Which of the following is a derivative of carboxylic acid?

Which of the following is a derivative of carboxylic acid?

Correct Answer: Ester

Step 1: Understand what a carboxylic acid is. It is a type of organic compound that has a carboxyl group (-COOH).
Step 2: Learn about derivatives of carboxylic acids. These are compounds that are formed from carboxylic acids by replacing the -OH group.
Step 3: Identify one common derivative of carboxylic acids, which is an ester.
Step 4: Know how esters are formed. They are created when a carboxylic acid reacts with an alcohol, replacing the -OH group with an -O- group from the alcohol.
Step 5: Conclude that since esters are formed from carboxylic acids, they are indeed derivatives of carboxylic acids.

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