Write the IUPAC names of the following

Explanation

(a) The structure of the compound can be written as
`CH_(3) - CH_(2) - underset(underset(underset(underset(CH_(3))(|))(CH_(2)))(|))overset(overset(overset(overset(CH_(3))(|))(CH_(2)))(|))(C) - CH_(2) - CH_(3)`
The IUPAC name is Diethylpentane.
(There is no need of giving numbering)
(b) The IUPAC name of the compound is 2-oxocyclohexane carboxylic acid. Carboxylic acid group should be given preference to keto group