A bivalent metal has equivalent weight $12$ . The molecular weight of its oxide will be:

36

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24

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40

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32

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Solution

The correct option is A $40$
Equivalent weight= $12$
Molecular weight= $12 \times$ Valency factor = $24 u$
Its oxide is $X O$ where $X$ is the bivalent metal.
So, molecular weight of oxide is $24 + 16 = 40$

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The oxide of a metal has 32% oxygen. Its equivalent weight would be

32.7 g / e q

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