CBSE 2023 · Region 4 · Set 3 · Q18 · 1 mark
Assertion (A) : $\displaystyle \mathrm{E}_{\mathrm{Cu}}^{\circ} 2+/ \mathrm{Cu}$ is positive (+$\displaystyle 0.34$ V).
Reason (R) : Copper has high $\displaystyle \Delta_{\mathrm{a}} \mathrm{H}^{\circ}$ and low $\displaystyle \Delta_{\text {hyd }} \mathrm{H}^{\circ}$.
Official answer
From CBSE’s own marking scheme for this paper.
(A)
Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A).
Asked in 2 different years
- 2023 · Region 4 · Set 3 · Q18
- 2026 · Region 4 · Set 2 · Q16
ElectrochemistryElectrochemical CellsUnderstandassertion_reasonmedium
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Asked in 2023 & 2026. CBSE Class 12 Chemistry past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.