1.

Assertion : In smelting, roasted ore is heated with powdered coke in presence of a flux. Reason : Oxides are reduced to metals by C or CO. Impurities are removed as slag.

Answer»

If both Assertion and REASON are true and Reason is the correct EXPLANATION of Assertion.
If both Assertion and Reason are true and Reason is not the correct explanation of Assertion.
If Assertion is true and Reason is FALSE.
If Assertion is false and Reason is true

Answer :A


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