What effect does branching of an alkane chain have on its boiling point?

How many pairs of enantiomers are formed during the monochlorination of $2$-methylbutane?

$CH_4$ gas is obtained in :-
$(a)$ Hydrolysis of $Al_4C_3$
$(b)$ Hydrolysis of $Be_2C$
$(c)$ Hydrolysis of $Mg_2C_3$
$(d)$ Hydrolysis of $CaC_2$

With which of the following substances does $CH_2N_2$ (diazomethane) react differently?

Which of the following products is obtained by the controlled oxidation of methane in the presence of copper catalyst at $523 \ K$ and $100 \ atm$?

Identify the initiation step$(s)$ $(X)$ and termination step$(s)$ $(Y)$ of free radical chlorination of $CH_4$ from the following:
$a) \dot{C}H_3 + \dot{Cl} \rightarrow CH_3-Cl$
$b) \dot{Cl} + \dot{Cl} \rightarrow Cl_2$
$c) \dot{C}H_3 + Cl_2 \rightarrow CH_3-Cl + \dot{Cl}$
$d) Cl_2 \rightarrow 2\dot{Cl}$
$e) CH_4 + \dot{Cl} \rightarrow \dot{C}H_3 + HCl$
$f) \dot{C}H_3 + \dot{C}H_3 \rightarrow CH_3-CH_3$