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NEET Chemistry QUESTION #1079
Question 1
Which one of the following reactions does NOT give benzene as the product?
  • \(\text{HC}\equiv\text{CH}\) passed through red hot iron tube at 873 K
  • Benzenediazonium chloride \(+ \text{H}_2\text{O}\) (warm)✔️
  • Sodium benzoate \(+\) sodalime \(\xrightarrow{\Delta}\)
  • n-hexane \(\xrightarrow{\text{Mo}_2\text{O}_3,\ 773\text{K},\ 10-20\ \text{atm}}\)
Correct Answer Explanation
Option (2): Benzenediazonium chloride hydrolyzed with warm water gives phenol (\(\text{C}_6\text{H}_5\text{OH}\)), NOT benzene. (1) Ethyne trimerization gives benzene. (3) Decarboxylation of sodium benzoate gives benzene. (4) Catalytic reforming of n-hexane gives benzene.