CBSE 2023 · Region 2 · Set 2 · Q12 · 1 mark
For a reaction $\displaystyle 2 \mathrm{~A} \rightarrow 3 \mathrm{~B}$, rate of reaction $\displaystyle -\frac{\mathrm{d}[\mathrm{A}]}{\mathrm{dt}}$ is equal to $\displaystyle 1$
Official answer
From CBSE’s own marking scheme for this paper.
(B)
$\displaystyle \frac{+2}{3} \frac{\mathrm{~d}[\mathrm{~B}]}{\mathrm{dt}}$
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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.