191.

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.

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?