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Science · 2023 · 1 mark
CBSE 2023 · Region 2 · Set 1 · Q3
In order to balance the following chemical equation, the values of the coefficients x and y respectively are : \[\mathrm{x} \mathrm{~Pb}\left(\mathrm{NO}_{3}\right)_{2} \xrightarrow{\text { Heat }} 2 \mathrm{PbO}+\mathrm{y} \mathrm{NO}_{2}+\mathrm{O}_{2} \]
Official answer
From CBSE’s own marking scheme for this paper.
(A)
$\displaystyle 2, 4$
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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.