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see here :
http://www.nitt.edu/home/academics/admissions/btech/staterank/

its really cool!!

CH₂Cl₂ + CH₃ONa ------- > CH₃-O-CH₂Cl '

1 eqv

given

$\frac{I_1}{I_2}=\frac{4}{1}$

$\frac{I_1}{I_2}=\frac{a^2}{b^2}$ (a and b are amplitudes of the interfering light waves )

$\frac{a^2}{b^2}=\frac{4}{1}$

a=2b

$\frac{I_{max}}{I_{min}}=\frac{(a+b)^2}{(a-b)^2}$

$\frac{I_{max}}{I_{min}}=\frac{(2b+b)^2}{(2b-b)^2}$

$\frac{I_{max}}{I_{min}}=\frac{9}{1}$

ok use SOCl2 .....

PPh3 + CH3-O-CH2Cl --------- > CH3-O-CH=PPh3

this diagram of Ni-DMG complex will help you ....

see here :

http://en.wikipedia.org/wiki/Image:Nidmg.png

1. react phenyl acetylide with HgSO4/H2SO4 , we will get acetophenone..

2. do iodoform reaction we will get benzoic acid

3. convert benzoic acid to benzoyl chloride using HCl

4. convert benzoyl chloride to benzaldehyde using rosenmund reaction

try this problem ...

$If\;\; 0<x<\frac{\pi}{4}\; ,\;\; then\;\; prove\;\; that$

$\frac{cosx}{sin^2x(cosx-sinx)}>8$

see here

http://www.goiit.com/posts/list/integration-tanx-1-2-integrate-this-25529.htm

i knew that VIT was a crap a long time ago.... thats why i dint write the exam......

the most funny part of this is that VIT is one of the top ranked private engineering colleges....

see this :

http://www.goiit.com/posts/list/about-non-iits-vit-is-a-big-crap-proof-56420.htm

there are four hydrogen bonds in water molecule ........

see this.....

gud...

@sandeepramesh ..... this question is already answered by konichiwa2x here :

http://www.goiit.com/posts/list/algebra-solve-for-definite-salutes-32483.htm

use binomial theorem for any index .....

$(I-A)^{-1}=I+A+\frac{(-1).(-2)}{2!}.A^2+\frac{(-1).(-2).(-3)}{3!}.A^3+......... till\;\;\infty$

since A³ = 0 .... all terms get cancelled except I + A +A² .....

so $I+A+A^2=(I-A)^{-1}$