Q. Which of the following compounds has incorrect IUPAC nomenclature?

A) $\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ O$ $\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \parallel$ $CH_{3}\ CH_{2}\ CH_{2}\ COC_{2}\ H_{5}\$ ethylbutanoate
B) $CH_{3}CHCH_{2}CHO$ | $\ \ \ \ \ \ CH_{3}$ 3-methyl butanal
C) $\ \ \ \ \ \ \ \ \ \ \ \ \ O$ $\ \ \ \ \ \ \ \ \ \ \ \ \ \ \parallel$ $CH_{3}CHCCH_{2}CH_{3}$ | $\ \ \ \ \ \ \ CH_{3}$ 2-methyl-3-pentanone
D) $CH_{3}CHCHCH_{3}$ | | $\ \ H_{3}C\ \ \ \ OH$ 2-methyl-3-butanol
Explanation

(d)
$CH_{3} - CH - CH - CH_{3}$
| |
$\ \ \ \ \ \ \ \ \ \ \ \ \ \ {CH}_{3}\ \ \ OH$
2-methyl butan-2-ol

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.