Question

Which of the following functional groups comprises a carbon atom bonded to a hydroxyl group?

A. ester
B. alcohol
C. thiol
D. carbonyl

Answer 1

B. alcohol

Hydroxyl group is an -OH branch

so,

R - OH is alcohol

Answer 2

The correct option is: B. alcohol

Step-by-step explanation:

A. ester (R-COOR'): In this functional group, the carbon atom forms a single bond with an alkoxy group and a double-bond with an oxygen atom.

B. alcohol (R-COH): In this functional group, the carbon atom is bonded to a hydroxyl group.

C. thiol (R-SH): In this functional group, the carbon atom is bonded to a thiol group.

D. carbonyl (R-COR'): In this functional group, the carbon atom forms a double-bond with an oxygen atom.

Therefore, alcohols are the class of organic molecules in which a carbon atom is bonded to a hydroxyl functional group.