Assertion(A) Acylation of amines gives a monsubstituted product whereas alkulation of amines gives polysubstitues product.
Reason(R ) Acyl group sterically hinders the apprach of further acyl group

Methylation of methyl amine gives 1^(st) product as

Assertion : The order of basic strength in case of methyl substituted and ethyl substituted amines in aqueous state is different . Reason : Methyl group has stronger inductive effect than ethyl group .

Assertion : Carbxoylic acids donot give characteristic reactions of carbonyl group. Reason : The carbonyl group is sterically hindered in carboxylic acid.

Assertion (A): Pentan-2-one on reaction with NaHSO_(3) gives sodium bisulphite adduct product. Reason (R ): (C=O) group of pentan-3-one is sterically hindered and nucleophile SO_(3)^(2-) is also of large size, so nucleophilic addition reaction does not occur.

Assertion (A): Pentan-2-one on reaction with NaHSO_(3) gives sodium bisulphite adduct product. Reason (R ): (C=O) group of pentan-3-one is sterically hindered and nucleophile SO_(3)^(2-) is also of large size, so nucleophilic addition reaction does not occur.

Assertion(A) Combustion of 16g of methane give18 g of water. Reason(R) In the combustion of methane, water is one of the products.

Assertion(A) Combustion of 16g of methane give18 g of water. Reason(R) in the combustion of methane, water is one of the products.

Assertion (A) : Combustion of 16 g of methane gives 18 g of water Reason (R) : In the combustion of methane, water is one of the products.