1.

Assertion : Dinegative anion of oxygen (O^(2-)) is quite common but dinegative anion of sulphur (S^(2-)) is less common. Reason : Covalency of oxygen is two.

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 a correct explanation of the assertion
If assertion is true but reason is false
If the assertion and reason both are false

Answer :B


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