Which compound gives a silver mirror with Tollens' reagent but not a yellow precipitate with iodoform reagent?
Propanal (CH₃CH₂CHO) is an aldehyde (positive Tollens' test) but lacks a CH₃C\=O group (negative iodoform test).
Ref: NCERT Class 12 Chemistry > Chapter 12: Aldehydes, Ketones and Carboxylic Acids > Topic: Nomenclature, Structure and Preparation of Aldehydes and Ketones