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प्रश्न
Why students can read blackboard written by chalks?
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उत्तर
When we write on a 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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संबंधित प्रश्न
Define adsorption.
Aqueous solution of raw sugar, when passed over beds of animal charcoal, becomes colourless. Explain.
Explain that adsorption is a surface phenomenon.
A graph is plotted between log (x/m) and log P according to the equation `x/"m" - "kP"^(1/"n")`
Which of the following statements about this graph is not correct?
Which one of the following is correct for the adsorption of a gas at a given temperature on a solid surface?
For adsorption of gas over solid surface following data is obtained at 300 K.
| Pressure of gas (mm of Hg) |
100 | 25 |
| Amount adsorged per kg of charcoal |
3 gm | 1.5 gm |
The slope of the graph between log P vs log x/m will be ______.
[x/m and P are in same units as given in question.]
The process by which sites of adsorbent are made free so, that more adsorbent can occupy them is called ______.
