Which the following is an example of an organic compound that contains an attached carbonyl group at the end of a carbon chain?
ketone
aldehyde
ether
amine

Answer : The correct option is, Aldehyde.

Explanation :

Ketone group : It is the class of organic compound in which the group is attached to a hydrocarbon is known as ketone.

The general representation of ketone are, .

For example : Acetone,

Aldehyde group : It is the class of organic compound in which the group is attached to a hydrocarbon is known as aldehyde.

The general representation of aldehyde are, .

For example : Ethanal ,

Ether group : It is the class of organic compound in which the oxygen is directly attached to the two alkyl group of carbon is known as ether.

The general representation of ether are, .

For example : Dimethyl ether,

Amine group : It is the class of organic compound in which the group is directly attached to the alkyl group of carbon is known as amine.

The general representation of amine are, .

For example : Ethylamine,

As per question, aldehyde is an example of an organic compound that contains an attached carbonyl group at the end of the carbon chain.

Hence, the correct option is, Aldehyde.