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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
Differentiate between adsorbtion and absorption.
What is the effect of temperature on chemisorption ?
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.
Physisorption is reversible while chemisorption is irreversible. Why ?
How does chemisorption vary with temperature?
Which of the following compounds is formed when tungsten adsorbs oxygen gas?
Chromatography is based on the principle of ____________.
Extent of physisorption of a gas increases with ______.
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
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:-
Chromatography is based on:-
Adsorption play no role in:-
Write three differences between physisorption and chemisorption.
Which of the following statements is incorrect regarding physisorptions?
