Question

Given below are two statements labelled as Assertion (A) and Reason (R).
Assertion (A): Treatment of chloroethane with a saturated solution of $AgCN$ gives ethyl isocyanide as a major product.
Reason (R): Cyanide ion $\left(C{N}^{-}\right)$ is an ambident nucleophile.

• A. Both A and R are true and R is the correct explanation of A
• B. Both A and R are true but R is not the correct explanation of A
• C. A is true but R is false
• D. A is false but R is true

Answer 1

The correct option is B Both A and R are true but R is not the correct explanation of A

Alkyl halides when react with saturated solution of $AgCN$ isocyanides are formed.
The electronegativity difference between $Ag$ and $C$ is so small that $Ag-C$ bond is covalent.
The carbon atom is no longer act as a nucleophile so $N$ atom attacks and form isocyanide.
Hence assertion and reason bopth are correct statements. But reason is no the correct expalanation.