Number of oxygen atoms present in product 'P' is ______ (nearest integer).
Answer: 2
Solution
CH3C≡CCH3 with Na/liq.NH3 gives trans-but-2-ene; cold dilute KMnO4 (273 K) then gives the syn vicinal diol, 2,3-butanediol, which has two −OH groups. Number of oxygen atoms in P =2.