Q. The compound, which evolves carbon dioxide on treatment with aqueous solution of sodium bicarbonate at 25°C, is

 1699  220 WBJEEWBJEE 2019Aldehydes Ketones and Carboxylic Acids Report Error

Solution:

CHCOCl hydrolyses to form CHCOOH even at 25°C, which subsequently reacts with NaHCO present in the same medium to form CO