Which of the following is not a colloidal solution ?
A
Solid - Solid
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B
Liquid-Liquid
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C
Gas-Gas
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D
Solid-Liquid
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Solution
The correct option is C Gas-Gas Colloids are classified into many types based on many aspects.
On basis of physical state of dispersed phase and dispersion medium, colloids are classified into 8 types:
Mixture of a gas with another gas is not a colloidal system because it forms a homogeneous system. But the colloidal solution is a heterogeneous system. Hence, gas-gas is not a colloidal solution.