Give a test that can be used to differentiate chemically between butter and cooking oil.
Give a test that can be used to differentiate between saturated and unsaturated hydrocarbons.
Bromine water test can be used to chemically differentiate between a butter (Saturated) and cooking oil (Unsaturated).
Take two test tubes, one with a small amount of butter in it and the other with some cooking oil.
Add bromine water to both the test tubes.
(1) Cooking oil decolourises bromine water indicating that it is an unsaturated compound.
(2) Butter does not decolourise bromine water indicating that it is a saturated compound.