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Assertion : Aluminothermy is used for ex...

Assertion : Aluminothermy is used for extraction of chromium from chromium oxide.
Reason : Alumina has a high melting point.

A

If both (A) and (R) are correct and (R) is the correct explanation of(A).

B

If both (A) and (R) are correct, but (R) is not the correct explanation of (A).

C

If (A) is correct, but (R) is incorrect.

D

If both (A) and (R) are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
B
`Delta_r G^(@)` of `Al_2O_3` is more negative than that of `Cr_2O_3` .
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