(a) An organic compound X of molecular formula C2H4O2 gives brisk effervescence with sodium hydrogen carbonate. give the name and formula of X. (b) A mixture of ethyne (acetylene) and oxygen is burnt for welding. Can you tell why a mixture of ethyne and air is not used? (c) Name a chemical reaction which is characteristic of unsaturated hydrocarbons (like alkenes and alkynes).

(a) An organic compound X of molecular formula C2H4O2 gives brisk effe

1.	(a) An organic compound X of molecular formula C2H4O2 gives brisk effervescence with sodium hydrogen carbonate. give the name and formula of X. (b) A mixture of ethyne (acetylene) and oxygen is burnt for welding. Can you tell why a mixture of ethyne and air is not used? (c) Name a chemical reaction which is characteristic of unsaturated hydrocarbons (like alkenes and alkynes).
Answer» (a) An organic compound X of molecular formula $C_{2} H_{4} O_{2}$ gives brisk effervescence with sodium hydrogen carbonate. give the name and formula of X. (b) A mixture of ethyne (acetylene) and oxygen is burnt for welding. Can you tell why a mixture of ethyne and air is not used? (c) Name a chemical reaction which is characteristic of unsaturated hydrocarbons (like alkenes and alkynes).