Chemistry
From the substances — Ammonium sulphate, Lead carbonate, Chlorine, Copper nitrate, Iron [II] sulphate — State : A compound which on heating with NaOH produces a gas which forms dense white fumes with HCl.
Ammonia
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Answer
Ammonium sulphate.
Reason — Ammonia gas is produced when ammonium sulphate reacts with NaOH. Ammonia gas forms dense white fumes with HCl.
(NH4)2SO4 + 2NaOH ⟶ Na2SO4 + 2H2O + 2NH3[g]
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