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Science · 2024 · 1 mark
CBSE 2024 · Region 2 · Set 2 · Q20
Assertion (A) : Metals in the middle of activity series are found in nature as sulphides or carbonates.
Reason (R) : The sulphide ores are calcinated whereas carbonate ores are roasted to extract metals from them.
Official answer
From CBSE’s own marking scheme for this paper.
(C)
(A) is true, but (R) is false.
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CBSE Class 10 Science past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.