Jawaharlal Nehru Technological University Hyderabad

Jawaharlal Nehru Technological University Hyderabad B.Tech III AIR POLLUTION AND CONTROL Previous Question Paper (February - 2023 - R16)

B.Tech | III | II | R16 | February - 2023

Answer PaperPaper Code: 136ABMaximum Marks: 75Time: 3 hours

Question paper consists of Part A, Part B. Part A is compulsory (25 marks). In Part B, Answer any one question from each unit (10 marks each).

Part A

125 marks
a
Differentiate between primary and secondary pollutants.
2 marks

Answer

Primary pollutants are emitted directly into the atmosphere from identifiable sources, such as sulfur dioxide or carbon monoxide from industrial stacks. Secondary pollutants are formed in the atmosphere through chemical or photochemical reactions between primary pollutants and other atmospheric constituents, such as ozone or peroxyacetyl nitrate (PAN).

b
What are line and area sources?
3 marks

Answer

Line sources refer to emissions released along a path, such as motor vehicle exhaust on highways or railways. Area sources represent emissions from a diffuse geographic region where individual sources are too small or numerous to track separately, such as residential heating, agricultural burning, or urban construction sites.

c
Why acid rains occur?
2 marks

Answer

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d
What are the effects of air pollution on marble and metal?
3 marks

Answer

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e
What is the importance of air-fuel ratio in automobile pollution?
2 marks

Answer

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f
What is the influence of rainfall and humidity of air pollution?
3 marks

Answer

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g
Sketch adiabatic, sub and super adiabatic lapse rates.
2 marks

Answer

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h
Sketch a centrifugal separator and list its advantages.
3 marks

Answer

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i
Explain the advantages of green belt in controlling air pollution.
2 marks

Answer

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j
Sketch a tray tower used for control of gaseous emissions.
3 marks

Answer

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Part B

210 marks
a
Define air pollution and explain the significance of air pollution in urban areas.
5 marks

Answer

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b
Explain the salient aspects of Bhopal gas tragedy.
5 marks

Answer

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OR
3
Write notes on:
10 marks
a
Photochemical smog and its effects
2.5 marks

Answer

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b
Natural and artificial sources of air pollution
2.5 marks

Answer

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c
Indoor air pollution
2.5 marks

Answer

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d
Particulate pollutants.
2.5 marks

Answer

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4
With help of sketch, explain greenhouse phenomena. Describe the consequences of air pollution.
10 marks

Answer

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OR
5
Write notes on:
10 marks
a
Effects of SPM on human beings
5 marks

Answer

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b
Effects of acid rain.
5 marks

Answer

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610 marks
a
Discuss the effects of heat and pressure on air pollution.
5 marks

Answer

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b
With help of a sketch, explain the functioning of scrubbers for removal of gases.
5 marks

Answer

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OR
710 marks
a
Discuss the importance of meteorological parameters in air pollution.
5 marks

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b
What is wind rose? Explain the purpose of wind rose in air pollution?
5 marks

Answer

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8
With help of sketches, explain possible plume types depending on atmospheric lapse rates.
10 marks

Answer

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OR
9
With help of sketches explain the working principles of:
10 marks
a
Fabric filters
5 marks

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b
Electrostatic precipitators. Also list their merits and applications.
5 marks

Answer

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10
Explain the air pollution mitigation measures that are suggested in an EMP for controlling emissions in thermal power plant.
10 marks

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OR
1110 marks
a
With help of sketch, explain the working principles of devices used for particulate samplers.
5 marks

Answer

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b
Discuss strategies adopted for controlling air pollution in urban areas.
5 marks

Answer

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This page contains the solved question paper with answers of AIR POLLUTION AND CONTROL from Jawaharlal Nehru Technological University Hyderabad for B.Tech CE III II, February - 2023, R16.

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