Short Answer Type
Long Answer TypeShort Answer TypeLong Answer TypeShort Answer TypeArrange benzene, n-hexane and ethyne in decreasing order of acidic behaviour. Also give reason for his behaviour.
Give simple chemical test for the distinction of:
(i) Propyne and propane
(ii) But-1-yne and But-2-yne.
How will you separate acetylene from a mixture of acetylene and ethylene?
Bubble the gaseous mixture through an ammoniacal solution of silver nitrate (Tollen's reagent) when acetylene products white precipitate of disilver acetylide. Ethylene will remain in the gaseous state and can be separated. 
The precipitate is separated, treated immediately with dilute HNO3 to get back acetylene in pure form.
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