Question

How many $1^o$ carbon atom will be present in a simplest hydrocarbon having two $3^o$ and one $2^o$ carbon atom?

• A. 3
• B. 4
• C. 5
• D. 6

Answer 1

Answer: (B)

4

The simplest hydrocarbon having two tertiary and one secondary carbon atom is 2,4-dimethyl pentane. It contains 4 primary carbon atoms. There are 4 $1^0$ carbon (4 $C{H}_3$ group).