Question

In the structure, the number of carbons are:

• A. One primary, two secondary and one tertiary
• B. Four primary, two tertiary and one secondary
• C. One primary, one secondary, one tertiary and one quaternary
• D. Five primary, one secondary, one tertiary and one quaternary

Answer 1

The correct option is D Five primary, one secondary, one tertiary and one quaternary

a,f,g,h,e are $1^{\circ }$
b=$3^{\circ }$, c=$2^{\circ }$, d=$4^{\circ }$

Primary carbon are those which is attached to one carbon atom only, secondary carbon are those which is attached to two carbon atoms, tertiary carbon are those which is attached to three carbon atoms, and quaternary carbon are those which is attached to three carbon atoms.