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MHT CET Chemistry question

ChemistryThe d and f-Block ElementsMHT CET

Which of the following statement(s) is/are correct? I. CuS is white in colour. II. exists as dark purple black prismatic crystals. III. Basic copper carbonate is . IV. On strong heating, potassium dichromate decomposes with evolution of oxygen. Choose the correct option.

Answer: (B)

Solution

II, III and IV are correct (KCrO on strong heating gives KCrO, CrO and O), but CuS is

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Question ID VK-074874