See image — Hydrocarbons Chemistry Question

💡 Solution & Explanation

Correct option: \(\text{A}\). Classify the hydrocarbon by carbon framework and bond type: saturated alkanes, unsaturated alkenes/alkynes, or aromatic hydrocarbons. The selected option follows from that classification. Recovered question text: 77. Acetylene when passed through 20% H SO at 80°C givs acetaldehyde. The catalyst required for this conversion is 2 4 (A) Anhydrous AlCl (B) HgSO (C) Pd (D) Pt 3 4