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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.
What is the effect of temperature on chemisorption ?
Why is adsorption always exothermic?
Write any two characteristics of chemisorption.
Distinguish between the meaning of the terms adsorption and absorption. Give one example of.
Give reason why a finely divided substance is more effective as an adsorbent.
What are the factors which influence the adsorption of a gas on a solid?
Discuss the effect of temperature on the adsorption of gases on solids.
Give reasons for the following observations :
Powdered substances are more effective adsorbents.
Answer in one sentence:
Name type of adsorption in which the compound is formed.
Which of the following compounds is formed when tungsten adsorbs oxygen gas?
Which of the following is true about chemisorption?
Which among the following is true for chemisorption?
In physisorption, adsorption is generally ____________.
Which of the following is not a favourable condition for physical adsorption?
In physisorption adsorbent does not show specificity for any particular gas because ______.
In which of the following reactions heterogenous catalysis is involved?
(a) \[\ce{2SO2 (g) + O2 (g) ->[NO(g)] 2SO3 (g)}\]
(b) \[\ce{2SO2 (g) ->[Pt(s)] 2SO3 (g)}\]
(c) \[\ce{N2 (g) + 3H2 (g) ->[Fe(s)] 2NH3 (g)}\]
(d) \[\ce{CH3COOCH3 (l) + H2O (l) ->[HCI(l)] CH3COOH (aq) + CH3OH (aq)}\]
Why do physisorption and chemisorption behave differently with rise in temperature?
In physical adsorption, gas molecules are bound on the solid surface by
Adsorption play no role in:-
