(A) : Ammonium salts evolve ammonia when...

(A) `:` Ammonium salts evolve ammonia when heated with NaOH.
(R ) `:` Ammonium salts are soluble in water

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Colourless pungent fumes of HCl are evolved on heating the the chloride with conc. `H_(2)SO_(4)`.
`NaCl +H_(2)SO_(4)rarrNaHSO_(4)+HCl`

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