Which compound is formed when an aldehyde reacts with 2,4-dinitrophenylhydrazine?
Q1. Which compound is formed when an aldehyde reacts with 2,4-dinitrophenylhydrazine?
Answer: 2,4-DNP derivative
Explanation: Aldehydes react with 2,4-dinitrophenylhydrazine to form 2,4-DNP derivatives, which are used for identification.