Question

Write the IUPAC names of the following ketones and aldehydes: CH₃(CH₂)₅CHO, Wherever possible, give also common names.

Answer 1

The IUPAC name of CH3(CH2)5CHO will be Heptanal.  

The first step is to cover the longest chain, you need to make sure that a maximum number of carbon atoms are covered up by the chain.

Then you will cover the child chain and will attack it with the number on which the child is attached to.