A black powder when heated with conc. HCl gives a greenish yellow gas. The gas acts as an…
Chemistry · Class 12 · CBSE — The p-Block Elements
A black powder when heated with conc. HCl gives a greenish yellow gas. The gas acts as an oxidising and a bleaching agent.
When it is passed over slaked lime, a white powder is formed which is a ready source of gas. The black powder and white powder respectively are
- KClO3 and NaClO3
- MnO2 and Ca(OCl)2
- MnO2 and KClO3
- MnCl4 and COCl2
Answer
(B) MnO 2 and Ca(OCl) 2
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