Question

How can we distinguish saturated hydrocarbons and unsaturated hydrocarbons experimentally

Answer 1

Bromine water test... bromine water is brown, and can be decolourised by unsaturated hydrocarbons (due to the addition reaction of Br2 across the double or triple carbon-carbon bonds). Saturated hydrocarbons do not react with bromine water in the absence of UV light, and so the brown colour persists.

Answer 2

By the froath process