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Science · 2023 · 1 mark
CBSE 2023 · Region 2 · Set 2 · Q17
Assertion (A) : Sodium, calcium and magnesium are obtained by the electrolysis of their molten oxides. Reason $\displaystyle (R)$ : These metals have more affinity for oxygen than carbon.
Official answer
From CBSE’s own marking scheme for this paper.
(D)
Assertion (A) is false, but Reason (R) is true.
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CBSE Class 10 Science past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.