1.

Assertion : One mole of SO_(2) contains double the number of molecules present in one mole of O_(2) Reason : Molecular weight of SO_(2) is double to that of O_(2).

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 :One mole of any substance corresponding to `6.023xx10^(23)` entities is respective of its weight.
MOLECULAR weight of `SO_(2)=32+2xx16=64 gm`.
Molecular weight of `O_(2)=16xx2=32 gm`.
`:.` Molecular weight of `SO_(2)` is double to that of `O_(2)`.


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