Answer
Please see the explanation below.
Work Step by Step
We can find out the names of the required compounds as follows:
a. As the carbonyl has two alkyl groups attached to it which suggests that the compound is a ketone. We also know that there are five carbon atoms in the chain, hence the name of the compound is 2-pentanone.
b. As the carbonyl has hydrogen attached to it which means the compound is aldehyde. The name of the required compound is butanal.
