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Electrical Properties of Colloids

Smoke contain...

Question

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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Solution

Smoke is a colloidal solution. It contains negatively charged carbon particles in the air. These carbon particles condense water vapour on them and a smog is created. Smog causes air pollution.

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