A primary aliphatic amine on reaction with nitrous acid in cold 273   K and there after raising temperature of reaction mixture to room temperature 298   K , gives a/an

Step-by-step solution

A primary aliphatic amine on reaction with nitrous acid in cold gives a diazonium salt, but diazonium salt of aliphatic amines are not much stable, so, they dissociate on increasing temperature slightly and gives alcohol with water. R - NH 2 → 273 ° C HNO 2 aq RN 2 + → H 2 O 283 ° C R - OH + N 2