Which one of the following is not a property of physical adsorption?

Lower the temperature, more the adsorption

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Greater the surface area, more the adsorption

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Higher the pressure, more the adsorption

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Unilayer adsorption occurs

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Solution

The correct option is D Unilayer adsorption occurs
The physical adsorption is temperature and pressure dependent. It increases with increase in pressure and decreases with increase in temperature. Also, when there is more surface area then physical adsorption will be more. Physical adsorption forms multiple layer of adsorption.
Thus, statement given in option $D$ is incorrect.

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Similar questions

Q. Select the correct statements.
(i) Physical adsorption is weak, multilayer, non-directional and non-specific.
(ii) Chemical adsorption is strong, unilayer, directional and strong.
(iii) Adsorption decreases with temperature.
(iv) Chemical adsorption is more stronger than physical adsorption.

Q. Adsorption of a gas follows the equation

\frac{x}{m} = k P^{1 / 2}

Then the effect of pressure & temperature on physical adsorption of gas on solid is:

The same amount of pressure is applied on two different objects with different surface area. In this scenario which of the following statements is correct.

A.both the surface experience the same Force .

b.the surface having more surface area experiences more force.

c.the surface having less surface area experiences more force

d.force is zero in both cases

Q. Which of the following is not a favourable condition for physical adsorption of gas over a solid surface?

Q. Assertion :In chemisorption, adsorption keeps on increasing with temperature. Reason: Heat keeps on providing more and more activation energy.

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