Which of the following is/are incorrect IUPAC names
(A) 2-ethyl-3-methylpentane
(B) 4-formyl butanamide
(C) 2,3-dimethyl cyclohexene
(D) 3-carboxy pentanoic acid

The correct IUPAC name of 2- ethyl -3- pentyne is

The IUPAC name of Is 2-Ethyl-3-methylpent-2-en-1-aI.

Which of the following IUPAC name is incorrect? (i) 2 -Methyl- 3 -ethylpentane (ii) 2 -Ethyl- 3 -methylpentane (iii) 3 -Methyl- 2 -ethylpentane (iv) 3 -Ethyl- 2 -methylpentane.

Which of the following represents the correct IUPAC name of the compounds concerned ? (a) 2, 2-Dimethylpentane or 2-Dimethylpentane (b) 2, 3-Dimethylpentane or 3, 4-Dimethylpentane (c) 2, 4, 7-Trimethyloctane or 2, 5, 7-Trimethyloctane. (d) But-3-yn-1-ol ot But-4-ol-1-yne

Correct IUPAC name of (A) 3- keto -2- methyl hexanal (B) 2- formylhexane -3 - one (C) 5- formyl -4 - hexanone (D) 2- formyl - hexane -4 - one

What is the correct IUPAC name of 3-methyl-4-ethyl-6-propylhexanoic acid?

Write the structure for the compounds having the IUPAC names : (a) 3-Ethyl-2-methylpentane " " (b) 2, 3, 5-Trimethylhexane (c) 2,3,5-Trimethyl-4-propylheptane