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Science · 2023 · 1 mark
CBSE 2023 · Region 4 · Set 1 · Q2
When aqueous solutions of potassium iodide and lead nitrate are mixed, an insoluble substance separates out. The chemical equation for the reaction involved is:
Official answer
From CBSE’s own marking scheme for this paper.
(B)
$\displaystyle 2 \mathrm{KI}+\mathrm{Pb}\left(\mathrm{NO}_{3}\right)_{2} \rightarrow \mathrm{PbI}_{2}+2 \mathrm{KNO}_{3}$
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CBSE Class 10 Science past-paper question from the 2023board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.