Question

Which of the following alkanes on halogenation gives only only one monohalogenated product?

• A. 2-methylbutane
• B. 2,2-dimethylpropane
• C. Cyclopentane
• D. Both (b) and (c)

Answer 1

The correct option is D Both (b) and (c)

Halogenation :
When one or more H atoms of an alkane are replaced by halogens, the reaction is called as a halogenation reaction.
It takes place at high temperature (573 to 773K) and in presence of diffused or ultraviolet (UV) light.

For 2-methylbutane, 4 mono halogenated products are possible as shown:
For (b) and (c) : All the carbon atoms are similar and mono halogenation at any carbon atom gives a single product.
Hence, the correct answer is option (d).