1.

Assertion: Zn gives H_(2) gas with dil. HCl and also with dil. H_(2)SO_(4). Reason : In different medium, change in oxidation number shown by mangnese is altogether different.

Answer»

If both ASSERTION and reason are true and the reason is the correct explanation of assertion
If both assertion and reason are true and the reason is not the correct explanation of assertion
If assertion is false but reason is true
If assertion is true but the reason is false

Solution :`Zn+underset("dil")(2HCl) to ZnCl_(2)+H_(2)(UARR)`
`Zn+underset("dil")(H_(2)SO_(4)) to ZnSO_(4)+H_(2)(uarr)`
`4Zn+underset("dil")(10HNO_(3)) to 4Zn(NO_(3))_(2)+N_(2)O+5H_(2)O`


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