1.

Assertion : Equivalent weight of Cu in CuO is 63.6 and in Cu_(2)O 31.8. Reason : Equivalent weight of an element =("Atomic weight of the element")/("Valency of the element")

Answer»

If both assertion and reason are TRUE and the reason is the CORRECT explanation of the assertion.
If both assertion and reason are true but reason is not the correct explanation of the assertion.
If assertion is true but reason is false.
If assertion is false but reason is true.

Solution :Equivalent WT. of Cu in `CuO=63.6/2=("At. Wt.")/("VALENCY")=31.8`
Equivalent wt. of Cu in `Cu_(2)O=63.6/1=63.6`
(Valency of `Cu=1`).


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