A. Evolution of ammonia when heated with ammonium salts
B. Evolution of carbon dioxide gas when added to a trioxocarbonate (IV) salt
C. Formation of salt and water with alkalis
D. Formation of salt and hydrogen gas with reactive metals

Correct Answer: Option A

A. Evolution of ammonia when heated with ammonium salts

Explanation

Ammonium salts react with bases to release ammonia and not with acids.

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