Question

example of compounds having ester as functional group. At least 2....

Answer 1

Both carboxylic acids and esters contain a carbonyl group with a second oxygen atom bonded to the carbon atom in the carbonyl group by a single bond. In a carboxylic acid, the second oxygen atom also bonds to a hydrogen atom. ... The functional groups for an acid and for an ester are shown in red in these formulas

Answer 2

HERE IS YOUR ANSWER
1. POLYESTER
2.POLYTHENE