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AITS & Test SerieshardMCQ SINGLE

Question

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Answer: A

💡 Solution & Explanation

 Ag2S Cu2S PbS are the main sulphide ore of Ag, Cu and Pb respectively  Sn exists as SnO2  Al exists as Al2O3  Mg exists as MgSO4  7H2O, MgCO3, etc.

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