CBSE 2025 · Region 4 · Set 2 · Q13 · 1 mark
Assertion (A) : Cuprous salts are diamagnetic.
Reason (R) : In cuprous ion, 3d-orbitals are partially filled.
Official answer
From CBSE’s own marking scheme for this paper.
(C)
Assertion (A) is true, but Reason (R) is false.
The d-and f-Block ElementsGeneral Properties of the Transition Elements (d-Block)Understandassertion_reasonmedium
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CBSE Class 12 Chemistry past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.