can 2,4 dnp test be used for amide acid chloride carboxylic acid

No, 2,4-DNP test is not used to distinguish amide, ester and carboxylic acid.

Kindly refer to the similar link:

https://www.meritnation.com/ask-answer/question/why-carboxylic-acid-do-not-give-the-characteristic-reaction/chemistry/4043988