Question

homologous series definition simple

Answer 1

A series of compounds in which the same functional substitutes hydrogen in a carbon chain is called a homologous series....eg.2H3C1 and C2H5C1 differ by a -CH2 unit..:-D

Answer 2

when we start adding CH2 in an carbon chain then it starts becoming a homologous series... eg ...
methane
ethane
propane and so on...
it is impossible to draw and tell properly...sorry for that ....
hope it may help u