A compound X on reduction with H₂/Ni gives CH₃CH₂NH₂. X is:
Nitroethane (CH₃CH₂NO₂) is reduced to ethylamine (CH₃CH₂NH₂) with H₂/Ni, as per the PDF’s preparation methods.
Ref: NCERT Class 12 Chemistry > Chapter 13: Amines > Topic: Chemical Reactions of Amines - Mixed Concept Practice