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Mathematics of Dipole Moment

29.In a react...

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29.In a reaction of C6H5Y with an electrophile,the major product(60%) is m-isomer,the group Y is 1.-cl 2.-CH 3.-NH2 4-COOH

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Q. (a) Write the chemical reaction involved in Etard reaction.

(b) Arrange the following in the increasing order of their reactivity towards nucleophilic addition reaction:

C H_{3} - C H O, C_{6} H_{5} C O C H_{3}, H C H O

p K_{a}

C l - C H_{2} - C O O H

lower than the that of

C H_{3} C O O H

?

(d) Write the product in the following reaction:

C H_{3} C H_{2} C H = C H - C H_{2} C N 1. (i - B u)_{2} A I H - -------- \to 2. H_{2} O

(e) A and B are two functional isomers of compound

C_{3} H_{6} O

. On heating with NaOH and

I_{2}

, isomer A forms yellow precipitate of iodoform whereas isomer B does not form any precipitate. Write the formulae of A and B.

C H_{3} - C H_{2} - C O O H + B r_{2} P B r_{3} - -- \to C H_{3} - C | B r H - C O O H

H_{2} O, C H_{3} N H_{2} - -------- \to

C H_{3} - C | N H_{2} H - C O O H

The following sequence of reaction affords :

Q. 1-butyne on reaction with hot alkaline

K M n O_{4}

Q. (a) Account for the following :

(i)

C l - C H_{2} C O O H

is a stronger acid than

C H_{3} C O O H

.

(il) Carboxylic acids do not give reactions of carbonyl group.

(b) Write the chemical equations to illustrate the following name reactions :

(i) Rosenmund reduction

(ii) Cannizzaro's reaction

(c) Out of

C H_{3} C H_{2} - C O - C H_{2} - C H_{3}

C H_{3} C H_{2} - C H_{2} - C O - C H_{3}

, which gives iodoform test?

Q. Give a balanced chemical reaction:
CH₃ CH₂OH to CH₃COOH in presence of Alkaline KMnO₄

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