Which among the following reagents is used for the conversion of alkanes into an alcohol?

Wurtz reaction of methyl iodide yields an organic compound $X$. Which one of the following reactions also yields $X$?

Consider the given sequence of reactions.
$C_2H_6 + \frac{3}{2}O_2$ $\xrightarrow[\Delta]{(CH_3COO)_2Mn} X$ $\xrightarrow{NaOH} Y$
Electrolysis of aqueous solution of $Y$ gives gases $P$ and $Q$ at anode. $P$ and $Q$ are respectively.

For complete combustion of $10 \ L$ of alkane,the volume of oxygen required is $50 \ L$. Identify the alkane.

Among the following free radical bromination reactions,select those in which a $2^o$ halide is the major product. The reactions are as follows:
$(P)$ Cyclohexane + $Br_2/hv$
$(Q)$ Methylcyclobutane + $Br_2/hv$
$(R)$ Ethylbenzene + $Br_2/hv$
$(S)$ $3-$Methylhexane + $Br_2/hv$
$(T)$ Decalin + $Br_2/hv$
$(U)$ Butane + $Br_2/hv$

In which of the following reactions is the product not an alkane?