OCE551 - AIR POLLUTION AND CONTROL ENGINEERING

UNIT-I
INTRODUCTION
PART-A

(2 MARKS)
1. Mention the classification of air pollutants. (May/June2016)
2. List two effects of air pollutants on materials. (May/June2016)
3. Name the method to measure concentration of SO2 and NO2. (May/June2012)
4. Brief the effect of carbon monoxide on human beings. (May/June2012,Nov/Dec2012)
5. Define Isokinetic conditions. (Nov/Dec2012)
6. Define primary and secondary air pollutants. Give examples. (Nov/Dec2011)
7. What is a representative sample? (Nov/Dec2011,Nov/Dec2013)
8. What do you mean by secondary pollutants state an example?
(May/June2013,May/June2012,Nov/Dec2013,Nov/Dec2012)
9. What is the purpose of measuring stack gas temperature and pressure in stack sampling?
(May/June2013)
10. What is Iso-kinetic sampling? (May/June2012)
11. Write a short notes on aerosol. (May/June2013)
12. Mention the objectives of air sampling. (Nov/Dec2012)
13. Name three important oxides of nitrogen responsible of air pollution. (May/June2013)
14. List out the ozone depleting compounds. (Nov/Dec2013)
15. Write the effects of air pollution on plants. (May/June2013)
16. Define mist. (May/June2013)
17. Differentiate pollution and pollutant. (Nov/Dec2015)
18. State the basic principles of sampling. (Nov/Dec2015, May/June2016)
19. What is global warming? (May/June2013)
20. What are greenhouse gases? Give examples. (Nov/Dec2012)
21. List out the analysis of air pollutants. (May/June2014)
22. Name some of the natural and manmade sources of air pollutants.
23. State the effects of air pollution on aquatic life.
24. What is acid rain?
25. What are the physical effects of air pollution?

PART-B (16MARKS)
1. List out the various air pollutants, their sources and its effect on both plant and
human being. (May/June2012, May/June2013, Nov/Dec2011,Nov/Dec2013)
2. Explain the detail procedure to find out the concentration of RSPM,SPM and
gaseous pollutant in ambient air using High Volume Sampler.
(May/June2012,Nov/Dec2013)
3. Write the effects of air pollution on human
beings.(May/June2016,May/June2013,Nov/Dec2013)
4. What is global warming? Discuss its occurrence pollutants responsible and
impacts. (May/June2013, May/June2012, Nov/Dec2013)
5. Write the causes, effects and control of ozone layer depletion.(May/June2016)
6. Explain the economical impacts of air pollution. Give example.(Nov/Dec2011, Nov/Dec2012)
 UNIT – II
METEOROLOGY
PART-A
(2MARKS)
1. Write the types of inversion. (May/June2016)

2. Mention the purpose of wind rose diagram. (May/June2016,Nov/Dec2015)

3. List out the meteorological factors in the content of air pollution. (May/June2012)

4. What is the prime mechanism to disperse air pollution? (May/June2012)

5. Define atmospheric stability? (Nov/Dec2012,May/June2012)

6. What are dispersion models? (Nov/Dec2012,May/June2012)

7. What is mixing height? (Nov/Dec2011,May/June2014)

8. Define plume rise. (Nov/Dec2011)

9. What is planetary boundary layer? (May/June2013)

10. What is turbulence and how it is formed? (May/June2013)

11. Express Gaussian dispersion model. (Nov/Dec2012)

12. State the types of dispersion model. (May/June2013)

13. What are the types of plume? (May/June2016)

14. How to winds play its role in air pollution? (May/June2012)

15. Define plume. (Nov/Dec2012)

16. What are the objectives of studying the meteorological factors?

17. Define negative lapse rate.

18. What is lapse rate?

19. What are the factors influencing plume behaviour?

20. Name the layers of the atmosphere from the lowest to highest.

21. Define radiation inversions.

22. Differentiate dry and wet adiabatic lapse rates.

23. What are the types of wind?

24. Define ELR.

25. Define pollution rose.

 PART-B (16MARKS)

1. What are the meteorological factors influencing the air pollution? Explain briefly.

(Nov/Dec2011,Nov/Dec2012,May/June2013)

2. With neat sketch, explain effect of lapse rate on plume behaviour.

(May/June2016,May/June2012)

3. Explain Gaussian dispersion model with assumption, merits and demerits.

(May/June2012,Nov/Dec2012,May/June2016)

4. What are dispersion models? State the types and explain them.

(May/June2013,Nov/Dec2015)

5. Explain the plume behaviour form a stack with respect to the different prevailing
lapse rate. Use neat sketches. (May/June2012, Nov/Dec2015)
6. Explain the factors affecting dispersion of air pollutants. (May/June2016)
 CONTROL OF PARTICULATE CONTAMINANTS

PART-A (2MARKS)

1. Write the equipments used to control particulate matter. (May/June2012, May/June2016)

2. Write the formula to calculate the efficiency in gravitation settling chamber. (May/June2016)
3. Define adsorption. (May/June2012)
4. What is the pollution control equipment? (Nov/Dec2012)
5. How does condensation bring up pollution control? (Nov/Dec2012)
6. Write the principle of ESP. (Nov/Dec2011)
7. Differentiate between adsorption and absorption. (Nov/Dec2011, Nov/Dec2015)
8. What is meant by pollution control by fugitive emission containment? (May/June2013)
9. State the particulate size which can be removed in a settling chamber and an ESP.
(May/June2013)

