CBSE 2024 · Region 2 · Set 2 · Q10 · 1 mark

Half-life period of a first order reaction is $\displaystyle 1386$ seconds. The rate constant (k) of the reaction is :

A

$\displaystyle 0.5 \times 10^{-3} \mathrm{~s}^{-1}$

B

$\displaystyle 5.0 \times 10^{-3} \mathrm{~s}^{-1}$

C

$\displaystyle 5 \times 10^{-2} \mathrm{~s}^{-1}$

D

$\displaystyle 0.5 \times 10^{-2} \mathrm{~s}^{-1}$

Check answer

CBSE Class 12 Chemistry past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.