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Chemistry · 2026 · 1 mark
CBSE 2026 · Region 5 · Set 1 · Q7
Half-life ( t_1 / 2) of a first order reaction is 1386 s. The value of rate constant is:
Half-life $\displaystyle \left(\mathrm{t}_{1 / 2}\right)$ of a first order reaction is $\displaystyle 1386$ s. The value of rate constant is :
Official answer
(B)
$\displaystyle 5.0 \times 10^{-4} \mathrm{~s}^{-1}$
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