Assertion :Gram molecular weight of $O_{2}$ is $32$ . Reason: Relative atomic weight of oxygen is $32$ amu.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.

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Assertion is correct but Reason is incorrect.

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Assertion is incorrect but Reason is correct.

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Solution

The correct option is C Assertion is correct but Reason is incorrect.
The gram molecular weight of $O_{2}$ is $32$ and the relative atomic weight of oxygen is $16$ .

So, option C is correct.

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Assertion :Gram molecular weight of O2 is 32. Reason: Relative atomic weight of oxygen is 32 amu.

The correct option is C Assertion is correct but Reason is incorrect.The gram molecular weight of O2 is 32 and the relative atomic weight of oxygen is 16.So, option C is correct.

Assertion :Gram molecular weight of $O_{2}$ is $32$ . Reason: Relative atomic weight of oxygen is $32$ amu.

The correct option is C Assertion is correct but Reason is incorrect.
The gram molecular weight of $O_{2}$ is $32$ and the relative atomic weight of oxygen is $16$ .

So, option C is correct.