Question

give the method to prepare the alkanes ,alkenes and alkynes in laboratory?

Answer 1

ALKANES--
They can be prepared by adding sodium propanoate/ sodium ethenoate to soda lime.

Answer 2

☞Answer☜

Laboratory method of preparation of dihydrogen

Hydrogen is prepared in the laboratory by the action of the dilute hydrochloric acid or dilute sulphuric acid on granulated zinc.

Use of Granulated Zinc.

Reaction:

Collection of Gas: Hydrogen gas is collected by downward displacement of water.