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प्रश्न
Why are powdered substances more effective adsorbents than their crystalline forms?
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उत्तर
Powdered substances are more effective adsorbents than their crystalline forms because when a substance is powdered, its surface area increases and physisorption is directly proportional to the surface area of the adsorbent
संबंधित प्रश्न
Give reasons for the following observations:
Physisorption decreases with increase in temperature.
Differentiate between adsorbtion and absorption.
Why is adsorption always exothermic?
Distinguish between the meaning of the terms adsorption and absorption. Give one example of.
Discuss the effect of temperature on the adsorption of gases on solids.
Write one similarity between Physisorption and Chemisorption
Give reasons for the following observations :
Powdered substances are more effective adsorbents.
Which of the following is an example of physisorption?
Adsorption increases when ____________.
Which among the following is a property of physisorption?
Which among the following is true for chemisorption?
Chromatography is based on the principle of ____________.
Extent of physisorption of a gas increases with ______.
Why is it important to have clean surface in surface studies?
Why is chemisorption referred to as activated adsorption?
What is the role of activated charcoal in gas mask used in coal mines?
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?
In physical adsorption, gas molecules are bound on the solid surface by
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.
