Class 10 chemistry Practice Tests
Class 10 Chemistry Online Tests
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MCQ 1: Ore of iron is called
MCQ 2: Ore of silicon is called
MCQ 3: Process in which some minerals are converted to the oxide by heating in the air at a temperature below their melting point is called
MCQ 4: Ore of chromium is called
MCQ 5: Metallic compounds that occur naturally are called
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