This set of Separation Processes Multiple Choice Questions & Answers (MCQs) focuses on “Commercial adsorbents and Their Applications”.
1. What is activated carbon?
a) Microcrystalline graphite form of carbon
b) Nanocrystalline graphite form of carbon
c) Mircocrystalline non-graphite form of carbon
d) Nanocrystalline non-graphite form of carbon
View Answer
Explanation: Activated carbon is microcrystalline graphite form of carbon.
2. Activated carbon has ________ character.
a) Acidic
b) Basic
c) Hydrophillic
d) Hydrophobic
View Answer
Explanation: Activated carbon has a considerable hydrophilic character.
3. What is the commercial use of activated carbon?
a) Removal of organic pollutants from aqueous effluents
b) Production of N2 from air
c) Drying of air and other gases
d) Separation os molecules based on size and shape
View Answer
Explanation: Activated carbon is used for r Removal of organic pollutants from aqueous effluents.
4. What is the commercial use of carbon molecular sieve?
a) Removal of organic pollutants from aqueous effluents
b) Production of N2 from air
c) Drying of air and other gases
d) Separation of molecules based on size and shape
View Answer
Explanation: Carbon molecular sieve is used for drying of air and other gases.
5. What is the commercial use of zeolite molecular sieves?
a) Removal of organic pollutants from aqueous effluents
b) Production of N2 from air
c) Drying of air and other gases
d) Separation of molecules based on size and shape
View Answer
Explanation: Zeolite molecular sieves are used for separation of molecules based on size and shape.
6. What is the commercial use of silica gel?
a) Removal of organic pollutants from aqueous effluents
b) Production of N2 from air
c) Drying of air and other gases
d) Separation of molecules based on size and shape
View Answer
Explanation: Silica gel are used for Drying of air and other gases.
7. What is the commercial use of silicallite?
a) Removal of organic pollutants from aqueous effluents
b) Production of N2 from air
c) Removal of organics from gas streams
d) Drying of gas streams
View Answer
Explanation: Silicallite is commercially used for removal of organics from gas streams.
8. What is the strength of activated carbon?
a) Cheapest hydrophobic adsorbent
b) Only practical adsorbent for adsorption of O2 and N2
c) Can be regenerated by burning more easily
d) Less prone to fouling
View Answer
Explanation: Activated carbon is cheapest hydrophobic adsorbent.
9. What is the strength of carbon molecular sieves?
a) Cheapest hydrophobic adsorbent
b) Only practical adsorbent for adsorption of O2 and N2
c) Can be regenerated by burning more easily
d) Less prone to fouling
View Answer
Explanation: Carbon molecular sieve is only practical adsorbent of N2 and O2.
10. What is the strength of polymer adsorbent?
a) Cheapest hydrophobic adsorbent
b) Only practical adsorbent for adsorption of O2 and N2
c) Can be regenerated by burning more easily
d) Less prone to fouling
View Answer
Explanation: Polymer adsorbents are less prone to fouling.
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