Which of the following is a sweet smelling substance? A. Ammonia B. Methanol C. Esters D. Ethanol

The correct answer is C. Esters.

Ammonia (A) is a pungent-smelling gas. Methanol (B) is a colorless, flammable liquid with a characteristic odor. Ethanol (D) is a colorless, flammable liquid with a characteristic odor.

Esters are a class of organic compounds that are formed by the reaction of an acid and an alcohol. They are often found in fruits and vegetables, and they are responsible for the characteristic flavors and aromas of many foods. Some esters are also used in perfumes and cosmetics.

Here are some examples of esters:

• Ethyl acetate, which is found in apples and bananas.
• Isoamyl acetate, which is found in raspberries and strawberries.
• Benzyl acetate, which is found in jasmine and roses.
• Vanillin, which is found in vanilla beans.