Question

Which of the following can easily be oxidized alkane or alkene or alkyne

Answer 1

The one which can be easily oxidized among alkene, alkane and alkyne is alkenes.

Alkenes react better in oxidation reactions than alkynes because alkenes are  form a stable compound ozonoid which is most stable in case of alkenes hence oxidation is easiest in alkenes.

Other reason is that oxidative cleavage in double bond is much easier and stable as compared to triple bond of alkynes hence ozonoid most stable hence addition of oxygen is easiest in alkenes.

Alkanes don't give addition reactions.

So among alkane ,alkenes and alkynes most easily oxidized is alkenes.