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Applications of Colloids

Smoke particl...

Question

Smoke particles are actually electrically charged colloidal particles of :

A

carbon in air

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B

water droplets in air

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C

sulphur in air

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D

titanium oxide in air

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Solution

The correct option is A carbon in air
Smoke particles are electrically charged colloidal particles of carbon in the air.

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Q. Smoke is colloidal system of ...... dispersed in .....
1. water ; air
2. air ; carbon
3. carbon ; air
4. none of the above

Fill in the blanks with correct answer.

Q. Smoke contains ____________ charged ___________ particles in air.
1. positively ; silica
2. negatively ; silica
3. positively ; carbon
4. negatively ; carbon

Choose the correct option.

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