1.

Assertion. HNO_(3) renders iron passive. Reason. Iron reacts with HNO_(3) to form ferric nitrate.

Answer»

If both ASSERTION and reason are TRUE, and reason is the correct explanation of the assertion.
If both assertion and reason are ture, but reason is not the correct explanantion of the assertion.
If assertion is true, but reason is false.
If both assertion and reason are false

Solution :Correct reason. `HNO_(3)` reacts with Fe to form a thin impervious layer of ferrosoferric oxide `(FeO.Fe_(2)O_(3)-= Fe_(3)O_(4))` on the surface of iron which protects it form further action.


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