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 Debotosh Chatterjee's messages in the community 1 2 3 ... 56 57 58 GO Go to Page...
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 Discussion Forums -> This Post 2 points    (0    in 1 votes )   [?]

cross aldol condensation, in acidic medium i.e. by formation of enol !

 Discussion Forums -> This Post 7 points    (1    in 2 votes )   [?]

collections from previous goiit articles :

1)Area of the triangle made by the line ax+by+c=0 and the co ordinate axes is c2/(2ab)

2)Area of the rhombus formed by ax(+or-)by(+or-)c=0 is 2c2/ab

3)If ABCD is parallelogram

then D=A-B+C

Eg:If (1,6),(2,5),(5,1) are three vertices of a parallelogram

then fourth vertex is (1-2+5,6-5+1) ie(4,2)

4)The foot of the perpendicular (h,k) from (x1,y1) to the line ax+by+c=0 is given by

(h-x1)/a=(k-y1)/b= -(ax1+by1+c)/(a2+b2)

5)The image or reflection of the point (x1,y1) in the line ax+by+c=0 is (h,k) where

(h-x1)/a=(k-y1)/b= -2(ax1+by1+c)/(a2+b2)

(4) and 5) can be applied to 3-D geometry too!)

6)The area bounded by y2=4ax andx2=4by is given by (4a)(4b)/3

7)The area bounded by y2=4ax and the line y=mx is 8a2/(3m3)

8)The area bounded by y2=4ax and its latus rectum x=a is 8a2/3

 This Post 0 points    (0    in 0 votes )   [?]
excellent copy !!!!
 This Post 0 points    (0    in 0 votes )   [?]
best of luck !!! go ahead !!!
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 This Post 5 points    (1    in 1 votes )   [?]

hi...please join my forum ...http://organic-masters-shell.lefora.com/...for active discussions in all topics for JEE ...with special focus on organic chemistry !!! it is soon going to be transformed into a vibrant stage for IITJEE !! all the best...hope you take advantage of the notes and analysis put up there in"admin's corner"

 This Post 0 points    (0    in 0 votes )   [?]
bogus and very common old advice....need to have something new!!!!
 This Post 0 points    (0    in 0 votes )   [?]
stupidity at its best !!!
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

common sense !!!!

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

CH3Cl > CH2Cl2 > CHCl3 >CCL4

 This Post 0 points    (0    in 0 votes )   [?]
good!!!
 This Post 0 points    (0    in 0 votes )   [?]
funny and tricky!!!!!!!!!!
 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

stupid question.......-CHO - group at 1,6 positions of normal hexane chain!!!!!!

 This Post 0 points    (0    in 0 votes )   [?]
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 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

well i think i had something vague in mind last time......etard's reaction is actually meant for "an aromatic or heterocyclic bound methyl group "

 This Post 0 points    (0    in 0 votes )   [?]
 This Post 42 points    (8    in 9 votes )   [?]

Time for some female bashing. Q: What is the difference between women and puppies? A: Puppies grow up. Q: Why do women always have a stupid look on their faces? A: Because they are... Q: What do women have in common with ceramic tiles? A: Fix them properly once and you can walk all over them forever. Q: If you drop a women and a brick out of a plane, which one would hit the ground first? A: Who cares?????..... Q: What did God say after he created women? A: I can do better than this! And then he created woman!!!. Q: What's the difference between an intelligent women & a UFO ? A: I don't know, I've never seen either. Q: What are two reasons why women don't mind their own business? A: i) no mind ii) no business Q: What is the common thing between women and pigs? A: every thing!! Q: What makes women chase men they have no intention of marrying? A: The same urge that makes dogs chase vehicles they have no intention of driving. Q: What do you do with a women who thinks he's God's gift? A: Exchange him!! Q: Why do women like talented men? A: Opposites attract.

 Discussion Forums -> This Post 0 points    (0    in 0 votes )   [?]

donot post such stupid questions.....this is simple calculation....for mcq purpose use hit and trial!!!

 This Post 0 points    (0    in 0 votes )   [?]
so stupid.......remember this is an educational site(ofcourse,,it no longer is)....and these kinds of articles only kid away with the seriousness of any such site!!!
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