Question

write the chemical test of diffrence b/w saturated and unsaturated hydrocarbon

Answer 1

we can take.....
KMnO⁴ test as unsaturated fats turn it's pink color to colourless but saturated won't show any Reaction
or bromine water test as unsaturated fats or hydrocarbons turn bromine water to colourless from brown colour but not saturated hydrocarbons

Answer 2

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By adding  cold dilute Baeyer's reagnant

More about Baeyer's Reagnant.

• Baeyer's reagnant is cold dilute

• It is an oxidising agent.

If this mixture is added to an unsaturated compounds such as alkenes or alkanes then :

• Purple colour of  changes .

• It is first converted to a green compound   which is unstable in alkaline medium.

• This again changes to brown  

• The supernatant liquid gets decolourised.

However saturated compounds do not respond to the above test.

In simple words........... your answer is :

In order to test unsaturation first add cold dilute Baeyer's reagnant.

If the reagnant decolorises from purple to colourless then the compound is unsaturated

Otherwise if the reaction does not occur , then it is a saturated compound.

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