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JEE Main Chemistry question

ChemistrySome Basic Concepts of ChemistryJEE Main

A metal oxide is reduced by heating it in a stream of hydrogen. It is found that after complete reduction, 3.15 g of oxide yielded 1.05 g of metal. From the above data we can say that

Answer: (C)

Solution

Oxygen combined g with 1.05 g metal. Equivalent weight (mass combining with 8 g O) . Since the metal's valency

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Question ID VK-130620