Which reactions are difficult for alkanes?

Arrange the following in increasing order of boiling point.
$(i)$ methane,butane,propane,pentane,ethane.
$(ii)$ $n$-pentane,neo-pentane,iso-pentane.
$(iii)$ ethane,$2$-methyl propane,propane,$n$-butane.
$(iv)$ $2$-methyl pentane,$2,2$-dimethyl butane,$2,2$-dimethyl propane.

Weight $(g)$ of two moles of the organic compound,which is obtained by heating sodium ethanoate with sodium hydroxide in the presence of calcium oxide is:

$X$ is an isomer of $C_6H_{14}$. It has four primary carbons and two tertiary carbons. '$X$' can be prepared from which of the following reactions?

The reaction,$CH_3Br + Na \to$ Product,is called

When sodium reacts with ethyl iodide,which of the following hydrocarbons is produced?