + π/2) primary solutiion: x ɛ [0, π/2)aplending a stupid line because answer should not be less than 100 characters.",
"name": "",
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},
{
"text": "sorry for the bad formatting. i was using a mobile phone.tan(x) ≥ 0general solutiion: x ɛ [nπ, nπ + π/2) primary solutiion: x ɛ [0, π/2)appending a stupid line because answer should not be less than 100 characters.",
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|
17f398c15d5272bfc79e21a2ccee3360 | for redox reaction zn + no 3 - = zn 2+ + nh 4 + in basic medium, coefficient of zn amd oh - in the balanced equation respectively are ? | askiitians.com | 2021.31 | [
{
"text": "separate them into half reactions foirst and then balce it. zn ------> zn 2+ + 2e- and no3- ------> nh4+ + 3h2o no3- + 10h+ +8e- ------> nh4+ + 3h2o in order to cancel the electrons add the zn and no3- chemical eqns. in such way that they get cancelled.",
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] |
|
7eee7aa972d7d97157c80a52be0fef6a | if f(x) =
r x2
1=x2 sin(
p
t)dt, then nd the value of f0(1). | askiitians.com | 2021.25 | [
{
"text": "dear student, the format is not clear, please repost the answer again. askiitian faculty.",
"name": "",
"is_accepted": false
},
{
"text": "dear student, the format is not clear, please repost the question again. askiitian faculty.",
"name": "",
"is_accepted": false
}
] |
|
7268a0bec1149a5c3043fb22ebb71d33 | the velocity of a particle decreases uniformly from 20 m per sec to zero in 10s as shown in figure .if the mass of the particle is 2kg then identify the correct statement | askiitians.com | 2021.25 | [
{
"text": "dear student there is no figure attached. kindly check and repost it. i will be happy to help you. regards arun (askiitians forum expert)",
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"is_accepted": false
}
] |
|
312f8d890a1f6eca4cc8d13e43b622e4 | i dont get topic of area under curvin askiitians what i do pleas suggest meeee | askiitians.com | 2021.43 | [
{
"text": "refer to the book “play with graphs” arihant publication it has wide variety of graphing techniques and transformations and all possible graphs ranging from easiest to difficult.. once you get command over graphing functions you can calculate area under curve by definite integrations",
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] |
|
84a5a04fa2d7b3e501a176c25c96b9d5 | if ((a+b)^n - (2^n - 3^n)) is divisible by ab, then find (a-b)^2...pls help with atleast one step..it will do..thanks.. | askiitians.com | 2021.25 | [
{
"text": "using binomial theorem we get (a+b)^n= a^n + b^n + ab*k (where k is an integer assuming a and b are integers, we have simply taken ab common from remaining terms) now i think it should be (a+b)^n - (2^n + 3^n) bcoz then we can write it as a^n + b^n + ab*k – (2^n + 3^n) = (a^n – 2^n) + (b^n – 3^n) + abk or (b^n – 2^n) + (a^n – 3^n) + abk. now if (a,b)= (2, 3) or (3, 2) then clearly the term is divisible by ab. in both cases (a – b)^2= 1. so just check the ques once again and let me know if you r still facing any issue... kindly approve :))",
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|
e1fdf75b8c7d99d41c2dc9cf8fd6ae29 | respected sir/mam, i wanna know whether or not will i be able to get into nit nagpur mechanical stream through state quota with air 32172 and state rank 2123 . please reply asap | askiitians.com | 2021.21 | [
{
"text": "dear manpreet, getting nit nagpur at this rank is very difficult. best of luck plz approve the answer...!!!! cracking iit just got more exciting,it’s not just all about getting assistance from iitians, alongside target achievement and rewards play an important role. askiitians has it all for you, wherein you get assistance only from iitians for your preparation and win exciting gifts by answering queries in the discussion forums. reward points 5 + 15 for all those who upload their pic and download the askiitians toolbar, just a simple click here to download the toolbar…. so start the brain storming…. become a leader with elite expert league askiitians thanks aman bansal askiitian expert",
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7607f7ee7e0fa10402a05b2b5d6c5b1c | solve 4{x} = x+ [x], x belongs to /r. the answer is x=0, 5/3. but i am getting xe [1,2). please explain with steps! | askiitians.com | 2021.25 | [
{
"text": "x-{x}=[x]-----> something we know; =>x-[x]={x} that being said, 4{x}=x+[x]=>4(x-[x])=x+[x] ie, 3x=5[x].---------(1) now, since rhs of (1) should be an integer(coz [x] is an integer), we can say x takes a fraction value as y/3 (so that 3x is integer),y is set of integers. now substituting x as y/3 in (1) we get,the eqn y=5[y/3]=> y/5=[y/3] =>rhs is integer,(same freaking logic) therefore y should be an multiple of 5 thus we can narrow down as y being either 0 or 5 . now we can say that x as y/3 =>x=0,5/3. please upvote this if it helps, tc",
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},
{
"text": "perfect ! :)",
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}
] |
|
d1d14612a33bd284d54de2c9d0710cce | what's the required minimum +2 percentage to get into iit besides the iit exam? | askiitians.com | 2021.25 | [
{
"text": "it is clearly given in the brochure that your aggregate of 11 and 12 should be 60% and it is lesser for sc and st please approve my answer!!",
"name": "",
"is_accepted": false
},
{
"text": "you should get 60% in pcm and aggregate in 10+2 exams in order to be eligible for jee and aieee.best of luck. please approve my answer by clicking yes if you liked it.",
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"is_accepted": false
}
] |
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e017b71953cca61d326e0305921549f2 | good evening eshan sir... this is yester day solution sir. how sir electric field is independent r. generally e = (1/4π€0) (q/r^2). i did not understand explain sir. | askiitians.com | 2021.43 | [
{
"text": "dear raju, it is not true that electric field always follows the relation . this is true only for electric field due to a point charge, or due to a uniformly charged solid sphere or spherical shell. in fact electric field due to an infinitely large charged conducting plate with charge per unit area is which is also independent of . in case of infinitely large wire, it is hence it depends upon the distribution of charges in the given situation. here we are asked about the value of ‘a’ such that electric field is independent of . using the gauss law, we arrived at an expression of electric field in terms of . now this has a constant term in addition to a term having dependence as . but it is given that field must be independent of . so if the coefficient of this term becomes zero, then the electric field would only have the magnitude . hence we have put it to zero to find the value of ‘a’. hope that helps.",
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|
a23d0b44f689fbde0b9bc61908eb17a8 | what is the importance of different biogeochemical cycles in the nature? (asi ) | askiitians.com | 2021.31 | [
{
"text": "dear student these cycles help in an efficient recycling of useful minerals like- nitrogen, phosphorus, carbon through various biotic and abiotic pathways and also helps in the steady flow of minerals to every part of an ecosystem.",
"name": "",
"is_accepted": false
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{
"text": "biogeochemical cycles are important because they regulate the elements necessary for life on earth by cycling them through the biological and physical aspects of the world. biogeochemical cycles are a form of natural recycling that allows the continuous survival of ecosystems. biogeochemical cycles are named for the cycling of biological, geological and chemical elements through earth and its atmosphere. the cycles move substances through the biosphere, lithosphere, atmosphere and hydrosphere. cycles are gaseous and sedimentary. gaseous cycles include nitrogen, oxygen, carbon and water. these elements cycle through evaporation, absorption by plants and dispersion by wind. sedimentary cycles include the leeching of minerals and salts from the earth's crust, which then settle as sediment or rock before the cycle repeats. repetition of the cycles is important. plants absorb carbon dioxide and release oxygen, making the air breathable. plants also acquire nutrients from sediment. animals acquire nutrients from plants and other animals, and the death of plants and animals returns these nutrients to the sediment as they decay. the cycle then repeats and allows other living things to benefit. the simplest example of biogeochemical cycles at work includes water. water evaporates from the oceans, condenses as clouds and precipitates as rain, which returns the water back to the earth in a cycle.",
