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Assertion. HNO(3) renders iron passive. ...

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

A

If both assertion and reason are true, and is the correct explanation of the assertion.

B

If both assertion and reason are true, but reason is not the correct explanation of the assertion.

C

If assertion is true, but reason is false.

D

If both assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
C
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 from further action.
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