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Adsorption



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Q1. Which of the following statements is not true with respect to chemisorption?

(a) Depends on nature of adsorbate and adsorbent
(b) Has a large heat of adsorption
(c) Forms a unimolecular layer
(d) Occurs at low temperature

Q2. Which of the following is an example of sorption?

(a) Sponge in water
(b) Cotton dipped in ink
(c) Water on silica gel
(d) Oxygen on metal surface

Q3. Which of the following statements is true with respect to the types of adsorption?

(a) Chemisorption is stronger than physisorption
(b) Physisorption is stronger than chemisorption
(c) They are both equal
(d) They cannot be compared

Q4. Which of the following statements is incorrect with respect to physisorption?

(a) It is reversible
(b) It is spontaneous
(c) ?H < 0
(d) ?S > 0

Q5. Which of the following can result in a transition from physisorption to chemisorption?

(a) Decrease in temperature
(b) Increase in temperature
(c) Decrease in pressure
(d) Increase in surface area

Q6. Which of the following statements is true with respect to the extent of physisorption?

(a) Increases with increase in temperature
(b) Decreases with increase in surface area
(c) Decreases with increase in the strength of Van der Waals forces
(d) Decreases with increase in temperature

Q7. In physisorption, the adsorbent does not show specificity towards a particular gas.

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

Q8. Which of the following forces is involved in physical adsorption?

(a) Gravitational force
(b) Magnetic force
(c) Van der Waals force
(d) Electromagnetic force

Q9. What is the process called when the molecules of a substance are retained at the surface of a solid or a liquid?

(a) Absorption
(b) Adsorption
(c) Sorption
(d) Desorption

Q10. A finely divided substance is more effective as an adsorbent.

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


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In The Case Of Small Cuts, Bleeding Is Stopped By Applying Potash Alum. Here Alum Acts As

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

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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 256 Year Ago

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

Modified 19 Year Ago

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

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

Modified 256 Year Ago

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256 Year Ago

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

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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

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256 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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Choose The Incorrect Statement In Respect Of Physisorption

Modified 256 Year Ago

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Choose The Incorrect Statement In Respect Of Physisorption

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