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08c1caed3187032ac4af8c10502013fd | 1)how is wave is reflected in organ pipe at open end. from rarer or dencer. 2) does the total energy of an element of progressive wave constant 3) does the total energy of an element of stationary wave constant | askiitians.com | 2021.31 | [
{
"text": "dear student please ask the one question per post please find the link below https://www.askiitians.com/iit-jee-wave-motion/vibrations-of-air-column-in-pipes/ regards",
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|
9c8a2e6b5becaf38aebfa8d45c4f0f95 | i m getting around 23o marks in iitjee and 190 marks in aieee .... suggest me the best at this???? | askiitians.com | 2021.21 | [
{
"text": "i think you should go with iit rather any nit beacuse of the reputation. but if you want any specific branch which is not available at any old iit, then i would like you to go to any good nit. or else, prepare well for bitsat if you want some reputed institute like iit.",
"name": "",
"is_accepted": false
},
{
"text": "dear pragya, i think nit will be good,as u can get ur fav. branch here!!!!!!! but in iit, this time it will be tuff!!!! good luck!!!!!!!! plz. approve by clicking 'yes' given below!!!!!!!!! plz. plz. plz.~!!!!!!!!!",
"name": "",
"is_accepted": false
},
{
"text": "u will get any reasonable course in iit and a course of your choice in nit.so its upto ur interest regarding any particular course.i think u should go by ur interest and not by others.all the best.",
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"is_accepted": false
}
] |
|
21c462be099caff3b20ba5b497128763 | define the terms c o d and b o d? | askiitians.com | 2021.21 | [
{
"text": "hello student biochemical oxygen demand (bod) :the measure of the total contamination caused by compounds which can be oxidised in the presence of microorganisms. the bod is taken as a realistic measure of water quality – clean water would have a bod value of less than 5 ppm whereas highly polluted river water could have a bod value of 17 ppm or more. chemical oxygen demand (cod)is the amount of oxygen required to oxidise and stabilize the organic and inorganic matter present in a certain volume of water sample.it is measured by using a chemical oxidising agent.",
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}
] |
|
c06f9cd32f079be598a8566f3f461061 | please give me the solution for this question as soon as possible | askiitians.com | 2021.25 | [
{
"text": "solution: i = ∫ dx / (sinx + secx) = ∫ [ cosx / (cosxsinx + 1) ] dx = ∫ [2cosx / 2(cosxsinx + 1) ] dx = ∫ [ ( cosx + cosx + sinx - sinx) / (2cosxsinx + 2) ] dx = ∫ [ ( cosx + sinx) / (2cosxsinx + 2) ] dx + ∫ [ ( cosx - sinx) / (2cosxsinx + 2) ] dx = - ∫ [ (cosx + sinx)/( -3 - 2cosxsinx + cos²x + sin²x ) ] dx + ∫ [ ( cosx - sinx) / (2cosxsinx + 1 + cos²x + sin²x ) ] dx = - ∫ [ (cosx + sinx)/( -3 + (cosx - sinx)² ) ] dx + ∫ [ ( cosx - sinx)/ ( 1 + ( cosx + sinx)² ) ] dx = - ∫ [ 1 /( -3 + (sinx - cosx )² ) ] d(sinx - cosx) + ∫ [ 1/ ( 1 + (sinx + cosx)² ) ] d(sinx + cosx) = - ∫ [ 1/( -3 + (sinx - cosx )² ) ] d(sinx - cosx) + ∫ [ 1/ ( 1 + (sinx + cosx)² ) ] d(sinx + cosx) = - ∫ [ 1/( -3 + t² ) ] dt + ∫ [ 1/ ( 1 + u² ) ] du = ( 1/√3 ) ln | (t + √3) / (t - √3) | + arctgu + c = ( 1/√3 ) ln | (sinx - cosx + √3) / (sinx - cosx - √3) | + arctg(sinx + cosx) + c thanks & regards sumit majumdar, askiitians faculty ph.d,iit delhi",
"name": "",
"is_accepted": false
},
{
"text": "dear student, we can have the following result: now if i asume, u = sinx, so we get: regards sumit",
"name": "",
"is_accepted": false
}
] |
|
6e73d49505279746a891d136fa97a473 | an x molal solution of a compound in benzene has mole fraction of solute equal to 0.2, find the value of x ? in solution of this question why you took 1000gm ? | askiitians.com | 2021.31 | [
{
"text": "mole fraction woud be: 0.8 hnce. molar mass of benzene is 78, therfore, m = 1000*0.2/0.8*78 m = 3.20555",
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"is_accepted": false
}
] |
|
84174563e59f3e4fcc4a46e27df3ded4 | dear askiitian team, im in class 9. i'm aiming for double digit rank in jee advanced 2024. i go to tution only for mathematics and my teacher has only studied math till 12th class . he makes the subject very interesting. i used to hate math about 2 years ago now it's my favorite subject . he teaches only ncert level. i've made a friendly psychological connection with him just like aristotle and alexander . he tells me that he can't teach me iit mathematics i study science by myself but i can't solve problem books like rd sharma or hc verma of class 9th i can solve only 65% of the problems i can't even make him clear rd sharma problems for me.i think i can't leave his guidance but i've started doubting my ability . my parents wanted that i should join aakash srinagar but i rejected because i won't get time for self study. in kashmir there are only few big buck coaching aakash and career point. should i join coaching, will they admit me 3 months after admission deadline ? but can i stick to my tutor? i wanna crack iit so bad, should i solve some other books. please help | askiitians.com | 2021.31 | [
{
"text": "dear student askiitians also offer coaching for the same kindly go on the official site and register yourself. in the mean time kindly find the link below for the books recommend https://www.askiitians.com/important-books-iit-jee.aspx https://www.askiitians.com/school-exams/cbse/class-9.html https://www.askiitians.com/school-exams/cbse/class-10/books.html regards",
"name": "",
"is_accepted": false
},
{
"text": "mock test. mock test is a best way to practice for the online entrance exam. ... time management. time management is the key to achieve your goal. ... know exam pattern & syllabus. ... study material & books. ... solved previous year question papers. ... stay healthy. ... revision.",
"name": "",
"is_accepted": false
},
{
"text": "concentrate on theory section and then solve question ifyou can then download some good books for foundation such as pearson publication",
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"is_accepted": false
}
] |
|
a02bd48a32b5b9082e05d15a1252b528 | sir how to get the last years iit jee paers along with solutions? | askiitians.com | 2021.21 | [
{
"text": "dear reenal you can see papers iit jee 2009 solutions at askiitians.com. here we give you the detailed step by step answers to iit jee 2009 question papers. http://www.askiitians.com/iit-jee-2009-solutions/ you can download the papers from the link paper 1 : http://tr.im/ignh paper2 : http://tr.im/ignq please feel free to post as many doubts on our discussion forum as you can. if you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. we are all iitians and here to help you in your iit jee preparation. all the best. regards, askiitians experts badiuddin",
"name": "",
"is_accepted": false
}
] |
|
f84cec09cb5bafa2fa8ab0fdf95a7fa3 | the electrical conductivity of zinc oxide increases on heating. give reason. | askiitians.com | 2021.43 | [
{
"text": "zinc oxide is originally a white powder. when heated up, it turns yellow but does not decompose and when it is removed from the heat it gradually goes back to its original white colourthe reason for the yellow colour is that a minute amount of oxyegen evaporates from the lattice (70 ppm) the small number of zinc atoms produce lattice defects that give rise to the colourin its normal form, zinc oxide is an n type semiconductor, ie conductivity by electrons. this conductivity is thought to be due to a stoichiometric excess of zinc ions which occupy interstitial locations in the crystal lattice. happened due to heating",
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}
] |
|
4ac81f17f13bad16b492158f550e80f4 | an example of a useful somaclonal variation is shikonin dye production short crop duration in sugarcane male sterility white rust resistance in crucifers | askiitians.com | 2021.31 | [
{
"text": "the correct option is 2. somaclonal variation is the variation seen in plants that have been produced by plant tissue culture. chromosomal rearrangements are an important source of this variation. somaclonal variation is not restricted to, but is particularly common in, plants regenerated from callus. the variations can be genotypic or phenotypic, which in the latter case can be either genetic or epigenetic in origin. typical genetic alterations are: changes in chromosome numbers (polyploidy and aneuploidy), chromosome structure (translocations, deletions, insertions and duplications) and dna sequence (base mutations). a typical epigenetics-related event would be gene methylation.",
