The number of shared pairs of electrons in propane is

What does petroleum mainly consist of?

The reaction $C_2H_5I + C_5H_{11}I + 2Na \to C_2H_5 - C_5H_{11} + 2NaI$ is called:

Which compound is formed when $CH_3OH$ reacts with $CH_3MgX$?

Arrange the following alkanes in decreasing order of their heats of combustion:
$(i)$ $CH_3-C(CH_3)_2-CH_3$ (Neopentane)
$(ii)$ $CH_3-CH(CH_3)-CH_2-CH_3$ (Isopentane)
$(iii)$ $CH_3-CH_2-CH_2-CH_2-CH_3$ ($n$-pentane)

Arrange the following alkanes in order of their boiling points:
$A$. Pentane
$B$. $2-$Methylbutane
$C$. $2,2-$Dimethylpropane