Question

Assertion $\text{CHC}{\text{l}}_{\text{3}}$ is stored in closed dark coloured bottles completely filled so that air is kept out. Reason ${\text{1}}^{\text{o}}$ amines on reaction with ethanolic KOH and $\text{CHC}{\text{l}}_3$ give carbylamine.

• A. If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
• B. If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
• C. If Assertion is true but Reason is false.
• D. If both Assertion and Reason are false.

Answer 1

Answer: (B)

$\text{CHC}{\text{l}}_3$ is stored in dark colored bottles and properly stopped to keep out air because in presence of air or light, it slowly oxidized to poisonous gas phosgene (carbonyl chloride). $CHC{l}_3+\frac{1}{2}{O}_2\underset{light}{\overset{Airor}{\to }}\underset{(phosgene)}{COC{l}_2}+HCl$ $RN{H}_2+alc.KOH+CHC{l}_3\to \underset{\text{carbylamine}}{\mathrm{RNC}}$ Hence, both Assertion and Reason are true but Reason is not the correct explanation of Assertion.