carbon and its compounds — Science STD 10 — Question
Gujarat BoardEnglish MediumSTD 10Sciencecarbon and its compounds2 Marks
Question
Give a test that can be used to differentiate between saturated and unsaturated hydrocarbons.
✓
Answer
Butter contains saturated fats while cooking oil contains unsaturated fats.
Unsaturated compound decolourise the pink colour of alkaline $\mathrm{KMnO}_4$ solution.
When butter is treated with a few drops of alkaline $\mathrm{KMnO}_4$ solution, the pink colour of $\mathrm{KMnO}_4$ does not disappear, while, when cooking oil is treated with a few drops of alkaline $\mathrm{KMnO}_4$ solution, its pink colour disappears.
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