CBSE 2023 · Region 4 · Set 2 · Q2 · 1 mark

For the reaction $\displaystyle \mathrm{A}+2 \mathrm{~B} \longrightarrow \mathrm{C}+\mathrm{D}$, the rate law is given by $\displaystyle \mathrm{r}=\mathrm{k}[\mathrm{A}][\mathrm{B}]^{2}$, the concentration of A is kept constant while that of B is doubled. The rate of the reaction will :

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.