Haloalkanes and Haloarenes

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Question
CBSEENCH12011348



A ( Predominantly) is

Solution

B.

The mechanism of electrophilic addition reaction is consistent with the occurrence of rearrangement leading to more stable carbocation.
The order of stability of carbocation is as;
T > S> P > CH3

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Question
CBSEENCH12011258

2,3 -dimethyl - 2- butene can be prepared by heating which of the following compounds with a strong acid?

  • (CH3)2CH-CH(CH)3-CH=CH2

  • (CH3)3C-CH=CH2

  • (CH3)2C =CH-CH2-CH3

  • (CH3)2CH-CH2-CH=CH2

Solution

B.

(CH3)3C-CH=CH2

Question
CBSEENCH12011084

A single compound of the structure is


obtainable from ozonolysis of which of the following cyclic compound?

Solution

A.

Question
CBSEENCH12011325

Benzene reacts with CH3Cl in the presence of anhydrous AlCl3 to form

  • toluene

  • chlorobenzene

  • benzylchloride

  • xylene

Solution

A.

toluene

CH3Cl in the presence of anhydrous AlCl3 acts as alkylation agent and introduces an alkyl group.


This reaction is known as Friedel-Craft's alkylation of benzene.

Question
CBSEENCH12011381

Consider the following compounds:



The correct decreasing order of their reactivity towards hydrolysis is;

  • (ii) >(iv) > (iii) > (i)

  • (i) > (ii) > (iii) > (iv)

  • (iv) > (ii) > (i) > (iii)

  • (ii)  > (iv)> (i) > (iii) 

Solution

D.

(ii)  > (iv)> (i) > (iii) 

Decreasing order of their reactivity toward hydrolysis is: