CBSE 2025 · Region 5 · Set 1 · Q17 · 1 mark
Assertion (A) : Silver chloride turns grey in sunlight.
Reason (R) : Decomposition of silver chloride into silver and chlorine takes place by sunlight.
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).
Chemical Reactions and EquationsCombination and Decomposition ReactionsAnalyseassertion_reasoneasy
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CBSE Class 10 Science past-paper question from the 2025board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.