MCQ
The product(s) is / are:


- A(A) is an alcohol; (B) is an aldehyde
- B(A) is an aldehyde; (B) is an alcohol
- C(A) and (B) both are alcohols
- D(A) and (B) both are aldehydes

Explanation:
A reagent used for both reactions is reducing, it will reduce the carbonyl-chloride to the alcohol group.

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${H_3}C - C \equiv CH\,\xrightarrow[{HgS{O_4}}]{{{H_2}O,\,{H_2}S{O_4}}}\,\mathop {Intermediate}\limits_{(A)} \,$$ \to \,\mathop {\Pr oduct}\limits_{(B)} $