Question
Define adsorption. Why students can read blackboard written by chalks?
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Answer
- Adsorption is the phenomenon of accumulation of higher concentration of ‘one substance on the surface of another (in bulk) due to unbalanced/unsatisfied attractive forces on the surface.
- When we write on blackboard using chalk, the chalk particles get adsorbed on the surface of the blackboard.
Hence, students can read blackboard written by chalks.
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