Assertion :Al obtained only by electrolytic reduction of Alumina (pure) Reason: Aluminium metal has a strong affinity for oxygen and the oxide of Al is $A l_{2} O_{3}$ , which is a very stable oxide. Hence ordinary chemically reducing agents are not sufficient to reduce $A l_{2} O_{3}$ to Al.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
Aluminium metal has a strong affinity for oxygen and the oxide of Al is $A l_{2} O_{3}$ , which is a very stable oxide. Hence, ordinary chemically reducing agents are not sufficient to reduce $A l_{2} O_{3}$ to Al. Electrolytic reduction is a more powerful reduction method.

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Assertion :Al obtained only by electrolytic reduction of Alumina (pure) Reason: Aluminium metal has a strong affinity for oxygen and the oxide of Al is Al2O3, which is a very stable oxide. Hence ordinary chemically reducing agents are not sufficient to reduce Al2O3 to Al.

Assertion :Al obtained only by electrolytic reduction of Alumina (pure) Reason: Aluminium metal has a strong affinity for oxygen and the oxide of Al is $A l_{2} O_{3}$ , which is a very stable oxide. Hence ordinary chemically reducing agents are not sufficient to reduce $A l_{2} O_{3}$ to Al.