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Question

Assertion :An element may have variable equivalent mass. Reason: Such elements should possess variable valency.

A
Assertion is correct but Reason is wrong.
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B
Assertion is wrong but Reason is correct.
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C
Both Assertion and Reason are correct and Reason is correct explanation of Assertion.
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D
Both Assertion and Reason are correct and Reason is incorrect explanation of Assertion.
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Solution

The correct option is C Both Assertion and Reason are correct and Reason is correct explanation of Assertion.
As we know,
Equivalentmass=molarmassnfactor
  • Equivalent mass is a pure number. When expressed in gram, it is called gram equivalent mass.
  • The equivalent mass of substance may have different values under different conditions (under variable valency).

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