Chemistry NCERT Exemplar Solutions Class 12th Chapter Thirteen

Given below are two statements: One is labeled as Assertion A and the other is labeled as Reason R

Assertion A: Aniline on nitration yields ortho, meta & para nitro derivatives of aniline.

Reason R: Nitrating mixture is a strong acidic mixture.

In the light of the above statements, choose the correct answer from the options given below

A primary aliphatic amine on reaction with nitrous acid in cold (273K) and there after raising temperature of reaction mixture to room temperature (298K), gives a / an

In bromination of Propyne, with Bromine 1, 1, 2, 2-tetrabromopropane is obtained in 27% yield. The amount of 1, 1, 2, 2- tetrabromopropane obtained from 1g of Bromine in this reaction is_______________* 10^-1g. (Nearest integer) (Molar mass: Bromine = 80g / mol)

The major product $\left[\mathrm{B}\right]$ in the following reactions is:

The major product $\left[\mathrm{B}\right]$  in the following reactions is:

The major product $\left[\mathrm{C}\right]$  in the following reaction sequence will be:

The major product $\left[R\right]$  in the following sequence of reactions is:

The major product $\left[R\right]$  in the following sequence of reactions is:

In the following reaction sequence, $\left[\mathrm{C}\right]$ is:

Decarboxylation of all six possible forms of diaminobenzoic acid $C_6{H}_3{\left(N{H}_2\right)}_{2}COOH$  yields three product A, B and C. Three acids give a products 'A' two acids gives a products 'B' and one acids give a products 'C'. The melting point of product 'C' is