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Prove sin10 is irrational. ...

Can someone give me the following 2 mechanisms? 1) Mech of DDT formation from Chloral and Chloro-Benzene 2) Mech of Di-oxane formation from Glycol in presence of fuming Sulphuric acid... ...

find the coefficient of x50 in the expression (1+x)1000+2x(1+x)999+3x2(1+x)998+...+1000x999(1+x)+1001x1000 may be it is a sum from any common book bu i do not have the solution .i found it in my state book exercise. ...

if n=1,2,3 α,β are the centroid circumcenter and orthocenter of a triangle whose sides are on y^2 = x^3 ........ prove that α1/β1 + α2/β2 + α3/β3 = 0!!!!!!!! ...

Q1. Slope of common tangent to parabolas y2 = 4ax and x2= 8y Q2.if 2y = x + 24 is atangent to the parabola y2 = 24x then its distance from parallel normal is ...

Show that in an electric circuit when a current gets divided into a number of branches it does so in such a way that the heating effect is minimum? ...

1) In a book it is said that in the dehydrohalogenation of alkyl hallide to form alkene, if the alkyl hallide contains only one β-carbon atom then only one alkene is formed.And they have sited this example CH3 | CH3-C-Br + a ...

Q Draw the graph of log(sec x ) providing all the analyzes and do it as a question is meant to be done (from basics) ...

Yeah i know.I've only been posting ques on functions.But wat can i do.At the moment i am stuck wid this fordsaken chapter.But i do try to put up ood ques dat will not make u guys feel bored. So here are a few more of my doubt ...

Can a billiard ball inside a cube bounce off every wall once and return to its starting point? JUst a puzle for those who are free..... ...

What is diluted milk- a) A suspension b) A colloid or c) A True Solution And why? ...

[x][y]=[xy] ...

draw the graph of y=x sin{x} ...

is 0.1010010010001........ a rational or irrational number? ...

A cell of voltage E is connected to 2 batteries of resistance R each. Everything is connected in series. A capacitor of capacitance C is connected parallel to one of the batteries of resistance R.The switch is closed at t=0. ...

x5+y5=5a2xy2 ...

Q Draw the graph of 4{x}-[x] ...

if i add it across CH3NH2 *Image* will i get cis 1,2 dimethyl cyclopropane or trans 1.2 dimethyl cyclopropane?????????????????????? ...

Stmnt 1: The flux through a gaussian surface that encloses a capacitor is zero Stmnt 2: The battery sends equal amounts of positive and negative charges to the two plates of an uncharged capacitor ...

when i will receive my next phase? what about the books of physics,chemisty? ...

Q. The distance between two parallel lines is unity.A point "P" lies between the two lines at a distance "A" from one of them.Q & R are points selected , 1 on each line such that triangle PQR is equilateral and the side of th ...

is it better to study calculus from the beginning of class xi or it's better to finish other topics and then go for calculus? ...

please suggest a good book on physical chemistry . ...

There is a section TargetIIT classics. Can you guys post the links of some that you think are eligible to be members there.. My Rule: They should be relevant to IIT JEE syllabus.. Either they must bring out something that mos ...

Let A be the sum of the digits of the number 4444^{4444} , and B the sum of the digits of A. Compute the sum of the digits of B. ...

Guys why is 5 gram atoms of Nitrogen heavier than 50 grams of Iron ? ...

Its nice to see so much of action in this section in particular, and in the forums in general, but I have a suggestion about contributing problems. I can sum it up as: Be Genuine My feeling is that we can all truly enjoy and ...

A small charge q is place at the corner of a cube.Find out the flux passing through each side of the cube . ...

Prove that there are infinitely many primes congruent to 9 mod 10. ...

Please prove the multinomial theorem... i,e (x+y+z)n= Σ n!/p!q!r! xpyqzr . p,q,r are non - negative integer and p+q+r=n ? ...