STD 12 - 6. Haloalkanes and Haloarenes — JEE STD 11 Science — Question

$(A)$ $P$ can be reduced to a primary alcohol using $NaBH _4$.

$(B)$ Treating $P$ with conc. $NH _4 OH$ solution followed by acidification gives $Q$.

$(C)$ Treating $Q$ with a solution of $NaNO _2$ in aq. $HCl$ liberates $N _2$.

$(D)$ $P$ is more acidic than $CH _3 CH _2 COOH$.

Statement $I$: $\mathrm{S}_8$ solid undergoes disproportionation reaction under alkaline conditions to form $\mathrm{S}^{2-}$ and $\mathrm{S}_2 \mathrm{O}_3{ }^{2-}$

Statement $II$: $\mathrm{ClO}_4^{-}$can undergodisproportionation reaction under acidic condition. In the light of the above statements, choose the most appropriate answer from the options given below :

$A : 1s^2\, 2s^2\, 2p^6$

$B : 1s^2\, 2s^2\, 2p^6\, 3s^2\, 3p^3$

$C : 1s^2\, 2s^2\, 2p^6\, 3s^2\, 3p^5$