Acetylene, on reacting with formaldehyde under high pressure, gives

Options

(a) propanol
(b) propyl alcohol
(c) allyl aldehyde
(d) butyndiol

Correct Answer:

butyndiol

Explanation:

HC ≡ CH + HCHO (Acetylene) → HC ≡ C – CH₂OH (Formaldehyde)
HC ≡ C – CH₂OH + H – C = O → HOCH₂C ≡ CCH₂OH ( But – 2- yn-1,4-diol)