Pune University BE Civil Air Pollution and Control Question Papers

B.E. (Civil)  AIR POLLUTION AND CONTROL (2008 Pattern) (Sem. – I) (Elective – I)

Time :3 Hours]                                                                           [Max. Marks :100

Instructions to the candidates:-

1)            Answer any 3 questions from each section.

2)            Answers to the two sections should be written in separate answer books.

3)             Neat diagrams must be drawn wherever necessary.

4)             Pigures to the right indicate full marks.

5)             Your answers will be valued as a whole.

6)             Use of logarithmic tables slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed.

7)            Assume suitable data, if necessary.


QI) a) State the relation between adiabatic lapse rate of rising phone of stack gas 8 ambient lapse rate.                                                                                                                       [7]

b)            Determine the effective height of a stack with following data: [II]

i)             Physical stack is 203 mts. tall with 107 cm inside diameter.

ii)           Wind velocity is 3.56 mls.

iii)        Air Temperature 150C.

iv)         Barometric pressure is 1000 millibars.

v)            Stack gas temperature is 1490C.


Q2) a) Explain in brief                                                                                                          [6]

i)              Meterological aspects.

ii)           Day adiabatic lapse rate.

b)            Sketch the following plume phenomena 8 discuss each in relation to dryadiabatic lapse rate.

i)              Trapping

ii)           conning

iii)        Fumigating.                                                                                                [6]


c)            A factory uses 2,00,000 lit. of furnace oil [sp. Density = 0.97] per month. If for one million litres of oil used per year the particulate matter emitted is 3.0 tonnes per year, S02 emitted is 59.7 tonnes per year, No^ emitted is 7.5 tonnes per year, Hydrocarbon emitted are 0.37 tonnes per year, calculate the height of chimney required to be provided for safe dispersion of the pollutants.                                                                                                [T]

Q3) a) What are the objective of sampling of atmosphere 8 explain about selecting sampling station.                                                                                                                  [5]

b)            Write about Instrument for sampling gas vapours.                            [5]

c)            Explain Iso-kinetic condition 8 ambient air quality monitoring. [T]


Q4) a) Explain about Air pollution survey.                                                                       [4]

b)            Enlist the sampling methods for Air Pollution 8 state about location of sampling sites.                                                                                                                     [T]

c)            Explain the principle of Beta attenuation monitor.                            [T]

Q5) a) Explain about the sources of odours.                                                                     [5]

b)            List the various odorous industrial operations 8 mention the odorous materials produced during these operations.                                                                          [5]

c)            Explain the methods used to measured the odour.                             [T]


Q6) a) Explain in brief about.                                                                                              [8]

i)             0dour masking.

ii)           0dour counteraction.

b) Explain in brief about sources 8 effects of Indoor Air Pollutants. [8]


Q7) a) What are two broad approaches to control of air pollution emission?[T]

b)            An air stream with a flow rate 7m/s is passed through a cyclone of standard proportions. The diameter of the cyclone is 2m 8 the air temperature is 770C.

i)             Determine the removal efficiency for a particle with a density of 1.5 g/cm3 and a dia of 10 |i m.

ii)           Determine the collection efficiency based on the above if a bank of 64 cyclones with diameter of 24 cm are used instead of the single large unit.           [12]



Discuss the advantages 8 disadvantages of wet collectors.                        [6]

Explain in detail cyclone collector.                                                                 [6]

Name and describe three control devices developed for control of automotive emission.            [6]

Compare the functions of central pollution control board with the functions of the state pollution control board in the area of air pollution control.                                         [8]

Discuss about main principal of land use planning as a method of control of air pollution.         [4]

Write note on “Environment (protection) Act, 1986.                                  [4]


Write short note on:                                                                                           [8]

i)             Air Act, 1981

ii)           Environment (protection) Act, 1986.

What is your own opinion about economics of air pollution control on the basis of cost-benefit ratio and optimization.                                                                                                [8]

Differentiate the role of regulatory agencies and control boards in obtaining environmental clearance for project.                                                                                         [8]

Discuss about – environmental impact of thermal power plant in India. [8]


What are the methodology for preparing environmental Impact assessment.         [8]

Discuss about environmental impact of water resources projects in India.


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