ram kumar   ram kumar is offline ram kumar's messages in the community
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Catalogs Discussion Forums -> Counselling Zone -> Aieee counselling doubt... -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
yes they will verify the original certificates and return them to us....... but they will take the xerox copies of original certificates ...

P.S : i attended counselling in trichy on 4th july ....

Catalogs Discussion Forums -> Non IIT Institutes -> aieee help -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
see here :
http://www.nitt.edu/home/academics/admissions/btech/staterank/
Community shelf Community shelf -> Amazing Mind Reader,Do try This Atleast Once... -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
its really cool!!
Catalogs Discussion Forums -> Organic Chemistry -> URGENT : CH3OCH=PPh3 ; PLEASE PREPARE THE YLIDE -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

                      


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


                         1 eqv 

Catalogs Discussion Forums -> Optics -> wave optics problem -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]

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}


 


 

Catalogs Discussion Forums -> Organic Chemistry -> convert phenyl acetylide to benzaldehyde -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
ok use SOCl2 .....
Catalogs Discussion Forums -> Organic Chemistry -> URGENT : CH3OCH=PPh3 ; PLEASE PREPARE THE YLIDE -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

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

Catalogs Discussion Forums -> Inorganic Chemistry -> chem -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

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


see here : 


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


 


 

Catalogs Discussion Forums -> Organic Chemistry -> convert phenyl acetylide to benzaldehyde -> Go to message
This Post 10 points    (Olaaa!! Perrrfect answer.   in 2 votes )   [?]

 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


 

Catalogs Discussion Forums -> Trignometry -> inequality... -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

try this problem ...


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


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

Catalogs Discussion Forums -> Integral Calculus -> integrations !! jaldi batao plez -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]
see here

http://www.goiit.com/posts/list/integration-tanx-1-2-integrate-this-25529.htm
Catalogs Discussion Forums -> Non IIT Institutes -> VIT ghotala.......... -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

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 


 


 

Catalogs Discussion Forums -> Physical Chemistry -> how many hydrogen bonds are there in water molecule??? -> Go to message
This Post 10 points    (Olaaa!! Perrrfect answer.   in 2 votes )   [?]

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


see this.....


 


 

Community shelf Community shelf -> Organic reagents...[celebrating my first anniversary as a goIITian :) ] -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
gud...
Catalogs Discussion Forums -> Algebra -> greatest integer function -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
@sandeepramesh ..... this question is already answered by konichiwa2x here :

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

Catalogs Discussion Forums -> Algebra -> FIND VALUE -> Go to message
This Post 12 points    (Olaaa!! Perrrfect answer.   in 3 votes )   [?]

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}


 

Catalogs Discussion Forums -> Organic Chemistry -> alkylation of benzene with h3po4 -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

                                                          


benzene  +  CH3-CH=CH2     -------------------------->   CUMENE


                                                              H3PO4

Catalogs Discussion Forums -> Integral Calculus -> integration -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

answer is   pi*log2

Catalogs Discussion Forums -> Physical Chemistry -> Concentrated has a density ............. -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 molarity =  ( % * 10 * density) / molecular mass


  


molarity =  ( 98 * 10 * 1.95 ) / 98 =  19.5  M


         

Catalogs Discussion Forums -> Differential Calculus -> Find the sum using only calculus -> Go to message
This Post 7 points    (Olaaa!! Perrrfect answer.   in 2 votes )   [?]

for the first problem the required sum is.....


S =  1+2x+3x^2+4x^3+.....+nx^{n-1}


now consider


T =  x+x^2+x^3+x^4+....+x^n


using sum of GP formula


T = x+x^2+x^3+x^4+....+x^n  =    \frac{x(x^n-1)}{x-1}


now find \frac{dT}{dx}  which will give you S


 

 
 
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