The reagent which is used to distinguish between propene and propyne is

Bromine

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Alkaline

K M n O_{4}

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Ammoniacal

A g N O_{3}

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Ozone

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Solution

The correct option is C Ammoniacal $A g N O_{3}$
Tollen's reagent (ammoniacal silver nitrate) reacts with terminal acetylenes to form the silver acetylide which precipitates out of solution

RC ≡ CH+AgNO3+NH4OH⟶RC ≡ CAg↓+NH4NO3+H2O

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