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प्रश्न
Physical adsorption of a gaseous species may change to chemical adsorption with ______.
पर्याय
decrease in temperature
increase in temperature
increase in surface area of adsorbent
decrease in surface area of adsorbent
उत्तर
Physical adsorption of a gaseous species may change to chemical adsorption with increase in temperature.
Explanation:
On increasing temperature physisorption changes to chemisorption. As the temperature increases, energy of activation of adsorbate particles increases which leads to formation of chemical bond between adsorbate and adsorbent. Hence, physisorption transform into chemisorption.
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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
Write any two characteristics of Chemisorption.
Answer in one sentence:
Name type of adsorption in which vander Waals focres are present.
Chromatography is based on the principle of ____________.
The extent of adsorption increases with the ____________.
Which of the following is not a favourable condition for physical adsorption?
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.
Chromatography is based on:-
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.
Which of the following statements is incorrect regarding physisorptions?