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|
2853b2c3d7c965f9d66fe3262374e818 | plz ans. the question which is there in the attachment. plzzzzzzzzzzzz. | askiitians.com | 2021.31 | [
{
"text": "it is true statement. plasma b cells are effector cells because they produce antibodies.",
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"is_accepted": false
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] |
|
4fdb21ac8052327e3eaee9e6394ecfb7 | a charge q is uniformly distributed over the volume of uniform ball of mass m and radius r which rotates with angular velocity w about an axis passing through the centre. find magnetic moment. | askiitians.com | 2021.43 | [
{
"text": "m/l=q/2m",
"name": "",
"is_accepted": false
}
] |
|
d3557f257092a059d1b7d52572454929 | by selling a dinner set for rs4320 a crockery dealear made a profit of 8%. find the cp of dinner set? | askiitians.com | 2021.25 | [
{
"text": "let cost of dinner set = x then profit = (4320- x) *100/x but in question, profit is 8% hence (4320 -x)*100/x = 8 4320*100 - 100x = 8x 108 x = 432000 hence x = 432000/108 x = 4000 rs hence c.p. is 4000 rs",
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}
] |
|
fb10d377ea46f2e7bd5bda88dcd6704a | integrate 1÷√1+√tanx dx pls help me to solve this problem | askiitians.com | 2021.39 | [
{
"text": "dear student please folow the below link https://www.askiitians.com/forums/integral-calculus/find-the-following-integral-dx-1-tanx-1-2-lim\\_107352.htm good luck cheers",
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|
666747df1e6e86083315f2c3a8dc9988 | the line x=c cuts the triangle with vertices(0,0),(1,1), (9,1) in two regions. for the area of the regions to be the same,c must be equal to? | askiitians.com | 2021.21 | [
{
"text": "dear student just use determinants formula to find out are and then if put x = c, just equate area same. then you will find quadratic in c. hence c will be 15 and 3 but as x = c = 15 will be outside of this triangle. hence c= 15 will be eliminated. hence correct andwer should be c= 3",
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}
] |
|
b4105a75c31d9eb4f54e84f6a8a41970 | a body projected vertically from the earth reaches a height equal to earth's radius before returning to the earth. the power exerted by the gravitational force is greatest a at the highest position of the body. b at the instant just before the body hits the earth. c it remains constant throughout d at the instant just after the body is projected. kindly explain why option b and d are different.acc to me the power should be the same in both cases | askiitians.com | 2021.25 | [
{
"text": "power exerted by a force p = f.v the power exerted by the gravitational force is greatest and the instant just before the body hits the earth. hence option b is correct",
"name": "",
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|
7902cd30e12ed204e1503ad7964c83d1 | sir, i have came to know about the ree(roorkee engr. exam) exam once conducted by prestigious institute roorke currently as iit roorkee. can you please tell me where i can get those question papers for practising. | askiitians.com | 2021.25 | [
{
"text": "dear student, those are not avialable only however you can get the same in old books...",
"name": "",
"is_accepted": false
},
{
"text": "dear student, please do not repeat the questions....",
"name": "",
"is_accepted": false
},
{
"text": "u can get those papers free at tcy online ... also ur performance will be compared based on ur performance...",
"name": "",
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}
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|
6082d44fe4b2ea893167ec5d3df658cb | what does that means every bond represents hydrogen ?? | askiitians.com | 2021.43 | [
{
"text": "@ shriya i cannot intrepret your question . which bond you are talking about , there is no attachment also . so, kindly recheck the question and do get back with the full question again . we will happy to help you suitably .. waiting to hear from you again good luck ..",
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|
f0c8c67218139a1c920d28eb734f6dbc | find integration of this trigonometric expression (cos7x—cos8x)/(1+2sin5x) | askiitians.com | 2021.25 | [
{
"text": "note that cos 7x – cos 8x = ( cos 7x + cos 3x ) – ( cos 8x + cos 2x ) + ( cos 2x – cos 3x ) = ( 2 cos 5x cos 2x ) – ( 2 cos 5x cos 3x ) + ( cos 2x – cos 3x ) = ( 2 cos 5x )( cos 2x – cos 3x ) + ( cos 2x – cos 3x ) = ( cos 2x – cos 3x ) ( 2 cos 5x + 1 ) divide it by 1+2cos5x to get integrand= cos2x – cos3x. now integrating we get (1/2)sin2x – (1/3)sin3x + c.",
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|
557ddd8b730351cc39632c5cf388e7da | sir, im a student of class 11th i got 88% marks in 10th board r my percentage r enough for iit and how should i start preparing for iit | askiitians.com | 2021.31 | [
{
"text": "dear pranjal, ya, your score is quite enough for eligibility. the minimum requirement is just of 60% in your 12th and 10th boards. you can join www.askiitians.com as askiitians is india’s first educational portal offering completely online-interactive-realtime resources and video solutions for preparation of iit-jee and other engineering entrance exams. here you will get online-interactive-realtime learning sessions, problem solving sessions, strategy sessions, counseling sessions from iitians. there are many packages available in askiitians.com but i wud advise you to join course for one year .i.e. rip1 and for more information regarding packages, click here : www.askiitians.com/packages.aspx thanks and all the best !!!!",
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5a522be40cf8152712bdf3844051b456 | if the plane cuts coordinate axis at a(2,0,0) b(0,3,0) and c(0,0,6) then find the area of the triangle abc??? | askiitians.com | 2021.39 | [
{
"text": "right off the bat we need to discover ab and ac. abdominal muscle = b – a = (0,3,0) - (2,0,0) = (- 2,3,0) air conditioning = c – a = (0,0,6) - (2,0,0) = (- 2,0,6) presently, we realize that the territory of the triangle abc is half of the range of the parallelogram shaped by ab and ac and furthermore we realize that the region of that parallelogram is figured as: ab × ac , so registering that cross item we have: abdominal muscle x ac = (18 )i –(- 12)j + 6k 18i+12j+6k extent is ((18^2 + 12^2 + 6^2)^1/2)/2 => ((324 + 144 + 36)^1/2 )/2 => (504)^1/2/2",
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"is_accepted": false
}
] |
|
f135e81e0b6b5abf3a05e65b772f653f | period of cos(sin x)................................................................................................................ | askiitians.com | 2021.21 | [
{
"text": "dear student use the formasin(bx−c)+dasin(bx-c)+d a=1a=1 b=1b=1 c=0c=0 d=0 time period = 2pi/|b| =2pi",
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"is_accepted": false
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] |
|
d5bdfd4c3fa98d445a43b45951b289f4 | a ball is thrown from a field with a speed of 20m /s at an angle of 45 with the horizontal. at what distance will it hit the field again | askiitians.com | 2021.21 | [
{
"text": "dear akshat horizontal range = u² sin 2 /g = 20² sin(90°)/10 = 400/10 = 40 metres hence at a distance of 40 metres it will hit the ground. regards arun (askiitians forum expert)",
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"is_accepted": false
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] |
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69837b2bf3f32bafebc9e0aede321730 | the main function of clitellum is a coccon formation b locomotion c excretion d copulation | askiitians.com | 2021.25 | [
{
"text": "dear student, the clitellum is part of the reproductive system. the clitellum is a thick, saddle-like ring found in the epidermis (skin) of the worm, usually with a light-coloured pigment. to form a cocoon for its eggs, the clitellum secretes a viscous fluid. the main function of clitellum is cocoon formation. in earthworms, the clitellum can only be seen when the worm is sexually mature. so, the correct answer is 'cocoon formation' thank you",
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] |
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b69cec07138a99635ba1780c46a58bbb | sir i am in 12 now and i will take jee main exam in jan 2021. i am obc candidate and my is not alive. my family income is less than 1 lpa. i am aspiring for iit bombay. how much fees i have to give in iit bombay and how much hardwork i have to do as compared to other students please tell and guide me | askiitians.com | 2021.31 | [
{
