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 Rajat Khanduja's messages in the community 1 2 3 ... 12 13 14 GO Go to Page...
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 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
What advice do you give at this time of the year? Is is correct to concentrate more on self happiness and confidence than revising and feeling troubled.
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

Paper was good not counting the silly mistakes commited.

I took (-4)*5= 20 instead of -20............

So losing a mark or more in the 6 marker on 3D

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
zero . .. .. .. only
 This Post 0 points    (0    in 0 votes )   [?]
i'll try and spread the message
 This Post 0 points    (0    in 0 votes )   [?]
thanks a lot for the suggestions

 Discussion Forums -> This Post 5 points    (1    in 1 votes )   [?]
Can, we proceed this way.

If it is a perfect square, essentially, its roots have been reduced to 2 from 4.

Then, if p and q are the roots, then,

p.p.q.q = 1 , 2p+2q = -a , 2p.p + 2q.q + 4pq = b

and another equation , summantion of roots taken three at a time = 8

So we have 4 equations and 4 variables
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
I'll tell u the method.
As we have to find the velocity for no jumping
At the end of the plane ( where the incline begins) the centre of mass can be assumed to be in circular motion about the edge,

So, first eqn. is given by circular motion.

Secondly, apply energy coservation as the centre of mass rotates about the edge and finally stops rotating about the edge.

Nudge me if needed.

PS : similar question in IRODOV,

 Discussion Forums -> This Post 5 points    (1    in 1 votes )   [?]
Another method as this is a class X question

Replace tanx = sinx / cosx

then, write sinx = ( 1 - cosx ) (1+ cos x )
And its done.
 Discussion Forums -> This Post 2 points    (0    in 1 votes )   [?]
I've gone thru both solomons and boyd

Both have their advantages and disadvantages and u shud keep in mind while doing the syllabus.

Boyd is gud in topics like stereoisomerism. And solomons explains the reaction mech pretty well

Solomons is what I'd suggest for complete organi, but keep in mind that it is not a jee centric book and hence doesn't cover every important pt.
 Discussion Forums -> This Post 2 points    (0    in 1 votes )   [?]
For the second reaction occurs

That is nothing but the Finkelstein reaction using NaI

It occurs by Sn2 and is explained by stabilty in solvent, though I myself don't know very well.
 This Post 0 points    (0    in 0 votes )   [?]
thanx a lot. this shall help me
 This Post 0 points    (0    in 0 votes )   [?]
GR88888888

 This Post 0 points    (0    in 0 votes )   [?]
Well, I know how its to love and also to lose. Its not us who can motivate u, but u urself who can get urself back on track.

Think not just of the girl, but the many people u know. Get into their shoes and try and feel what they would feel if they come to know that u killed urself that too because she broke up with u. Think about ur parents to get up in the morning and find u lying dead.

If u truly love this girl, u surely don't want to hurt her despite what she has done to u. So live. Coz even she will be full of guilt once she knows u killed urself coz of her.

Life is beautiful and a present. Live it. Its ups and downs is the fun as in a roller coaster ride. Enjoy it.

Prove that u were worth her. Prove that she has left someone valuable. Let ur anguish through ur books and don't think anything else.

Do not forget what all ur parents want 4m u. They never left u for troubles in their personal or professional life. Don't u ditch them.

And I'm sure u know what Munnabhai told that guy in the movie when he tried to commit suicide for losing a loved one.
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I can actually co-relate and remember all the efforts to stay awake till late. Thanks for reminding me. GR8 article
 This Post 0 points    (0    in 0 votes )   [?]
thanks for re-motivating
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

This link says that benzyne is aromatic. Also, Solomon's says this
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

Is benzyne aromatic??????? please justify. Preferably give me a link or book to refer to.

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]
As said by sidgupta2006, it makes the solution aprotic and also ensures that there is no water molecule.

This is helpful for grgnard reagent synthesis.
 This Post 0 points    (0    in 0 votes )   [?]
This method is wrong, as it has to be updated every year. So all those who are getting wrong results ( a year lesser than there age) its because this is last years algorith. The difference has to be made in the step where u add 1756 or 1757.
 Discussion Forums -> This Post 5 points    (1    in 1 votes )   [?]

As djdylan2000 said, there's no carbocation formed so there's no issue of carbocation stability.

Now, nucleophillic attack will be better at a position where the charge on carbon is more positive.

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