Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 6th Sem New 2161302 Fundamentals Of Air Pollution Previous Question Paper
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? VI (New) EXAMINATION ? WINTER 2019
Subject Code: 2161302 Date: 04/12/2019
Subject Name: Fundamentals of Air Pollution
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full markss.
MARKS
Q.1 (a) Classify air pollutants into different categories and indicate their sources. 03
(b) What are the important factors which contribute to air pollution? 04
(c) Explain the effects of NOx on Environment. 07
Q.2 (a) Define :
1. Traverse points 2. Isokinetic condition 3. Representative sample.
03
(b) Differentiate between stack standards and ambient standards. 04
(c) Explain the guidelines for sampling and analysis of SO2 in ambient air with
the help of flow chart.
07
OR
(c) Explain the procedure of the particulate matter sampling from stack with
diagram.
07
Q.3 (a) Differentiate between fumigation and lofting. 03
(b) Write a short note on MMD. 04
(c) Derive the equation of DALR ( - dT /dz ) = 9.8 ? C. 07
OR
Q.3 (a) Differentiate between Super adiabatic and sub adiabatic condition. 03
(b) Write a short note on Wind velocity profile. 04
(c) Enlist the factors affecting the dispersion of pollutants in the atmosphere?
Note down the advantages and disadvantages of Gaussian Model.
07
Q.4 (a) Define following terms:
1. Convective Turbulence 2. Downwind 3. Dispersion
03
(b) Briefly explain applications of windrose diagram. 04
(c) Find out the flow of flue gas and particulate matter concentration in
mg/Nm
3
. Type of fuel is lignite (Mata no madh), fuel consumption is 5
T/day. Assume suitable data.
07
OR
Q.4 (a) Define following terms:
1. Mechanical Turbulence 2. Sea breeze 3. Trapping
03
(b) Differentiate between Subsidence and Radiation inversion. 04
(c) The result of stack monitoring report for the thermal power plant are as
shown below:
Stack No. SO2 Concentration NO2 Concentration
1 200 2
2 400 1.5
3 600 1.2
4 700 3.5
Stack limit 100 ppm 50 ppm
07
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ? VI (New) EXAMINATION ? WINTER 2019
Subject Code: 2161302 Date: 04/12/2019
Subject Name: Fundamentals of Air Pollution
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full markss.
MARKS
Q.1 (a) Classify air pollutants into different categories and indicate their sources. 03
(b) What are the important factors which contribute to air pollution? 04
(c) Explain the effects of NOx on Environment. 07
Q.2 (a) Define :
1. Traverse points 2. Isokinetic condition 3. Representative sample.
03
(b) Differentiate between stack standards and ambient standards. 04
(c) Explain the guidelines for sampling and analysis of SO2 in ambient air with
the help of flow chart.
07
OR
(c) Explain the procedure of the particulate matter sampling from stack with
diagram.
07
Q.3 (a) Differentiate between fumigation and lofting. 03
(b) Write a short note on MMD. 04
(c) Derive the equation of DALR ( - dT /dz ) = 9.8 ? C. 07
OR
Q.3 (a) Differentiate between Super adiabatic and sub adiabatic condition. 03
(b) Write a short note on Wind velocity profile. 04
(c) Enlist the factors affecting the dispersion of pollutants in the atmosphere?
Note down the advantages and disadvantages of Gaussian Model.
07
Q.4 (a) Define following terms:
1. Convective Turbulence 2. Downwind 3. Dispersion
03
(b) Briefly explain applications of windrose diagram. 04
(c) Find out the flow of flue gas and particulate matter concentration in
mg/Nm
3
. Type of fuel is lignite (Mata no madh), fuel consumption is 5
T/day. Assume suitable data.
07
OR
Q.4 (a) Define following terms:
1. Mechanical Turbulence 2. Sea breeze 3. Trapping
03
(b) Differentiate between Subsidence and Radiation inversion. 04
(c) The result of stack monitoring report for the thermal power plant are as
shown below:
Stack No. SO2 Concentration NO2 Concentration
1 200 2
2 400 1.5
3 600 1.2
4 700 3.5
Stack limit 100 ppm 50 ppm
07
2
Determine whether an emission exceeds the limits specified by pollution
control authority. If yes by how much percent?
Q.5 (a) Express 30?g/m
3
and 1.5 ?g/m
3
of SO2 in ppm. 03
(b) How to reduce the odor from the point sources? Explain any one method in
detail.
04
(c) Write a short note on characteristics of sound. 07
OR
Q.5 (a) A diesel vehicle emits 4% carbon monoxide by volume. Determine its
concentration in g/m
3
at 25
0
C and 1 atmosphere pressure.
03
(b) What is decibel? Explain in detail. Why it is used? 04
(c) Define odour and explain sources of odour. 07
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This post was last modified on 20 February 2020