Assertion.Aluminothermy is used forextractionofchromiumfrom chromiumox – InterviewSolution

1.	Assertion.Aluminothermy is used forextractionofchromiumfrom chromiumoxide. Reason.Aluminareactswith carbonto fromaluminiumcarbidewhich decomposes at hightemperatureto from Al whilecarbonisoxidisedto CO.
Answer» Ifbothassertionandreasonaretrue, andreason is NOTTHE trueexplanationofthe ASSERTION. Ifbothassertionandreasonaretrue,butreasonis notthetrueexplanationoftheassertion. Ifassertionis true,butreason isfalse If bothassertionandreasonarefalse Solution :CORRECTEXPLANATION.` Delta_ rG ^(@)`of` Al _2 O_3`is morenegativethat of` Cr_ 2 O_3`.

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