"text": "dear student fees details are given on their official website regarding preparation it must be top class practice must be extra ordinary all the best regards",
"name": "",
"is_accepted": false
},
{
"text": "dear student regarding preparation, you really need to study hard (and smart). don’t worry about fees as there is 100% tution fee remission for students whose family income is less than 1 lpa. there are a lot of scholarship available to help students financially.",
"name": "",
"is_accepted": false
},
{
"text": "dear student just crack jee ,,,,,, you can get ;oan from bank you just dont need to bother about money ,,,,,,,,, study hard,,,,,,,,,,,,,,,,,,,,,,,,,,,,",
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"is_accepted": false
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] |
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4616baf91c22038efa97f901b26811e6 | direction (q35 to q39): in the following questions, the assertion and reason have been put forward. read the statements carefully and choose the correct alternative from the following: (a) both the assertion and the reason are correct and the reason is the correct explanation of the assertion. (b) the assertion and the reason are correct but the reason is not the correct explanation of the assertion. (c) assertion is true but the reason is false. (d) the statement of the assertion is false but the reason is true. 35. assertion: when pure breed tall plants are crossed with pure breed short plants, all the plants in f1 progeny are tall. when the tall plants of f1 progeny are crossed, short plants re-appear in f2 progeny. reason: traits are independently inherited. | askiitians.com | 2021.31 | [
{
"text": "answer: explanation: (a) both the assertion and the reason are correct and the reason is the correct explanation of the assertion.",
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] |
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66102e69129202d3a2549a32bcb38b91 | i am very weak in maths especially vectors and 3-d geometry.........i’m planning to crack jee 2017...ho to improve my maths?? | askiitians.com | 2021.31 | [
{
"text": "do practice or",
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"is_accepted": false
}
] |
|
f55c34893fc081b06470d4782b715f7a | which of the following is a most effient device to eliminate particulate matters from the industrial emissions cyclonic seprators ttrajectory seprators electrostatic precipiratator scrubber | askiitians.com | 2021.25 | [
{
"text": "hello student correct answer is 3. electrostator precipitator electrostatic precipitator is the most efficient device to eliminate the submicron particulates from the industrial emission.in this device the particulates are first charged and then collected on an electrode or hanging pope. then these are removed by hanging the pipes with hammers.",
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] |
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1fd09be2bc1e3d52854405f0c3ca1ef5 | in each of the following pairs, which number is to the right of the other on the number line? (e) – 6, 6 | askiitians.com | 2021.25 | [
{
"text": "dear student (e) 6 lies to the right on the number line (6 > -6) thanks",
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}
] |
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6377b5101f75e8d493be3b5895a2bcbe | abbreviations is shortened form of a word or phrase. unced is also an abbreviation. it stands for union natural conservation of endangered and their development united nation conference on environment and development united natural conservation of endangered species and development union nation conference of endangered species and developmant | askiitians.com | 2021.25 | [
{
"text": "hello student correct answer is 2. united nation conference on environment and development. unced – >united nation conference on environment and development",
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"is_accepted": false
}
] |
|
cc31775442400e5175bae7ed61335cdd | what is the mass of the precipitate formed when 50ml of 16,9% solution of agno3 is mixed with 50ml of 5.8% nacl solution? | askiitians.com | 2021.43 | [
{
"text": "the reaction is: agno3 + nacl =>>> nano3 + agcl 16.9*1000/50*169.87=1.98823 5.8*1000/*5058.5 = 0.198290 therfore the ppt. formed would be => 0.198290 m",
"name": "",
"is_accepted": false
}
] |
|
620eeacb18178cbf58cf974245a581d9 | faraday's second law at electrolysis is related to ?? | askiitians.com | 2021.43 | [
{
"text": "when the same quantity of electricity is passed through different electrolytes, the masses of the elements liberated or deposited are in proportion to the chemical equivalents of these elements. faraday's laws are very useful for the determination of electrochemical equivalents of different substances.",
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] |
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9b169768af6ddf34ecdab38876a8f5af | i got 1884 in aieee and state rank 34 in wb in overall.can u suggest what college and what subject can i get? | askiitians.com | 2021.31 | [
{
"text": "dear soumyadip, congratulation for getting such a good rank. you should be aware by now that state resevation quota has been removed from aieee. through this rank you will be getting good enough college and branch of you choice. refer to the link below for last year cutoff details : - www.askiitians.com/aieee/aieee-counselling thank you.",
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}
] |
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8290aa912f9b7171197a56f46e1dd6f7 | if f ‘(x) = a sin x + b cos x and f ‘(0) = 4 , f(0) = 3 , f(pi/2) =5 find f(x) | askiitians.com | 2021.21 | [
{
"text": "ans: hello student, please find answer to your question below .........(1)",
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}
] |
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7150279030da054e85e8139f0be146ff | i am planning to do long term this year for neet 2018 exam... how long should i study everyday from now on and what is the best institute for that?? | askiitians.com | 2021.39 | [
{
"text": "already answered",
"name": "",
"is_accepted": false
}
] |
|
0f7158538eefc3bfffee3d98f02bf994 | how "hocl" and "hclo" is dissociated in a aqueous medium ?? | askiitians.com | 2021.25 | [
{
"text": "both r 1 n the same compound",
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"is_accepted": false
}
] |
|
e15e76390fa1c8e27bdee47ed279cd1a | the coulomb force between the two charges q and q` placed in air at separation `r`is f. if the system is taken in a medium of dielectric constant e. what will be new force? | askiitians.com | 2021.39 | [
{
"text": "the new fore is given by f/k where k is dielectric constant of medium in which they are takenso new force will given by f/e",
"name": "",
"is_accepted": false
}
] |
|
2b996b0c53292f41e5b8e4ab53f49901 | bromine can be liberated from kbr solution by the action of a. iodine solution b. chlorine water c. sodium chloride d. potassium iodide | askiitians.com | 2021.43 | [
{
"text": "hello student chlorine is stronger oxidizing agent than bromine and therefore, chlorine water will liberate bromine from kbr solution",
"name": "",
"is_accepted": false
}
] |
|
36ce2218747477051c6470d0d5a1cb63 | a boy standing on a long railroad car throws a ball staight upwards.the car is moving on the horizontal road with an acceleration of 1m/s 2 and the projection velocity in the vertical direction is 9.8m/s. how far behind the boy will the ball fall on the car? | askiitians.com | 2021.31 | [
{
"text": "hi, till the time , ball is in the hand of bo , it will have same velocity & accl. of car. & after it is thrown , it will continue in the horizontal velocity with accl. zero , which it has just before leaving the car let , the velocity of car at the moment of throwing of ball = u time taken by ball to come back again on the ground = 2(vertical velo.)/g = 2 sec during this time distance travelled by ball, sb = ut during this time distance travelled by the car sc = ut + 1/2 a t^2 it shows that ball will fall at a distance 1/2 a t^2 behind the boy 1/2 a t^2 = 1/2 *1 * (2)^2 = 2 m.",
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] |
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b05feec3889b751541a87abe191d0b1b | three isotopes of an element have mass numbers m, (m+1) and (m+2). if the mean mass number is (m + 0.5), then which of the following ratio of number may be accepted for m, (m+1) and (m+2) in the order (1) 1 : 1 : 1 (2) 4 : 1 : 1 (3) 3 : 2 : 1 (4) 2 : 1 : 1 | askiitians.com | 2021.25 | [
{
"text": "(2) 4 : 1 : 1 i am confused u just check it out",
"name": "",
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},
{
"text": "hey buddy its (2)4:1:1 (2*1+1*1)/6=0.5 i m definetly sure",
