Which of the following reagents could be used to distinguish aniline from methanamine? (i) Bromine water (ii) CHCl3 and aqueous KOH (iii) Dilute HCl (iv) Nitration mixture under heated condition

Question

Which of the following reagents could be used to distinguish aniline from methanamine? (i) Bromine water (ii) CHCl3 and aqueous KOH (iii) Dilute HCl (iv) Nitration mixture under heated condition (A) (i) only (B) (i) and (ii) (C) (i) and (iii) (D) (i) and (iv)

Tardigrade Admin · Accepted Answer

When bromine water is added to aniline at room temperature, decolourisation of the bromine water occurs and a white ppt. of

2, 4, 6

-tribromoaniline is obtained

Nitration of aniline will give benzene diazonium chloride which will further form an orange dye with

2

-naphthol and dil

N a O H

whereas methanamine will liberate

N_{2}

on reaction with

H N O_{2}

Q. Which of the following reagents could be used to distinguish aniline from methanamine? (i) Bromine water (ii) CHCl3​ and aqueous KOH (iii) Dilute HCl (iv) Nitration mixture under heated condition

(i) only

(i) and (ii)

(i) and (iii)

(i) and (iv)

Q. Which of the following reagents could be used to distinguish aniline from methanamine?
(i) Bromine water
(ii) $C H C l_{3}$ and aqueous $K O H$
(iii) Dilute $H Cl$
(iv) Nitration mixture under heated condition