Question

Chemical test to distinguish between pent-1-ene and pent 1yne

Answer 1

Pent-1-yne is a terminal alkyne which gives grey colour precipitate of silver alkynide with ammoniacal silver nitrate solution and Pent-2-yne will not answer this test.

CH3CH2CH2C≡CH +AgNO3+NH4OH→CH3CH2CH2C≡CAg↓+NH4NO3+H2O

Answer 2

Tollens reagent test...