Q1. Which of the following statements is true regarding the Freundlich adsorption isotherm? (2020)
Solution:
The Freundlich adsorption isotherm is applicable to heterogeneous surfaces and describes how adsorption varies with pressure or concentration, indicating that it is not limited to monolayer adsorption.
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Q2. What is the term for the energy required to separate an adsorbate from an adsorbent? (2023)
Solution:
Desorption energy is the energy required to separate an adsorbate from an adsorbent.
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Q3. What is the term for the maximum amount of solute that can be adsorbed on a surface? (2021)
Solution:
The maximum amount of solute that can be adsorbed on a surface is referred to as the adsorption capacity.
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Q4. Which of the following statements is true regarding the Freundlich adsorption isotherm? (2020) 2020
Solution:
The Freundlich adsorption isotherm describes heterogeneous adsorption on surfaces with varying affinities, making it suitable for real-world applications.
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Q5. Which factor does NOT affect the rate of adsorption? (2023)
Solution:
The color of the adsorbent does not affect the rate of adsorption, while temperature, surface area, and concentration do.
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Q6. Which of the following statements is true about adsorption isotherms? (2023)
Solution:
Adsorption isotherms illustrate how the amount of adsorbate on a solid surface varies with pressure at a constant temperature.
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Q7. What is the primary process involved in the formation of a colloidal solution? (2022)
Solution:
Colloidal solutions are formed by the dispersion of fine particles in a medium, which is the process of dispersion.
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Q8. What is the effect of increasing temperature on chemisorption? (2022)
Solution:
Chemisorption is an exothermic process, and increasing temperature generally decreases the extent of chemisorption.
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Q9. Which of the following is a characteristic of adsorption? (2023)
Solution:
Adsorption is a surface phenomenon, as it occurs at the interface between phases.
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Q10. What is the primary mechanism of adsorption in activated charcoal?
Solution:
Activated charcoal primarily adsorbs substances through physical adsorption due to its high surface area and porous structure.
