EASY
9th CBSE
IMPORTANT
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The elements present in a compound can be separated by physical processes.

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Important Questions on Is Matter Around Us Pure?

HARD
9th CBSE
IMPORTANT
The intermolecular attractive forces in alcohol are stronger than those in water.
EASY
9th CBSE
IMPORTANT
A separating funnel is used to separate a mixture of water and mercury.
HARD
9th CBSE
IMPORTANT
Chromatography is used to obtain the components of an impure solution of copper(II) sulphate in water.
MEDIUM
9th CBSE
IMPORTANT
The colloidal solutions are homogeneous materials.
HARD
9th CBSE
IMPORTANT
Petrol and kerosene are miscible liquids.
MEDIUM
9th CBSE
IMPORTANT
A mixture of sand and iodine can be separated by sublimation.
EASY
9th CBSE
IMPORTANT
Ripening of fruits is a physical change.