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}
] |
|
e9f0dd1f561c591b3d7a4b3051a781b2 | what is soil what are different layers of soil what are different types of soil | askiitians.com | 2021.39 | [
{
"text": "the soil is found in layers, which are arranged during the formation of soil. these layers called horizons, the sequence of layers is the soil profile. the layers of soil can easily be observed by their color and size of particles. the main layers of the soil are top soil , subsoil and the parent rock. each layer has its own characteristics",
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},
{
"text": "soils are complex mixtures of minerals, water, air, organic matter, and ... there are different types of soil , each with its own set of characteristics. dig down deep into any soil , and you'll see that it is made of layers , or horizons (o, a, e, b, c, r).",
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5f6567a33532deb8e2be861f6d7b727a | plz tell me about satellite dna,micro satellites, mini satellites and repetitive dna. how are they all related | askiitians.com | 2021.31 | [
{
"text": "dear nihala satellite dna consists of very large arrays of tandemly repeating, non-coding dna . satellite dna is the main component of functional centromeres, and form the main structural constituent of heterochromatin. a microsatellite is a tract of repetitive dna in which certain dna motifs (ranging in length from 2–5 base pairs) are repeated, typically 5–50 times. microsatellites occur at thousands of locations in the human genome and they are notable for their high mutation rate and high diversity in the population, a minisatellite is a tract of repetitive dna in which certain dna motifs (ranging in length from 10–60 base pairs) are typically repeated 5-50 times. minisatellites occur at more than 1,000 locations in the human genome and they are notable for their high mutation rate and high diversity in the population. repeated sequences (also known as repetitive elements, or repeats) are patterns of nucleic acids ( dna or rna) that occur in multiple copies throughout the genome. regards",
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] |
|
506ddd05219b95cd650c68f73d06eb37 | cos47÷sin43+sin72÷cos18-2cos square 45 evaluate the value | askiitians.com | 2021.25 | [
{
"text": "cos47/sin (90-47)+sin72/cos(90-72) -2(1/2) since cos (90-a) =sina and sin (90-a) =cosa 1+1-1 =1 answer",
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"is_accepted": false
}
] |
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d6e06f3b11f3fb7b25aae0319c6b25ed | which is better nit jaipur nagpur warangal in facilities also attendence any rule of strict attendence? | askiitians.com | 2021.31 | [
{
"text": "warangal is better",
"name": "",
"is_accepted": false
},
{
"text": "nit warangal ofcourse...",
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}
] |
|
0cdec5fa4a4b2aba968033de1722ed28 | 46. very fine particles scatter more of \_\_\_\_\_\_\_\_\_\_\_\_ colour. | askiitians.com | 2021.39 | [
{
"text": "answer: c explanation: blue",
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"is_accepted": false
}
] |
|
8bdb6ea4422f8eb0323cfa53a79c10c4 | sir, my air in aieee 2009 is 29462{overall}. what r my chances in nit rourkela | askiitians.com | 2021.31 | [
{
"text": "hi . first of all i want to congratulate u . see for ur rank to get a seat in nit rourkela is a bit difficult . u cant get seat in good dept. like cse, ece ,eee , mech. ,chemical etc. u can get a seat in bio medical eng.",
"name": "",
"is_accepted": false
},
{
"text": "hi now its a matter taht whether there are any seats available in the nits or not. the top branches probably must have been filled up by now. in the fourth counselling, the not so desired branches might have a place , so u can try ur luck. there is no surity that u'll get a place, so always keep ur other options open. best of luck!!",
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}
] |
|
b50a9e8ce4d901f2cb19efa9a269d6f3 | how to solve these problem in attach image.it’s on indicator | askiitians.com | 2021.31 | [
{
"text": "dear student image is not proper. please check and repost the question with clear and proper image. i will be happy to help you thanks and regards",
"name": "",
"is_accepted": false
},
{
"text": "dear student the image is not clear please upload the fresh image feel free to ask querry we will happy to help you. good luck cheers",
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}
] |
|
a10fdfd19969ba1206e268b7b4505353 | what best branch can i get at 2973 rank | askiitians.com | 2021.43 | [
{
"text": "hi sarthak , congrats on you rank !!! you will have an option of following branches in old iit's at this rank . materials & metallurgical biochemical engg. & biotechnology(m.tech 5 yr dual) chemistry (m.sc. integrated 5 yr) naval architecture mining engineering civil engineering chem. out of the above chem. and civil are good options but finally base your decision on the branch of your choice . you might have a better chance in new iit's though . clcik on the below link for more details . 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 !!!! anshul",
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},
{
"text": "sir,shall i prefer chem in guwahati or mech in hyderabad or gandhinagar",
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}
] |
|
609cae2454e6e2e90fbbd013e421f35d | a metal scale does not give correct value at all temperatures explain | askiitians.com | 2021.39 | [
{
"text": "use correct one",
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"is_accepted": false
}
] |
|
f34b1e817b09c71e72d3fda99d34a580 | why active mass of solid is taken 1??????????? | askiitians.com | 2021.43 | [
{
"text": "dear anuj, for unit concentration of reactants rate of the reaction is equal to rate constant or specific reaction rate. at equilibrium the rate of both forward and backward reactions become equal and after achieving equilibria, the concentration of reactants and products remains constant as shown in figure. active mass is the molar concentration of the reacting substances actually participating in the reaction. hence active mass = number of moles/volume in litres and active mass of solid is taken as unity. we are all iitians and here to help you in your iit jee preparation. all the best. if you like this answer please approve it.... win exciting gifts by answering the questions on discussion forum sagar singh b.tech iit delhi",
"name": "",
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},
{
"text": "sir i know what is mean by active mass but i hav doubt that for solids why it is taken unity[1]????????????????????",
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}
] |
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e05161e18ab2d37217fe770123648f7c | i want to know about neet 2018-im in also coaching.what is the best objective book for biology,chemistry &physics ??and best concept book for physics and chemistry ??in hindi language please.... | askiitians.com | 2021.31 | [
{
"text": "dear sam, for neet exam the first and the foremost thing is the word by word going through the ncert book of all the three subjects. strictly follow the syllabus prescribed by cbse neet. download previous year papers and you will get the idea about the common view of the question setter. hope this will work out",
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}
] |
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4b335745ef0a114789c811fa581b0d3a | how do good animal husbandry practices benefit farmers? | askiitians.com | 2021.31 | [
{
"text": "dear student good animal husbandry practices are beneficial to the farmers in the following ways: (i) improvement of breeds of the domesticated animals. (ii) increasing the yield of foodstuffs such as milk, eggs and meat. (iii) proper management of domestic animals in terms of shelter, feeding, care and protection against diseases. which ultimately helps the farmers to improve their economic condition. thanks",
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}
] |
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b6c2ca531d6d8272e36b2bcee5c58c4f | if 2 tan b + cot b=tan a the prove that cot b= 2 tan( a-b) | askiitians.com | 2021.43 | [
{
"text": "2tan(a - b) 2{(tana - tanb)/(1+tana.tanb)} now substitute for tana = 2tanb + cot b, 2{(2tanb + cotb - tanb)/(1 + (2tanb + cotb).tanb)} 2{(tanb + cotb)/(2 + 2tan^2b)} (using cotb*tanb = 1) {(tanb + cotb)/(1 + tan^2b)} cotb{(tan^2b + 1)/(1 + tan^2b)} (using cotb*tanb = 1)",
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] |
|
