Question

State whether it is a true solution,colloidal or a suspension (a) milk powder is dissolved in warm water. (n) copper sulphate in water. (c) fine mud dissolved in water. (d) chalk dust in water.

Answer 1

True solutions :-

• Homogeneous mixture of two or more substances.

• The solute is completely dissolved in the solvent.

Colloids :-

• Heterogeneous mixtures of two or more substances.

• The particles are not completely dissolved, and make the solution appear opaque.
• Shows Tyndall effect.

Suspensions :-

• Heterogeneous mixture
• Particles of solute settle down after sometime and can be seen with a eyw.

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A/Q

(a) Milk powder dissolved in warm water - Colloid

(b) Copper sulphate in water - True solution

(c) Fine mud dissolved in water - Suspension

(d) Chalk dust in water - Suspension

Answer 2

According to question

Milk powder dissolved in warm water is considered as colloidal solution

Copper sulphate in water is considered as solution

And fine mud disolved in water and chalk dust in water are considered as suspension

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