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


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10 Questions MCQ Test Environmental Engineering - Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants

Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants for Civil Engineering (CE) 2024 is part of Environmental Engineering preparation. The Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants below.
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Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - Question 1

 When environmental Lapse Rate (ELR) is less is than Adiabatic Lapse Rate (ALR), then which of the following occurs?

Detailed Solution for Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - 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

_______ occurs when atmospheric temperature increases with height.

Detailed Solution for Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - 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

When environmental Lapse Rate (ELR) is equal to the Adiabatic Lapse Rate (ALR), then which of the following occurs?

Detailed Solution for Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - 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

State whether the following statement is true or false.
The wet adiabatic rate is greater than the dry adiabatic rate. 

Detailed Solution for Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - 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

When Environmental Lapse Rate (ELR) is greater than Adiabatic Lapse Rate (ALR), then which of the following occurs?

Detailed Solution for Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - 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

Which of the following is the absorption unit?

Detailed Solution for Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - 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

Which of the following catalyst is used for removing hydrocarbon from gaseous pollutant in combustion unit?

Detailed Solution for Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - 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

 Which of the following is not a part of adsorption unit?

Detailed Solution for Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - 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

 Which of the following is a bulk phenomena?

Detailed Solution for Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - Question 9

Explanation: Adsorption is a bulk phenomena, whereas absorption is a surface phenomena.

Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - Question 10

Which of the following is not an adsorbent?

Detailed Solution for Test: Dispersion Of Air Pollutants, Control Of Gaseous Pollutants - Question 10

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

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