How will you convert:
(i) Propyne into acetone
(ii) Ethyne into propyne?

Discuss in brief the oxidation reactions of alkynes.

Write briefly the polymerisation reactions of alkynes.

194.

How will you convert ethanoic acid into benzene ?

Discuss the acidic character of alkynes. 

Alkynes are acidic in nature, whereas alkenes and alkanes are not. Explain.

Arrange 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?