Hydrocarbons Question 315
Question: Which one of the following contain isopropyl group [BHU 2005]
Options:
A) 2,2,3,3-tetramethylpentane
B) 2-methylpentane
C) 2,2,3-trimethylpentane
D) 3,3-dimethylpentane
Show Answer
Answer:
Correct Answer: B
Solution:
$ \underset{\text{2,3,3,3-tetramethylpentane}}{\mathop{H_3C-\overset{CH_3CH_3}{\mathop{\overset{||}{\mathop{\underset{CH_3CH_3}{\mathop{\underset{||}{\mathop{H_2C-C-C-CH_3}}}}}}}}}} $
$ \underset{\text{isopropyl group 2-methylpentane}}{\mathop{H_3C-H_2C-\overset{CH_3}{\mathop{\overset{|}{\mathop{H_2C-HC-CH_3}}}}}} $
$ \underset{\text{2, 2, 3-trimethylpentane}}{\mathop{\underset{CH_3}{\mathop{\underset{|}{\mathop{\overset{CH_3CH_3}{\mathop{\overset{||}{\mathop{H_3C-H_2C-HC-C-CH_3}}}}}}}}}} $
$ \underset{\text{3, 3-dimethylpentane}}{\mathop{\underset{CH_3}{\mathop{\underset{|}{\mathop{\overset{CH_3}{\mathop{\overset{|}{\mathop{H_3C-H_2C-C-CH_2-CH_3}}}}}}}}}} $
BETA
