Solution Manual
Adsorption Theoretical Aspects and Environmental Applications, 1E Ronaldo
Ferreira do Nascimento
Adsorption MCQs
1. What is adsorption?
A. Absorption into bulk
B. Accumulation on surface
C. Chemical reaction only
D. Filtration
Answer: B – Adsorption occurs at the surface.
2. Adsorbent refers to:
A. Substance being adsorbed
B. Surface material
C. Solvent
D. Catalyst only
Answer: B – The adsorbent is the solid surface.
3. Adsorbate is:
A. Solid material
B. Liquid carrier
C. Substance adsorbed
D. Gas container
Answer: C – The molecule attached to surface.
4. Physical adsorption involves:
A. Covalent bonds
B. Weak forces (Van der Waals)
C. Ionic bonding
D. Nuclear forces
Answer: B
5. Chemisorption involves:
,A. Weak forces
B. Strong chemical bonds
C. No interaction
D. Gravity
Answer: B
6. Adsorption increases with:
A. Decreasing surface area
B. Increasing surface area
C. Increasing particle size
D. Removing pores
Answer: B
7. Which material is a common adsorbent?
A. Sand
B. Activated carbon
C. Plastic
D. Rubber
Answer: B
8. Adsorption is generally:
A. Endothermic
B. Exothermic
C. Neutral
D. Nuclear
Answer: B
9. Langmuir isotherm assumes:
A. Multilayer adsorption
B. Monolayer adsorption
C. No adsorption
D. Infinite layers
Answer: B
10. Freundlich isotherm is:
A. Linear always
B. Empirical model
C. Gas law
,D. Kinetic law
Answer: B
11. Increase in temperature usually:
A. Increases adsorption
B. Decreases adsorption
C. No effect
D. Stops adsorption
Answer: B – For physical adsorption.
12. Adsorption depends on:
A. Surface area
B. Temperature
C. Pressure
D. All of the above
Answer: D
13. BET theory explains:
A. Monolayer only
B. Multilayer adsorption
C. No adsorption
D. Chemical bonding
Answer: B
14. Pores in adsorbents:
A. Reduce adsorption
B. Increase adsorption
C. No effect
D. Destroy structure
Answer: B
15. Which is NOT an adsorbent?
A. Zeolite
B. Silica gel
C. Activated carbon
D. Distilled water
Answer: D
16. Adsorption at equilibrium means:
, A. No adsorption
B. Constant rate forward & reverse
C. Infinite adsorption
D. Zero pressure
Answer: B
17. Surface energy:
A. Decreases adsorption
B. Drives adsorption
C. Has no role
D. Destroys molecules
Answer: B
18. Higher pressure:
A. Increases adsorption (gas)
B. Decreases adsorption
C. No effect
D. Stops process
Answer: A
19. Desorption is:
A. Surface binding
B. Release of adsorbate
C. Filtration
D. Reaction
Answer: B
20. Adsorption kinetics studies:
A. Structure
B. Rate of adsorption
C. Color
D. Density
Answer: B
21. Which force dominates physisorption?
A. Covalent
B. Ionic
C. Van der Waals
Adsorption Theoretical Aspects and Environmental Applications, 1E Ronaldo
Ferreira do Nascimento
Adsorption MCQs
1. What is adsorption?
A. Absorption into bulk
B. Accumulation on surface
C. Chemical reaction only
D. Filtration
Answer: B – Adsorption occurs at the surface.
2. Adsorbent refers to:
A. Substance being adsorbed
B. Surface material
C. Solvent
D. Catalyst only
Answer: B – The adsorbent is the solid surface.
3. Adsorbate is:
A. Solid material
B. Liquid carrier
C. Substance adsorbed
D. Gas container
Answer: C – The molecule attached to surface.
4. Physical adsorption involves:
A. Covalent bonds
B. Weak forces (Van der Waals)
C. Ionic bonding
D. Nuclear forces
Answer: B
5. Chemisorption involves:
,A. Weak forces
B. Strong chemical bonds
C. No interaction
D. Gravity
Answer: B
6. Adsorption increases with:
A. Decreasing surface area
B. Increasing surface area
C. Increasing particle size
D. Removing pores
Answer: B
7. Which material is a common adsorbent?
A. Sand
B. Activated carbon
C. Plastic
D. Rubber
Answer: B
8. Adsorption is generally:
A. Endothermic
B. Exothermic
C. Neutral
D. Nuclear
Answer: B
9. Langmuir isotherm assumes:
A. Multilayer adsorption
B. Monolayer adsorption
C. No adsorption
D. Infinite layers
Answer: B
10. Freundlich isotherm is:
A. Linear always
B. Empirical model
C. Gas law
,D. Kinetic law
Answer: B
11. Increase in temperature usually:
A. Increases adsorption
B. Decreases adsorption
C. No effect
D. Stops adsorption
Answer: B – For physical adsorption.
12. Adsorption depends on:
A. Surface area
B. Temperature
C. Pressure
D. All of the above
Answer: D
13. BET theory explains:
A. Monolayer only
B. Multilayer adsorption
C. No adsorption
D. Chemical bonding
Answer: B
14. Pores in adsorbents:
A. Reduce adsorption
B. Increase adsorption
C. No effect
D. Destroy structure
Answer: B
15. Which is NOT an adsorbent?
A. Zeolite
B. Silica gel
C. Activated carbon
D. Distilled water
Answer: D
16. Adsorption at equilibrium means:
, A. No adsorption
B. Constant rate forward & reverse
C. Infinite adsorption
D. Zero pressure
Answer: B
17. Surface energy:
A. Decreases adsorption
B. Drives adsorption
C. Has no role
D. Destroys molecules
Answer: B
18. Higher pressure:
A. Increases adsorption (gas)
B. Decreases adsorption
C. No effect
D. Stops process
Answer: A
19. Desorption is:
A. Surface binding
B. Release of adsorbate
C. Filtration
D. Reaction
Answer: B
20. Adsorption kinetics studies:
A. Structure
B. Rate of adsorption
C. Color
D. Density
Answer: B
21. Which force dominates physisorption?
A. Covalent
B. Ionic
C. Van der Waals
