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Assertion. Aluminothermy is used for e...

Assertion. Aluminothermy is used for extraction of chromium from chromium oxide.
Reason. Alumina reacts with carbon to from aluminium carbide which decomposes at high temperature to from Al while carbon is oxidised to CO.

A

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

B

If both assertion and reason are true, but reason is not the true 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:
B
Correct explanation. ` Delta _ r G ^(@) ` of ` Al _ 2 O _ 3 ` is more negative that of ` Cr_ 2 O _ 3`.
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