How to identify saturated and unsaturated compounds ?

Explanation

(a) Law: .For energy action, there is an equal and opposite reaction.
They always act on two different bodies
`F_(B)=-F_(A)`.
Examples:
(i) When birds fly:
Push the air downwards with their wings-Action
Air push the bird upward-reaction.
(ii) When firing bullet:
Gun recoils backward and the bullet is moving forward-Action
Gun equals this forward action by moving backward-Reaction.
(b) * Take the given sample solution in a test tube.
* Add a few drops of bromine water
* If the given compound is unsaturated, it will decolourises bromine water.
* If the given compound is saturated it will not decolourise bromine water.