Q70 of 77 Page 192

Assertion : N-Ethylbenzene sulphonamide is soluble in alkali.

Reason : Hydrogen attached to nitrogen in sulphonamide is strongly acidic.


Note : In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.


Hinsberg reagent/benzenesulphonyl chloride on reaction with primary amine ethylamine yields N-Ethylbenzene sulphonamide. The hydrogen attached to N-Ethylbenzene sulphonamide is acidic in nature. This is due to the presence of strong electron withdrawing sulphonyl group. Hence, it is soluble in alkali.


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68

Assertion : Acylation of amines gives a monosubstituted product whereas alkylation of amines gives polysubstituted product.

Reason : Acyl group sterically hinders the approach of further acyl groups.


Note : In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.


 69

Assertion : Hoffmann’s bromamide reaction is given by primary amines.

Reason : Primary amines are more basic than secondary amines.


Note : In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.


 71

Assertion : N, N-Diethylbenzene sulphonamide is insoluble in alkali.

Reason : Sulphonyl group attached to nitrogen atom is strong electron withdrawing group.


Note : In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.


 72

Assertion : Only a small amount of HCl is required in the reduction of nitro compounds with iron scrap and HCl in the presence of steam.

Reason : FeCl2 formed gets hydrolysed to release HCl during the reaction.


Note : In the following questions a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices.