The correct answer is: ester.
An ester is a chemical compound that is formed when an acid reacts with an alcohol. The general formula for an ester is R-COO-R’, where R and R’ are alkyl groups. Esters are typically liquids with pleasant odors. They are used in a variety of products, including perfumes, cosmetics, and food flavorings.
When an ester is heated in the presence of an acid or base, it undergoes hydrolysis to form an alcohol and a carboxylic acid. The reaction is as follows:
R-COO-R’ + H2O â R-OH + R’-COOH
The hydrolysis of esters is an important reaction in organic chemistry. It is used to produce alcohols and carboxylic acids, which are used in a variety of products.
The other options are incorrect because they are not esters. Ethanol is a type of alcohol, methanol is a type of alcohol, and ketone is a type of ketone.