The compounds and in the following reaction are, respectively:
The compounds A and B in the following reaction are, respectively:
- Benzyl alcohol, Benzyl isocyanide
- Benzyl chloride, Benzyl isocyanide
- Benzyl alcohol, Benzyl cyanide
- Benzyl chloride, Benzyl cyanide
Solution

The final product is an isocyanide as the bond has covalent nature, due to which is unavailable for bond. Hence, N bonds with the benzylic carbon leading to formation of isocyanide.
Asked in: JEE Main 2019 (09 Jan Shift 1)