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Aluminium is more reactive than iron. Bu...

Aluminium is more reactive than iron. But aluminium is less easily corroded than iron because.

A

It is a noble metal

B

Oxygen forms a protective oxide layer

C

Iron undergoes reaction easily with water

D

Fe forms mono and divalent ions.

Text Solution

Verified by Experts

The correct Answer is:
B
The lesser (or almost no) corrosion of Al as compared to Fe is due to the formation of a protective oxide cover over Al.
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Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R ). Mark the correct choice as: Assertion : Aluminium is more reactive than iron. Reason : Its corrosion is less than that of iron.