What is wrong with the names given for these compounds ? Provide the correct name for each.

Explanation

(i) The parent chain has six carbon atoms and not five
Correct IUPAC name : 3-Methylhex-3-ene
(ii) The lowest set of locant rule has not been followed
Correct IUPAC name : 2,7,8-Trimethyldecane
(iii) Lowest number has not been given to the locant for the secondary suffix.
Correct IUPAC name : Pent-4-yn-2-ol
(iv) The functional group is a N-methylamine
Correct IUPAC name : N-Methylbut-3-enamine
(v) Ring has more carbon atoms than the alkyl group
Correct IUPAC name : Propylcyclohexane
(vi) Lowest sum rule has not been followed
Correct IUPAC name : 1,2,4-Trimethylcyclopentane
(vii) Lowest number has been given to the lacant for the prefix and not to en.
Correct IUPAC name : 3-Chlorocyclopentene.