Q.39. Identify the product \mathbf{P} obtained in the following reaction:
Benzene + ozone (excess) \xrightarrow{\mathrm{CCl}_4}
Benzene triozonide \xrightarrow{\mathrm{Zn} / \mathrm{H}_2 \mathrm{O}} \mathrm{P} + \mathrm{H}_2 \mathrm{O}_2
A. Benzoic acid
B. Benzaldehyde
C. Phenol
D. Glyoxal
Answer: D
Explanation:-
When benzene is treated with ozone in the presence of an inert solvent such as carbon tetrachloride, benzene triozonide is formed, which is then decomposed by zinc dust and water to give glyoxal.