10. How combustion brings pollution control? (May/June2012)

11. What is wet scrubbing? (May/June2012)
12. List the principles of control of particulate matter. (Nov/Dec2015)
13. What is scrubbing? (Nov/Dec2012)
14. Define inertial separators. (May/June2013)
15. Merits and demerits of filtration process use bag house filter. (Nov/Dec2012)
16. What are the air pollution control strategies? (Nov/Dec2012)
17. State the types of inertial separator. (May/June2013)
18. Mention any two control equipment for removing fine particulate matter. (Nov/Dec2007)
19. What is cyclone separator? (Nov/Dec2012)
20. List the factors influencing the choice of air pollution control equipment. (May/June2013)
21. What are wet collection devices?
22. State the main objectives of controlling the air pollution.
23. Name some of adsorption units.
24. What are the merits and demerits of ESP?
25. Define scavenging.
 PART-B (16MARKS)

1. With neat sketch explain the working principle of electrostatic

precipitator. (May/June2016,May/June2012,Nov/Dec2012)
2. Explain how gaseous pollutants are controlled using principle of adsorption and absorption

(May/June 2016,May/June2013,Nov/Dec2012)

3. How does a bag house filter work? What are the positives and negatives of filtration process?

(Nov/Dec 2012,May/June2013)

4. Suggest an air pollution control plan for a cement industry and justify.

(Nov/Dec 2011,Nov/Dec2012)

5. Explain the process of selection of air pollution control equipment. (Nov/Dec2015)

6. Explain the principle of operation and working of a settling chamber. How its
efficiency can be improved? (May/June2013)
 UNIT – IV
CONTROL OF GASEOUS CONTAMINANTS
PART-A (2MARKS)

1. Define the term air quality index. (May/June2012, Nov/Dec2011)

2. Brief about air act. (May/June2012)
3. Define air pollution index (Nov/Dec2012)
4. What is zoning of a city? (Nov/Dec2012)
5. What is zoning in air pollution control measures? (Nov/Dec2011)
6. What are air quality Standards? (May/June2013)
7. State the purpose of air quality monitoring. (May/June2013)
8. What are the emission standards? (May/June2012)
9. Define EIA. (Nov/Dec2012,May/June2016)
10. List the air quality standards for residence zone. (Nov/Dec2015)
11. List the enforcement authority for preventing air pollution. (Nov/Dec2015)
12. Mention the advantages of Environmental Impact Assessment. (Nov/Dec2015)
13. Write the purpose of air quality index. (May/June2016)
14. What are the types of industrial zone? (May/June2016)
15. Define ambient air quality. (May/June2014)
16. State the objectives of ambient air quality standards. (May/June2012)
17. What is soiling index?
18. State the objectives of air zoning.
19. Define EIA report.
20. What is an environmental impact?
21. List out the factors considered in the ambient air quality monitoring.
22. What are the air pollution factors to be considered while locating a new industry?
23. State the types of EIA.
24. What are the different methods of zoning?
25. What are emission measurements?
 PART-B (16MARKS)

1. Describe the step by step procedure of Environmental Impact

Assessment. (Nov/Dec2015, May/June2013,Nov/Dec2012)
2. Explain how the air quality monitoring is carried out. (May/June2013,May/June2012)

3. What are the preventive measures for air pollution? How do ‘Town Planning’
bring air pollution control? Explain. (May/June2013, May/June2012,
May/June2016)

4. State and explain the goals of air quality standards. (May/June2012, Nov/Dec2012)

5. Discuss environmental legislation regarding air pollution control. (Nov/Dec2015,

May/June2012, May/June2016)

6. Explain the advantages of Environmental Impact Assessment. (Nov/Dec2015)

 UNIT-V

INDOOR AIR QUALITY MANAGEMENT

PART-A (2MARKS)

1. What is noise? (May/June2012)

2. Define sound pressure level? (May/June2012, Nov/Dec2012)

3. Define LN and Lequ. (Nov/Dec2012)

4. What is threshold shift? (Nov/Dec2012, May/June2012)

5. How is a noise characterized? (Nov/Dec2011)

6. What are the strategies of noise control? (Nov/Dec2011)

7. What are the various noise sources? (May/June2013, May/June2016)

8. State the noise standards. (May/June2013)

9. Define noise pollution. (Nov/Dec2015)

10. What is noise indicator? (May/June2016)

11. Write the effects of noise pollution. (May/June2016)

12. What are the preventive methods of noise pollution? (Nov/Dec2015)

13. Define wave number. (May/June2012)

14. What is noise rating system? (Nov/Dec2011)

15. Enumerate the causes for noise pollution. (May/June2016)

16. State ultrasound. (May/June2012)

17. Write a short note on noise criteria. (May/June2012)

18. How sounds are classified? (Nov/Dec2007)

19. List out the classification of noise pollution. (May/June2014)

20. What are the factors influencing the method of selection of noise control in
transmission path?(Nov/Dec2011)
21. Define noise assessment.

22. What are the objectives of noise measurement?

23. What is meant by SAC?

24. Define NRC.

25. What are the factors influencing the intensity of traffic noise?
 PART-B (16MARKS)

1. Explain the effects and assessmentof Noise Pollution and list the
standards. (Nov/Dec2015,May/June2016)

2. Make a detailed discussion on effects of Noise Pollution.(Nov/Dec2012,

May/June2013, May/June2016)

3. Explain the different noise control methods.

(Nov//Dec2012,May/June2013,Nov/dec2015)

4. What is noise rating system? What is itsimportance? (May/June2012,

Nov/Dec2012, Nov/Dec2011)

5. Describe the sources of Noise Pollution. (May/June2012,Nov/Dec2015)

6. Explain the methods to control noise pollution in industrial area. (May/June2016)