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Science · 2023 · 1 mark
CBSE 2023 · Region 1 · Set 1 · Q17
Assertion (A): The colour of aqueous solution of copper sulphate turns colourless when a piece of lead is added to it. Reason (R): Lead is more…
Assertion (A) : The colour of aqueous solution of copper sulphate turns colourless when a piece of lead is added to it.
Reason (R) : Lead is more reactive than copper, and hence displaces copper from its salt solution.
Official answer
(A)
Both (A) and (R) are true and (R) is the correct explanation of (A).
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CBSE Class 10 Science past-paper question from the 2023 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.