Assertion: `p-N, N-`dimethylaminobenzaldehy under-goes benzoin condensation
Reason : The aldehydic `(-CHO)` group is meta directing.

Assertion : Acetaldehyde undergoes aldol condensation with dil. NaOH. Reason Aldehydes which donot contain a-hydrogen undergo aldol condensation.

Assertion : Carboxylic acids do not undergo Friedel - Crafts reaction. Reason : Carboxyl group is meta-directing group.

Assertion : N, N-Diethyl ethanamine is more basic the N, N-Dimethyl methanamine. Reason : +I effect of ethyl group is more then methyl

Assertion(A): N,N-diethylbenzene sulphonamide is insoluble in alkali. Reason(R ): Sulphonyl group attached to nitrogen atoms is strong electron withdrawing group.