$A$ mixture of propene and methane is obtained by the cracking of

The highest boiling point is expected for

Which of the following yields both alkane and alkene?

Identify the total number of carbon atoms present in undecane.

$A$ dibromo derivative of an alkane reacts with sodium metal to form an alicyclic hydrocarbon. The derivative is

Arrange the following in decreasing order of their boiling points:
$(A)$ $2-$Methylbutane
$(B)$ $2,2-$Dimethylpropane
$(C)$ Pentane
$(D)$ Hexane