possible alkenes which can produce g on hydrogenation are(also which do not gv acetone on ozonolysis)

 

1) 3-methylhex-1-ene

 

2)3-methylhex-2-ene

 

3)2ethylpent-1-ene

 

4)3-methylhex-3-ene

 

5)4-methylhex-2-ene

 

6)4-methylhex-1-ene

 

only 3 gives ketone containing more thanfive c atoms with KMnO₄