$(a)$ It has rotten egg like small
$(b)$ In aquous solution and presence of light it yields white phosphorous and hydrogen
$(c)$ It explodes with $Br_2$
$(d)$ In pure form it is non inflammable
$\mathrm{PH}_{3}(\mathrm{aq}) \stackrel{\mathrm{Light}}{\longrightarrow} \mathrm{Red}^{\prime} \mathrm{P}^{\prime}+\mathrm{H}_{2}$
$\mathrm{PH}_{3} \frac{\text { oxidising agents }}{\mathrm{HNO}_{3} / \mathrm{Cl}_{2} / \mathrm{Br}_{2}}$ explodes
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$\mathrm{A}(\mathrm{g}) \rightarrow 2 \mathrm{~B}(\mathrm{~g})+\mathrm{C}(\mathrm{g})$
| S.No | Time/s | Total Pressure/(atm) |
| $1.$ | $0$ | $0.1$ |
| $2.$ | $115$ | $0.28$ |
The rate constant of the reaction is_____$\times 10^{-2} \mathrm{~s}^{-1}$ (nearest integer)