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प्रश्न
Give reasons for the following observations :
Powdered substances are more effective adsorbents.
उत्तर
Adsorption is a surface phenomenon. Therefore, the process of adsorption is directly proportional to the surface area available for adsorption to take place. Both physisorption and chemisorption increase with an increase in the surface area. Powdered substances have large surface areas. Hence, powdered substances are more effective adsorbents.
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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
Why is adsorption always exothermic?
What is the difference between physisorption and chemisorption?
What are the factors which influence the adsorption of a gas on a solid?
Write one similarity between Physisorption and Chemisorption
Which of the following is true about chemisorption?
Extent of physisorption of a gas increases with ______.
Give an example where physisorption changes to chemisorption with rise in temperature. Explain the reason for change.
Adsorption play no role in:-
Which of the following statements is incorrect regarding physisorptions?
