Esters have the functional group -COOR (or -COO-), where R is an alkyl or aryl group.
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JEE Main 2020 — Chemistry Organic Chemistry
easy
mcq
2020
Official previous-year question
Verified 30 May 2026.
Question
Which functional group is present in an ester?
Options
- A-COOH
- B-CHO
- C-COOR
- D-CO-
Solution
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