From the following, which is NOT an alcohol?
A. Ethanol.
B. Methanol.
C. Glycerine.
D. Sodium hydroxide.
Alcohols are organic compounds in which the hydroxyl group has been substituted for one or more hydrogen atoms in a hydrocarbon. ROH is the general formula for alcohols. Methanol, ethanol, and glycerine are all alcohols. Glycerine is an alcohol, even though it has three hydroxyl groups. In fact glycerine is a polyalcohol. Sodium hydroxide is a base and not an alcohol.