Question

Of the five isomeric hexanes, the isomer which can give two monochlorination compound is:

• A. n-hexane
• B. 2, 3-dimethylbutane
• C. 2, 2-dimentylbutane
• D. 2-methylpentane

Answer 1

Answer: (B)

2, 3-dimethylbutane

The isomeric hexane should have two different types of H atoms and four similar types of H atoms to gives two monochlorinated products.

In 2,3-dimethyl butane, two carbons having tertiary H atoms are the same and at four primary carbons rest of the H are the same. So, two position are available for chlorination.

Hence, option B is correct.