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Civil Engineering (CE) Exam  >  Civil Engineering (CE) Test  >  Environmental Engineering  >  Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - Civil Engineering (CE) MCQ

Dispersion Of Air Pollutants, Control Gaseous Pollutants - Free MCQ Practice


MCQ Practice Test & Solutions: Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants (10 Questions)

You can prepare effectively for Civil Engineering (CE) Environmental Engineering with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants". These 10 questions have been designed by the experts with the latest curriculum of Civil Engineering (CE) 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 25 minutes
  • - Number of Questions: 10

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Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - Question 1
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 When environmental Lapse Rate (ELR) is less is than Adiabatic Lapse Rate (ALR), then which of the following occurs?

Detailed Solution: Question 1

Explanation: When the temperature increases with increase in altitude, Sub adiabatic lapse rate occur and there will be stable environment.

Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - Question 2
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_______ occurs when atmospheric temperature increases with height.

Detailed Solution: Question 2

Explanation: When the temperature increases with an increase in altitude, Sub adiabatic lapse rate occur and there will be stable environment. ... Explanation: Under negative lapse rate, the colder air is below the warmer air. It can be occurred near the earth's surface.

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Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - Question 3
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When environmental Lapse Rate (ELR) is equal to the Adiabatic Lapse Rate (ALR), then which of the following occurs?

Detailed Solution: Question 3

Explanation: When the temperature is constant with height, then neutral lapse rate occurs.

Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - Question 4
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State whether the following statement is true or false.
The wet adiabatic rate is greater than the dry adiabatic rate. 

Detailed Solution: Question 4

Explanation: The value of wet adiabatic rate is 60C per 1000m whereas of dry adiabatic rate is 9.80C per 1000m.

Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - Question 5
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When Environmental Lapse Rate (ELR) is greater than Adiabatic Lapse Rate (ALR), then which of the following occurs?

Detailed Solution: Question 5

Explanation: In Super adiabatic lapse rate, the environment is unstable due to quick dispersion of pollutants.

Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - Question 6
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Which of the following is the absorption unit?

Detailed Solution: Question 6

Explanation: Cyclone collector, Gravitation settling chamber and Dynamic precipitator are used to remove particulate matter, whereas Plate tower is used to remove gaseous matter and is an absorption unit.

Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - Question 7
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Which of the following catalyst is used for removing hydrocarbon from gaseous pollutant in combustion unit?

Detailed Solution: Question 7

Explanation: Activated alumina is used as a catalyst for removing gaseous pollutant called hydrocarbons from the air. The concentration of hydrocarbon emitted from automobiles is 300-1000 mg/l.

Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - Question 8
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 Which of the following is not a part of adsorption unit?

Detailed Solution: Question 8

Explanation: Packed tower is a part of the absorption unit, whereas multiple fixed bed, fluidized bed and moving bed are the examples of absorbers.

Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - Question 9
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 Which of the following is a bulk phenomena?

Detailed Solution: Question 9

Absorption is a bulk phenomenon because it involves the uptake of a substance into the interior (bulk) of another material, rather than just on its surface.

  • Physical adsorption and chemical adsorption occur on the surface of the material.
  • Sorption is a general term that encompasses both adsorption and absorption.

Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - Question 10
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Which of the following is not an adsorbent?

Detailed Solution: Question 10

Explanation: Water is an absorbent whereas molecular sieves, activated carbon and activated alumina are adsorbents.

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About this Civil Engineering (CE) Practice Test

This test contains 10 MCQs on Dispersion Of Air Pollutants, Control Of Gaseous Pollutants with detailed solutions for each question. It is part of the Environmental Engineering course on EduRev, designed to align with the current Civil Engineering (CE) syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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If you found this Dispersion Of Air Pollutants, Control Of Gaseous Pollutants MCQ Test helpful, you can further enhance your Civil Engineering (CE) preparation with in-depth courses on EduRev, for all the subjects and topics available in Environmental Engineering course. The course offers:
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