Multiple Choice Questions
Smoke is an example of - Gas dispersed in liquid
- Gas dispersed in solid
- Solid dispersed in gas
- Solid dispersed in solid
C.
Solid dispersed in gas
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The extrastability of lyophilic colloids is due to - Charge on their particles
- A layer of medium of dispersion on their particles
- The smaller size of their particles
- The larger size of their particles
200 Views
Fog is an example of colloidal system of - liquid dispersed in gas
- gas dispersed in gas
- solid dispersed in gas
- solid dispersed in liquid
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Which of the following will have the highest coagulating power for As2S3 colloid?
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When excess of electrolyte is added to a colloid, it - coagulates
- stabilises
- gets diluted
- does not change
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Which one of the following is a hydrophobic sol? - Starch solution
- Gum solution
- Protein solution
- Arsenic sulphide solution
171 Views
Lyophilic sols are more stable than lyophobic sols because - The colloidal particles have positive charge
- The colloidal particles have negative charge
- The colloidal particles are solvated
- There are strong electrostatic repulsions between the negatively charged colloidal particles.
805 Views
Milk is a - Fat dispersed in milk
- Fat dispersed in water
- Water dispersed in fat
- Water dispersed in oil
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Tyndall effect in colloidal solution is due to - Scattering of light
- Reflection of light
- Absorption of light
- Presence of electrically charged particles
144 Views
Which one of the following is not a colloid? - Milk
- Blood
- Ice-cream
- Urea solution
154 Views
