Propane is obtained from propene,by which of the following methods?

What is the number of carbon atoms in alkanes found in diesel?

For the reaction of $2-$methylbutane with $Cl_2$ in the presence of $hv$,let $N$ be the total number of isomeric monochlorinated products (including stereoisomers). If these products are separated by fractional distillation,let $M$ be the number of fractions obtained. Find the values of $N$ and $M$.

To prepare a pure sample of $n-$hexane using sodium metal as one reactant,the other reactant will be

$CH_3-CH_2-CH_2-CH_3 \xrightarrow[\Delta]{AlCl_3} CH_3-CH(CH_3)-CH_3$
The above reaction is an example of:

The number of shared pairs of electrons in propane is