• # question_answer On heating anhydrous $N{{a}_{2}}C{{O}_{3}}$, ........ is evolved [CPMT 1971, 79] A) $C{{O}_{2}}$ B) Water vapour C) $CO$ D) No gas

Anhydrous form of $N{{a}_{2}}C{{O}_{3}}$ does not decompose on heating even to redness. It is a amorphous powder called soda ash.