Question

What is the IUPAC name for (CH3)2COH(CH2)2CH3?

Answer 1

The answer is: B. 2-methylpentan-2-ol.

A functional group is a group of atoms that determines many of the properties of an organic molecule.  

Functional group for alcohol is hydroxyl group or hydroxy group (-OH).

Methyl group (-CH₃) is attached to second carbon atom of pentanol, that i why the name is 2-methyl.

Hydroxy group (-OH) is attached to second carbon atom of pentanol, that i why the name is 2-pentanol.