Question

Differentiate b/w saturated and unsaturated compounds.
Why we need to keep sodium metal in the kerosine???

Answer 1

• saturated compounds are having single bond whereas the unsaturated compounds have double or triple bonds.
• they don't decolourise bromine in bromine water test. whereas unsaturated compounds change colour.


Sodium is very reactive so to prevent the reaction it is kept in kerosene.

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Answer 2

Saturated compounds have a single bond between Carbon atoms while Unsaturated compounds may have 2 or 3 bonds between carbon atoms.
Unsaturated compounds when reacts with KMnO4 then the pink colour is lost while the colour is not lost when saturated compounds react with KMnO4

Sodium is kept in kerosene because it is highly reactive metal a d can react with air to form oxides.Hence it is kept in kerosene.

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