690af0c239f5a3d180e04481ef60ddc7 | calculate no. of waves made by electron in thrbit 5 bohr orbit... | askiitians.com | 2021.21 | [
{
"text": "two possible ways are there: either electron goes directely from 3 rd to 5 th or by 3 rd to 4 th and then 4 th to 5 th . so total number of waves made by the electron =3 here we shold note that bthe enegy neede in both the path would be same(energy is conserved0",
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] |
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96146cd8a9d4606f959d2f098875172f | moved to class xi......... started with tuitions......... will joining coaching next year be of any help?? is pradeep book nice for 11th? | askiitians.com | 2021.21 | [
{
"text": "yes u need to join some coaching center and prepare for jee. first i ask u to comlete with 11th syallabus asap and start practising some standard recommended books for iit jee. clear u r concepts frm them and practise alot. work hard and u'll definitely get through exam. you can clear it all the best -- regards ramesh 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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] |
|
a32cd1643f89e2dbcb7729b31c08eb41 | proved that acosa+bcosb+ccosc=2asinbsinc please help sir | askiitians.com | 2021.31 | [
{
"text": "use properties of triangles. let area of triangle be ar. then bcsina= casinb = absinc = 2ar thus write all sin terms in terms of ar. and also use a/sina = b/sinb = c/sinc = k.",
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] |
|
1a4b0f7ea938a91c524ce2c76ae6bca4 | is there ny criteria to change the course in second year in iit.if i got addmission in computer or ny other branch can i change it to mechanical in second year? | askiitians.com | 2021.31 | [
{
"text": "dear ranjan yes you can change the branch . each indivisual institute has their own rule for branch chage.refer official site of iits for more detail. for iit bombay rule of change of branch is ..... students are eligible to apply for change of branch/ programme after completing the first two semesters. only those students who complete the prescribed course credits without backlog during the first two semesters of 4-year b.tech./5-year m.sc./dual degree programmes and have secured a cumulative performance index (cpi) of 6.5 or more shall be eligible to apply for change of branch/programme. the following rules/guidelines will be used for considering applications for change: 1. top 1% of total number of students admitted in the year will be permitted to change branch without any constraints. 2. for others, change will be permitted strictly on merit basis. students without fail grades and backlogs, and with cpi > 6.5 will be eligible to apply and can give their choices. 3. the request for change (in the order of merit) for a student s1 from branch a to branch b will be considered if the (a) strength of branch b does not exceed the sanctioned strength (b) number of students on roll in branch a does not fall below 85%. (the request of s1 will be reconsidered – again in the order of merit – if s1 does not violate (b) above due to another student getting transferred to branch a.) 4. if student s1 is not permitted to change from branch a to b (due to (b) above), any other student s2 with cpi less than s1 will also not be permitted to change to branch b. 5. the request for change of branch from a student belonging to sc/st category may be considered as special cases by the chairman, senate, on merit. 6. all branch transfers can be effected only once at the beginning of the second academic year. no application for change of branch during the subsequent academic years will be entertained. 7. students will be permitted to change from b.tech. to dual degree programme in the same department at the end of third and fourth semesters subject to the department’s recommendation. please feel free to post as many doubts on our discussion forum as you can. if you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. we are all iitians and here to help you in your iit jee preparation. all the best. regards, askiitians experts badiuddin",
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] |
|
f737d07e710d75ab459df53cc6baae87 | what do we mean when we say its +m effect is greater than in its -i? | askiitians.com | 2021.31 | [
{
"text": "the mesomeric effect or resonance effect in chemistry is a property of substituents or functional groups in a chemical compound . the effect is used in a qualitative way and describes the electron withdrawing or releasing properties of substituents based on relevant resonance structures and is symbolized by the letter m . the mesomeric effect is negative ( -m ) when the substituent is an electron-withdrawing group and the effect is positive ( +m ) when based on resonance and the substituent is an electron releasing group. examples of -m substituents: acetyl (iupac ethanoyl) - nitrile - nitro examples of +m substituents: alcohol - amine - benzene thanks & regards rinkoo gupta askiitians faculty",
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}
] |
|
081b87530a447266adbbaa4479800de9 | please solve this ∫sin 3 x.cos 2 x dx limit is from -1 to 1 | askiitians.com | 2021.43 | [
{
"text": "ans:hello student, please find answer to your question",
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}
] |
|
af137d3dcc37b4cddeeed0df085ba314 | i am sankalp. i am studying in class 11th. i want a good study planner for iit-jee 2011 | askiitians.com | 2021.31 | [
{
"text": "dear sankalp, you will have to work hard for thorough study which you can do ..and alweys revise the material after coming back from school or tutions ... it wont take much time but it helps alot in remembering things for long time. make a time table and cover the topics from 11th and 12th . join some coaching institute, test series etc & forget all your other activities for a year!!!. do not do a lot of books…..clear your concepts and give them more time to practice question. do hard work and believe in yourself… i hope that helps. please feel free to post as many doubts on our disucssion forum as you can. if you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. we are all iitians and here to help you in your iit jee preparation. all the best . regards, askiitians expert amit - it bhu",
"name": "",
"is_accepted": false
}
] |
|
085112ee10d51b1afa9b7dc041f5f1d5 | sir i got 7597 iit jee2012 rank . so which branch in which iit i could expect | askiitians.com | 2021.43 | [
{
"text": "u can get only agriculture, p.pharma etc. branches.",
"name": "",
"is_accepted": false
}
] |
|
fbdb6b6f705a398537f2f12d23ee0731 | show that the fn f given by f(x)= x 3 -3x 2 +4x , (x belongs to r) is strictly increasing . | askiitians.com | 2021.21 | [
{
"text": "see in these type of question first differentiate it and then if the equation obtained after differentiating is positive for all x then it is increasing. so after dy/dx we get 3x^2-6x+4 and it can be written as 3x(x-2)+4 now we see as we take x greater or equal to 2 the equation is positive and also when we take x less than or equal to 0 the equation is also positive. now the only values of x left is 0",
"name": "",
"is_accepted": false
},
{
"text": "see in these type of question first differentiate it and then if the equation obtained after differentiating is positive for all x then it is increasing. so after dy/dx we get 3x^2-6x+4 and it can be written as 3x(x-2)+4 now we see as we take x greater or equal to 2 the equation is positive and also when we take x less than or equal to 0 the equation is also positive. now the only values of x left is 0",
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}
] |
|
cfd03ab864c13ed5204f92ec1203bc5f | <p>do u think can i crack iit just 9 months left</p> <p> </p> | askiitians.com | 2021.21 | [
{
"text": "if you have taken some coaching, well and good but apart from that study the normal books too. stage i: start with ncert in physics, chemistry, and maths.(do ncert thoroughly) stage ii: physics: hc verma 1 and 2 chemistry: any book of your choice (arihant, etc will do) maths: coaching maths questions or arihant series in maths stage iii (only if time permits otherwise revise stage 1 and 2) this stage is not compulsory. but if you want to increase your problem solving skills go for it. now it’s a rigorous problem solving stage. do not do any more theory. physics: in my view d.c.pandey is a good book chemistry: inorganic- p.bahadur organic: paula bruce/solomen physical: p.bahadur/o.p.tandon maths: s.l.loney for coordinate geometry & plane trigonometry try doing these three steps… you basic concepts will be surely cleared. one month before jee try solving random problems from the above books. repeat the solved problems. it’s a secret to solving tough problems. if you follow these books then i think that you will surely crack the taunting iitjee this topic is very controversial. those who find these books not suitable please follow the books which suit you. all the best -- regards ramesh 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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] |
