Chemistry · PYQ NEET UG 2017

Predict the CORRECT intermediate and product in the following reaction: \( \text{H}_3\text{C}-\text{C}\equiv\text{CH} \xrightarrow{\text{H}_2\text{O, H}_2\text{SO}_4}{\text{HgSO}_4} \text{ Intermediate (A)} \rightarrow \text{Product (B)} \)

1. A : \( \text{H}_3\text{C}-\text{C}=\text{CH}_2 \) with \( \text{SO}_4 \) attached, B : \( \text{H}_3\text{C}-\text{C}-\text{CH}_3 \) (with =O)
2. A : \( \text{H}_3\text{C}-\text{C}=\text{CH}_2 \) with \( \text{OH \) attached, B : \( \text{H}_3\text{C}-\text{C}=\text{CH}_2 \) with \( \text{SO}_4 \)
3. A : \( \text{H}_3\text{C}-\text{C}=\text{CH}_3 \) with =O, B : \( \text{H}_3\text{C}-\text{C}=\text{CH} \)
4. A : \( \text{H}_3\text{C}-\text{C}=\text{CH}_2 \) with \( \text{OH} \) attached, B : \( \text{H}_3\text{C}-\text{C}-\text{CH}_3 \) with =O