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प्रश्न
Explain why particles of a colloidal solution do not settle down when left undisturbed, while in the case of a suspension they do.
उत्तर
The size of colloidal particles in a colloidal solution is smaller than suspension. These particles are in a random motion hence do not settle down when left undisturbed. The particles of suspension are bigger and they tend to settle down under the effect of gravity.
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