Complete combustion of $CH_4$ gives

Acetic acid is reacted with metallic sodium to form hydrogen and $X$. When $X$ is heated with sodalime,$Y$ and sodium carbonate are formed. $Y$ is

Of the $5$ isomeric hexanes,the isomer which can give $2$ monochlorinated compounds is

$CH_3-CH(CH_3)-CH_2-CH_3 \xrightarrow[h\nu]{Cl_2}$
Number of chiral centers generated during monochlorination in the above reaction

Which of the following reactions does not produce propane?

$2, 6-\text{Dimethylheptane}$ on monochlorination produces $...$ derivatives.