Question

Which of these molecules are carboxylic acids? check all that apply?

Answer 1

carboxylic acid should contain COOH group

Answer 2

The given question is incomplete, the complete question is attached below.

Answer :

The correct option is, E.

Explanation :

Carboxylic acid is a functional group in which the the
`-COOH` group is directly attached to the end of alkyl group of carbon.

The general formula of carboxylic acid is,
`R-COOH`

Aldehyde is a functional group in which the the
`-CHO` group is directly attached to the end of alkyl group of carbon.

The general formula of aldehyde is,
`R-CHO`

Alcohol is a functional group in which the the
`-OH` group is directly attached to the end of alkyl group of carbon.

The general formula of alcohol is,
`R-OH`

Hence, the correct option is, E.