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प्रश्न
Answer in one sentence:
Name type of adsorption in which vander Waals focres are present.
उत्तर
Physical adsorption or physisorption.
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संबंधित प्रश्न
Write the differences between physisorption and chemisorption with respect to the following:
(i) Specificity
(ii) Temperature dependence
(iii) Reversibility and
(iv) Enthalpy change
Give reasons for the following observations:
Physisorption decreases with increase in temperature.
What is the effect of temperature on chemisorption ?
Why are powdered substances more effective adsorbents than their crystalline forms?
Distinguish between the meaning of the terms adsorption and absorption. Give one example of.
What are the factors which influence the adsorption of a gas on a solid?
Discuss the effect of pressure and temperature on the adsorption of gases on solids.
Which of the following compounds is formed when tungsten adsorbs oxygen gas?
Powdered substances are more effective adsorbents than their crystalline forms because ____________.
Which among the following is true for chemisorption?
Chromatography is based on the principle of ____________.
Which of the following is not a favourable condition for physical adsorption?
Why is it important to have clean surface in surface studies?
Why is chemisorption referred to as activated adsorption?
What is the role of diffusion in heterogenous catalysis?
Assertion: Detergents with low CMC are more economical to use.
Reason: Cleansing action of detergents involves the formation of micelles. These are formed when the concentration of detergents becomes equal to CMC.
What is the role of adsorption in heterogenous catalysis?
A plot of 10 g (x/m) versus 10 g p for the adsorption of a gas on the surface of a solid gives a straight line with slope equal to:-
Rate of physisorption increase with:-
Chromatography is based on:-
Adsorption play no role in:-
Write three differences between Physisorption and Chemisorption.
Assertion A : Activated charcoal adsorbs SO2 more efficiently than CH4.
Reason R : Gases with lower critical temperatures are readily adsorbed by activated charcoal.
In light of the above statements, choose the correct answer from the options given below.
