Question

Minimum carbon atoms are required to form a branched chain hydrocarbon.

• A. three
• B. four
• C. five
• D. six

Answer 1

The correct option is B four

To form a branched chain hydrocarbon, principal carbon chain should have at least three carbon atoms. And the smallest possible branch is methyl ($-{\mathrm{CH}}_3$) which has one carbon atom. Thus, minimum four carbon atoms are required to form a branched chain hydrocarbon.