A metal oxide is yellow when hot and white when cold. The metal oxide is (A) CuO (B) ZnO (C) PbO (D) All | AITS & Test Series — Chem-Mantra | Chem-Mantra

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Question

A metal oxide is yellow when hot and white when cold. The metal oxide is (A) CuO (B) ZnO (C) PbO (D) All

Answer: B) ZNO

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