GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER-VII (NEW) EXAMINATION - WINTER 2020
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Subject Code:2171302 Date:19/01/2021
Subject Name:Air Pollution Control and Management
Time:10:30 AM TO 12:30 PM Total Marks: 56
Instructions:
- Attempt any FOUR questions out of EIGHT questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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Q.1
- Differentiate between Ambient air Quality standard and Emission Standard. (03 Marks)
- Enlist the particulate control mechanism and explain any one. (04 Marks)
- Explain the construction and working of Electrostatic precipitator with neat and clean diagram. (07 Marks)
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Q.2
- Explain Gravity Settler as a particulate control equipment. (03 Marks)
- Explain “why tall stack dispersion method for SOx control is not used?” (04 Marks)
- Write a short note on turbojet engine. (07 Marks)
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Q.3
- Explain desulphurization of fuel as a pre-combustion control method for SOx control. (03 Marks)
- Which particulate control equipment is best suited to control particulate matters emitted from coal based thermal power plant. Justify your answer. (04 Marks)
- Explain thermodynamics of sulfure oxide formation. (07 Marks)
Q.4
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- Write a brief note on “Carbon adsorption method” for SOx control. (03 Marks)
- Explain various mechanism of formation of Nitrogen oxides. (04 Marks)
- Enlist the pre combustion control mechanism for NOx control and explain any one in detail. (07 Marks)
Q.5
- How engine design changes to reduce automobile pollution. (03 Marks)
- Write a brief note on *“ Hydro carbon Reactivity” (04 Marks)
- Write a short note on “ VOC Control mechanism” (07 Marks)
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Q.7
- Explain the effect of air fuel ratio on emission characteristics for (i) Lean mixture (ii) Stoichiometric mixture (iii) Rich Mixture. (04 Marks)
- Explain the role of oxides of nitrogen in photooxidation. (07 Marks)
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Q.8
- List down the various air pollution episodes and explain any one in detail. (03 Marks)
- List down the various air pollutants emitted from Aluminum industry. (04 Marks)
- Explain stratified charge engine. (07 Marks)
Q.9
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- Identify the various sources of air pollution from Mineral processing industry and also suggest the most suited control measures. (03 Marks)
- List down the various air pollutants emitted from cement industry. (04 Marks)
- Differentiate between selective and non selective catalytic reduction for NOx Control. (07 Marks)
Q.10
- Identify the various sources of air pollution from Fertilizer processing industry and also suggest the most suited control measures. (03 Marks)
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