Give a chemical test to distinguish between butter and cooking oil. – InterviewSolution

1.	Give a chemical test to distinguish between butter and cooking oil.
Answer» Butter and cooking oil can be distinguished by using alkaline KMnO₄. Being unsaturated only cooking oil decolourises the pink colour of alkaline KMnO₄ whereas butter does not because it is saturated. Bromine water test is also used where brown colour is discharged by the cooking oil.

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