Question

2. write the structural formula of any two alkanes which do not show any isomerism.

Answer 1

Alkane does not show geometrical isomerism. They show only structural isomerism. For the alkanes which have 1, 2 or 3 carbon atoms it is not possible to get different chain structures and position isomers.As it is difficult get different structures for molecules which contains 3 or less than 3 -Carbon atoms.