Which compound is formed when propanal reacts with semicarbazide?
Semicarbazide reacts with the carbonyl group of propanal (CH₃CH₂CHO) to form propanal semicarbazone (CH₃CH₂CH\=NNHCONH₂).
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Nomenclature, Structure and Preparation of Aldehydes and Ketones