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Classification of adsorp..



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Q1. Which force holds the molecules in physical adsorption?

(a) Friction force
(b) Van der waals force
(c) Tension force
(d) Nuclear force

Q2. Chemical adsorption takes place at high temperature.

(a) True
(b) False
(c) Both acidolysis and aldehyde
(d) None of the mentioned

Q3. Adsorption is an endothermic process.

(a) True
(b) False
(c) Both acidolysis and aldehyde
(d) None of the mentioned

Q4. Which of the following is not characteristic of chemisorption?

(a) It is irreversible
(b) It is specific
(c) It is multilayer phenomenon
(d) Heat of adsorption is about 400kj

Q5. Which of the following statements regarding the physical adsorption of a gas on surface of solid is not correct?

(a) On increasing temperature, adsorption increases continuously
(b) Enthalpy changes are negative
(c) Adsorption is specific
(d) It is reversible in nature

Q6. Calculate the adsorption of a dye on activated carbon at 25?C, where k = 0.025, n = 0.5 and C = 0.04.

(a) 0.05
(b) 0.03
(c) 0.04
(d) 0.06

Q7. Which of the following isotherm is applicable to physical adsorption?

(a) Langmuir
(b) BET
(c) Freundlich
(d) Kisluik

Q8. The desorption curve is higher than the adsorption curve.

(a) True
(b) False
(c) Both acidolysis and aldehyde
(d) None of the mentioned

Q9. What do you mean by the term ?Sorption??

(a) Attachment
(b) Detachment
(c) Diffusion
(d) Thermal Expansion

Q10. .Which of the following is not an adsorbent?

(a) Carbon
(b) Polymers and resins
(c) Clay
(d) Dry sponge


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236 Year Ago

0.2 Gm Of Fine Animal Charcoal Is Mixed With Half Litre Of Acetic

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Activated Charcoal Is Used To Remove Colouring Matter From Pure Substances. It Works By

Modified 364 Year Ago

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364 Year Ago

Activated Charcoal Is Used To Remove Colouring Matter From Pure Substances. It Works By

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The Decomposition Of Hydrogen Peroxide Can Be Slowed By The Addition Of Acetamide. The Latter Acts As A

Modified 364 Year Ago

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364 Year Ago

The Decomposition Of Hydrogen Peroxide Can Be Slowed By The Addition Of Acetamide. The Latter Acts As A

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306 views

In The Adsorption Of A Gas On Solid, Freundlich Isotherm Is Obeyed. The Slope Of The Plot Is Zero. Then The Extent Of Adsorption Is

Modified 236 Year Ago

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236 Year Ago

In The Adsorption Of A Gas On Solid, Freundlich Isotherm Is Obeyed. The Slope Of The Plot Is Zero. Then The Extent Of Adsorption Is

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303 views

In Freundlich Adsorption Isotherm, The Value Of 1/n Is

Modified 236 Year Ago

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236 Year Ago

In Freundlich Adsorption Isotherm, The Value Of 1/n Is

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Choose The Incorrect Statement In Respect Of Physisorption

Modified 236 Year Ago

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236 Year Ago

Choose The Incorrect Statement In Respect Of Physisorption

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Plot Of Log X/m Against Log P Is A Straight Line Inclined At An Angle Of 45° . When The Pressure Is 0.5 Atm And Freundlich Parameter, K Is 10, The Amount Of Solute Adsorbed Per Gram Of Adsorbent Will

Modified 236 Year Ago

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236 Year Ago

Plot Of Log X/m Against Log P Is A Straight Line Inclined At An Angle Of 45° . When The Pressure Is 0.5 Atm And Freundlich Parameter, K Is 10, The Amount Of Solute Adsorbed Per Gram Of Adsorbent Will

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