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3c99cd5d1797f9c8447cc4492d5cb1aa | can you hear the sound on the moon ? explain. | askiitians.com | 2021.21 | [
{
"text": "we cannot hear the sound on the moon because sound requires a material medium to travel. on the moon there is no atmosphere and sound cannot travel in vacuum.",
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] |
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d1e12222c14f20d5245c014735852d60 | options 1/35 1/14 1/10 1/5 | askiitians.com | 2021.43 | [
{
"text": "ans: hello student, please find answer to your question below option (3) is correct.",
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6e4c74df693ec8e8e163657184afb4ec | state true or false-`gas vacuoles are called pseudovacuoles because they doesn`t have tonoplast.` | askiitians.com | 2021.39 | [
{
"text": "pseudovacuole is a gas filled vacoule usually present in cyanophyceae or blue green algae.it is thought that it helps in providing buoyancy to the cell for floating on the water surface.",
"name": "",
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},
{
"text": "so whether the statement is true or false? please answer soon.",
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] |
|
427b669bb68002571028eb5f79042bc2 | the value of ‘a’ for which the polynomial a(x^3) – {under root(a^2 -18)}x + 10 represents a real and rational polynomial is -7 under root(29) under root(-29) all of these+ | askiitians.com | 2021.43 | [
{
"text": "a^2 -18 >=0 (a+ 3root2) (a – 3root2) >=0 thus range for a is, a = 3root3. which satisfies all the 3 options. thus, all of these.",
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113cc89616f874cc21a13a22aa98a76d | the line 2x-y+1=0 is tangent to the circle at the point (2,5) and the centre of the circle lies on x-2y=4 then what is the radius of circle? | askiitians.com | 2021.31 | [
{
"text": "let eq of circle is x^+y^+2gx+2fy+c=0. and according to question point (2,5) is a point on circle on which tangent drawn so it is satisfied in this equation. after put it we get. 4g+10f+29+c=0. and. centre (-g,-f) satisfy in given equation x-2y=4. so. 2f-g=4. and the perpendicular distance from 2x-y+1=0. from centre of circle is radius. so. -2g+f+1/root5=root over g^+f^-c. now here three equation and three variable then solve it and finally answer is 3root5",
"name": "",
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] |
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92f39287dfd5594c94545a9ff6609dec | y=log[x+√(1+x^2)] then show that (1+x^2) d n+2 y /dx n+2 + (2n+1)x d n+1 y / dx n+1 + n 2 d n y / dx n | askiitians.com | 2021.31 | [
{
"text": "dear student please check and repost to the question as there is no equal sign in to be proved statement. you can also attach image. i will be happy to help you.",
"name": "",
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6efced75479ba0a98c987cd60fb67592 | is nri's eligible for iit and aieee???? what is the min. %age needed fo iit?? can only self study help in beating iit?? | askiitians.com | 2021.39 | [
{
"text": "yes they are eligible for iit and aieee, as the iit rules are modified last to last year. now, you need to have atleast 60% in 10+2 or equivalent to appear in the jee exam, the entrance test for iits. look, now a days , the pattern of iit question paper is now as it was 10 to 20 years before. now as the mains exam is not there so they cant ask you lengthy questions. now they focus on the fundamentals rather than rote lerning and 2 -3 year constant learning of concepts. the questions which are asked in last two years jee exam are relatively easy and mostly based in you 12th class knowledge. but the reasons behind the success of the coachings are the momentum which creates in your mind and soul around the year. continues tests, quizes and the mentoring from the qualified faculty helps you to reach you goal more accurately and perfectly.",
"name": "",
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},
{
"text": "yes nris are eligible for iits and aieee and infact there exists nri quota in aieee.you have to fill in the form that you are nri and take the normal exam procedure. for iit a minimum of 60% in 12th board exams are needed which is exactly the same as the indian nationals. yes ofcourse you can clear iit-jee thru self study.but you have to be very very focused and organised and planned to sail thru this.around three lakh students take iit-jee with full preparation and only first 8 thousand get thru it so you can see its not a cakewalk.you should definetly keep in touch with someone who have idea of this exam if you want to do it by your own at home.you can also take online help during the preparation.every concept should be clear and questions practiced for better accuracy and speed in the exams. askiitians offers multiple packages, catering to the needs of iit jee aspirants across the world.keep yourself uptodate with an online studycirle like we sort of develop at askiitians.",
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] |
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11971b4696631a4d3a3b5d7a301230a7 | prove that int[ from (0) to(2pi) ][1 / 1+3(cos x)^2]dx = pi | askiitians.com | 2021.25 | [
{
"text": "ans- baha put 3(cos 2 x )=3[(1+cos2x)/2] =3/2(1+cos2x) = 3/2 + 3/2cos2x. then cos2x = (1 - tan 2 x) / (1+tan 2 x). [ (1 + tan 2 x)dx/[5/2(1+tan 2 x) + 3/2(1 - tan 2 x)] ] 2[ sec 2 x dx/ ( 5 +5tan 2 x + 3 - 3tan 2 x) 2[ sec 2 x dx / ( 8+ 2tan 2 x)] [ sec 2 x dx/ (4 + tan 2 x)] then let tanx = t => sec 2 x dx = dt [ dt/(4+ t 2 )] integrate ur ans will com",
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}
] |
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44398fe80418d978e253fcaa90fc4663 | should i take integrated with state board or cbse with coaching in fiitjee | askiitians.com | 2021.25 | [
{
"text": "take cbse board... as state board are little tough . you have to focus mainly on jee. cbse board is scoring.",
"name": "",
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}
] |
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9a75f1b0c847b2a985846e86e2244962 | three particles have charges 20 mc each and they are fixed at the corners of an eq. triangle of side 0.5m the force on each of the particle has magnitude | askiitians.com | 2021.31 | [
{
"text": "dear pallavi force between two charge f= 1/4∏ε (20 *10-6) 2 /(.5) 2 = 9*10 9 * 4*10 -10 /.25 =14.4 n this force act along the side of triangle . in one charge two force act along the direction of side and angel between then is 60 resultant force f'=[f 2 +f 2 +2ffcos60] 1/2 = f√3 =24.94 n 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",
"name": "",
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] |
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b253ede5962bf7c7d759c7b8ec00bac6 | i had got 5559 rank in jee mains 2017..so suggest me best college and branch.and dtu vs nits. | askiitians.com | 2021.43 | [
{
"text": "see you can compare the nits and dtu, by first checking which nit you get, then the placement opportunity at the place. anyways dtu is a well known university and offers excellent placements and opportunities. there are various other private universities such as lovely professional university, ashoka university, bml university etc that offers exemplary placements and outstanding learning opportunities for the students.",
"name": "",
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}
] |
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7ffde5345d463f21b993fbba2551f8a0 | i got air 6899 in iit and secured 331 marks in bitsat..which institue should i go for?i am redy to take any branch. | askiitians.com | 2021.43 | [
{
"text": "dear apoorv, total no. of seats through iit is just 6875. as your rank is quite far away you cant expect something good. regarding your bitsat score, it will fetch you all the courses of your wish except comp. sc. or elec. at pilani. opting for pilani, mechanical will be the best option for you. thank you.",
"name": "",
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}
] |
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85abcdd8799f33ce875cc84677c3c618 | is it good to leave hometown and go to kota/delhi for iit preparation as the best coachings are in kota and fiitjee south delhi and vidyamandir delhi are best in delhi.
