What kind of smell do Esters have?

Correct option is A

The answer is (a) Sweet smell like fruits.
Esters are known for their sweet, fruity aromas, which is why they are often used in fragrances and flavorings.
Esters are organic compounds derived from an acid (often a carboxylic acid) where at least one -OH (hydroxyl) group is replaced by an -O-alkyl (alkoxy) group. They are commonly formed by a reaction between an acid and an alcohol with the elimination of water, a process known as esterification.
Types of Esters:
 Simple Esters: Typically derived from a carboxylic acid and an alcohol. They have straightforward structures and are usually the type associated with fruity aromas.
 Phosphate Esters: These are more complex and are often used in industrial applications such as flame retardants and plasticizers.
 Polyesters: Polymers made from ester linkages. They are crucial in the production of a variety of plastics and fibers like PET used in beverage bottles and clothing.