Colourless salt (A) + dil. H 2 SO 4 or CH 3 COOH + Kl blue colour with starch. (A) can be

Chemistry · JEE Main · NTA Exams — Redox Reactions and Electrochemistry

Colourless salt (A) + dil. H₂SO₄ or CH₃COOH + Kl blue colour with starch. (A) can be

1. K₂SO₃
2. Na₂CO₃
3. NH₄NO₂
4. NH₄Cl

Answer

(C) NH 4 NO 2

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