please dont refer me online coaching | askiitians.com | 2021.39 | [
{
"text": "if you are studying in schools like kv ntpc farakka then its definitely more than excellent decision. but if your school and teachers are well enough to teach you then you can offer a correspondence course and prepare for competitive at home along with schooling.",
"name": "",
"is_accepted": false
},
{
"text": "hello student, there is no need to leave your hometown if you really want to do preparation for iit jee then you can also do from your home town you just join the best home town coaching center and do study with dedication that will be much better than to leave your hometown.",
"name": "",
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] |
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7d4facf66c68b58472a5018fdc2089fe | sir i have got computer science in nit agartala and i can get metallurgy in pec . i live in chandigarh. can you tell me which option will be best for me also tell me about package in agartala. thanks.. | askiitians.com | 2021.25 | [
{
"text": "hi i think mettalurgy in pec would be better .pec has got a better placement record and is a better institute than nit agartala. if u are concerned about the future in metallurgy , then do not worry much, metallurgy has got a fine scope ahead. metallurgical engineering has a wide scope because it is a specialization field, basically metallurgy is science and technology of metals and materials,after four year you may get excellent job or you may go further for m.s or m.tech,basically metallurgy has three field which are physical metallurgy,extractive metallurgy and mechanical metallurgy, the main benefit of this branch is that very few seats available in the india .. so excellent and bright future in metallurgy.. metallurgical engineering is a broad field that deals with all sorts of metal-related areas. the three main branches of this major are physical metallurgy, extractive metallurgy, and mineral processing. physical metallurgy deals with problem solving: you’ll develop the sorts of metallic alloys needed for different types of manufacturing and construction. extractive metallurgy involves extracting metal from ore. mineral processing involves gathering mineral products from the earth’s crust.",
"name": "",
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}
] |
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038eec396dc6765abcf1112f21a9f32f | why there are different (and infact opposite) thermodyanamic conventions for same quantities in physics and chemistry??? even the direction of dipole moment in phy is from -ve to +ve and in chem +ve to -ve.....???????? why so??? why do the syllabi authors tend to confuse the students??? | askiitians.com | 2021.25 | [
{
"text": "the thing is that the authors dont tend to confuse students.... concept matters...",
"name": "",
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] |
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d650ef9fa5859d975026566a373ef298 | if two allele come together only is able to express itself. this phenomena is known as law of dominance law of segregation law of incomplete dominance law of independent assortment. | askiitians.com | 2021.43 | [
{
"text": "hi the correct answer is (3). incomplete dominanceis the blending ofallelesto create aphenotypethat is a combination of both traits the alleles code for.",
"name": "",
"is_accepted": false
}
] |
|
86432846f0e7e9b091276247bc7b25d0 | when ¼ is written with denominator as 12, its numerator is (a) 3 (b) 8 (c) 24 (d) 12 | askiitians.com | 2021.39 | [
{
"text": "dear student (1 × 3)/(4 × 3) = 3/12 consider, 3/12 divide both numerator and denominator by 3 = 1/4 hence, the answer is 3 thanks",
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}
] |
|
d8538f545e17968ac83e23581bb4b118 | sir., my jee score is 160 and 96 % in board exam of andhra pradesh ( 2013 passed ). what can be my air ?? is there any chance of nit’s or iiit’s ? | askiitians.com | 2021.43 | [
{
"text": "*",
"name": "",
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}
] |
|
6e18c3ad189008564c7758610f4fced6 | find intervals for the function f(x) = x is increasing or decreasing | askiitians.com | 2021.43 | [
{
"text": "it is increasing everywhere . as you can see!!!!!!!!!!!!!!",
"name": "",
"is_accepted": false
}
] |
|
0efb94e5d73153986721a0686ad72464 | john ordered 4 pairs of black socks and some additional pairs of blue socks. the price of the black socks per pair was twice that of the blue. when the order was filled,it was found that the no. of pairs of the two colours had been interchanged. this increased the bill by 50%. what was the ratio of the no. of pairs of black socks to the no. of pairs of blue socks in the original order?
please provide the solution. | askiitians.com | 2021.43 | [
{
"text": "let the price of a blue socks pair be rs. a then price of a black pair=rs 2a & john ordered n pair of blue socks\naccording to question\ncorrect bill=(4*2a+n*a)\nincorrect bill=n*2a+4*a\nsecond bill is 50% more than the first bill\n150%of(4*2a+n*a)=n*2a+4*a\n24a+3na=4na+8a\n16a=na\nn=16 thanks & regards\nsunil raikwar\naskiitians faculty",
"name": "",
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|
bdeaac7b6c11a48666b362c5de8ab342 | . if in the equation x + 2y = 10, the value of y is 6, then the value of x will be (a) -2 (b) 2 (c) 4 (d) 5 | askiitians.com | 2021.43 | [
{
"text": "answer: a",
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}
] |
|
5ee761fa6e8d434ff119fd02b9de9943 | regional diversity is also called alpha diversity beta diversity gamma diversity ecosystem diversity | askiitians.com | 2021.39 | [
{
"text": "the correct answer is 3. the term gamma diversity (γ-diversity) was introduced by r. h. whittaker[1] together with the terms alpha diversity (α-diversity) and beta diversity (β-diversity). whittaker's idea was that the total species diversity in a landscape (γ) is determined by two different things, the mean species diversity in sites or habitats at a more local scale (α) and the differentiation among those habitats (β).",
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|
11b32cebce914f71784100c0164e19a5 | what is the difference between didentate ligand and ambidentate ligand? | askiitians.com | 2021.31 | [
{
"text": "didentate or bidentate ligands are the logands which makes bonds with the metal ion in two places. it make two bonds with two different portion of its structure. ambidentate ligands are the types of ligands which have the possibility of forming bond with central metal ion from two sites but they only form one. this results into two different kinds of molecules with the same molecular formula.",
"name": "",
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},
{
"text": "a bidentate is one which combines from 2 different sites simultaneously....but ambidentae is one which can combine from 2 sites but at a time only one site can combine(ambidentate ar unidentate having 2 sites available out of wich one combines at a time)...",
"name": "",
"is_accepted": false
},
{
"text": "bidentate ligand a bidentate ligand has two points at which it can attach to the central atom. one example of such a ligand is: oxalate ion the two single-bonded oxygen atoms can each donate electrons to a central atom. three oxalate ions can coordinate a single central atom, giving an octahedral complex. ambidentate ligand ligands with more than one potential donor atom are known as ambidentate, such as the thiocyanate ion, ncs-, which can bind to the metal center with either the nitrogen or sulphur atoms. examples of ambidentate ligands include no 2- /ono - (o and n), and so 3 2- /oso 2 2- (o and s), where the first named atom refers to that which is bonded to the metal center. the existence of ambidentate ligands means that there can be linkage isomerism: [co(no 2 )(nh 3 ) 5 ] 2+ exists in a red form and a yellow form. the red form has the no 2- group bound by oxygen, when the ligand is known as the nitrito group, and the yellow form has the no 2- group bound by nitrogen, when the ligand is known as the nitro group.",
"name": "",
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|
365ee6417b5771fb86be3f422c6e7a21 | which is the best iit for electrical engineering in terms of placement & teaching. | askiitians.com | 2021.21 | [
{
"text": "dear prasanjeet iit bombay is best for electrical enineering 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",
"name": "",
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] |
|
e83bc53802a1e0cc42bf3483b5721687 | sir, m getting it@nit patna...plz tell me how gud is this branch in nit patna n how good is nit patna in terms of infrastrcture,placements,competition etc | askiitians.com | 2021.31 | [
{
"text": "dear dinesh, it branch is quite a good and job fetching branch. national institute of technology patna is the 18th national institute of technology created by the ministry of h.r.d. government of india after rechristening the erstwhile bihar college of engineering patna. the placement and training cell ensures that every student undergoes compulsory vocational training and summer internship at the best research institutes and reputed technical organizations of the country. we are all iitians and here to help you in your iit jee preparation. all the best. if you like this answer please approve it.... win exciting gifts by answering the questions on discussion forum sagar singh b.tech iit delhi",
"name": "",
"is_accepted": false
},
{
"text": "dear dinesh, please ask the same question only once. we are all iitians and here to help you in your iit jee preparation. all the best. if you like this answer please approve it.... win exciting gifts by answering the questions on discussion forum sagar singh b.tech iit delhi",
"name": "",
"is_accepted": false
}
] |
|
511ba1df053ba96df7b9c009f7753e73 | what is simlirite betwen gravitational accerlation and magnetic force. | askiitians.com | 2021.43 | [
{
"text": "gravitational force and magnetic force have a similarity that is both are non contact forces please approve my answer",
"name": "",
"is_accepted": false
},
{
"text": "similarities by using these two methods we measure a naturally oncurring field on the earth both are non contact force both are vector fields please",
"name": "",
"is_accepted": false
},
{
"text": "the similarities between the two are; they vary from place to place both are vector fields both are non contact forces both apply a certain force",
"name": "",
"is_accepted": false
}
] |
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