Chemistry
Assertion (A): Reactive metals like calcium, magnesium cannot be obtained by reduction.
Reason (R): Reactive metals have a great affinity towards oxygen
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Metallurgy
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Answer
Both A and R are true and R is the correct explanation of A.
Explanation — Highly reactive metals like calcium, magnesium have great affinity towards oxygen and so cannot be reduced by common reducing agents like coke (carbon), carbon monoxide or hydrogen. Such metals are obtained by electrolytic reduction. Hence, both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).
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