Answer
So , generally the carbonyl functional group i:e C=O is present in the aldehydes and ketones
Work Step by Step
ketones have general formula $CnH_{2}nO$ they contain 2 hydrocarbon atom linked to carbonyl group with the alkyl group or the hydrogen atom .
for example - structure of ethenone is CH3-CH=0
aldehydes have general formula $CnH_{2n+1}CHO$ they contain hydrogen atom linked to the carbonyl group with the alkyl group or an other hydrogen atom .
for example - structure of butanone is CH3-CHO-CH2-CH3
