NPTEL Air Pollution and Control Assignment 3 Answers 2022:- All the Answers provided here to help the students as a reference, You must submit your assignment at your own knowledge.
| NPTEL Air Pollution and Control | Answer |
| Assignment 1 | Click Here |
| Assignment 2 | Click Here |
| Assignment 3 | Click Here |
| Assignment 4 | Click Here |
| Assignment 5 | NA |
| Assignment 6 | NA |
| Assignment 7 | NA |
| Assignment 8 | NA |
| Assignment 9 | NA |
| Assignment 10 | NA |
| Assignment 11 | NA |
| Assignment 12 | NA |
Q1. According to the Pasquill-Gifford stability classification, the stability class ‘E’ is:
(A) Very stable
(B) Slightly stable
(C) Slightly unstable
(D) Neutral
Answer:- (B) Slightly stable
Q2. Identify the type of plume based on the figure given below (DALR- Dry Adiabatic Lapse Rate and ELR – Environmental Lapse Rate):
(A) Looping
(B) Coning
(C) Fumigation
(D) Lofting
Answer:- (A) Looping
Q3. The bottom 10 % of the atmospheric boundary layer is called as
(A) Surface layer
(B) Stable boundary layer
(C) Residual layer
(D) Mixed layer
Answer:- (A) Surface layer
Q4. As per CPCB recommendations, the minimum value for chimney/stack height adopted for industries except for thermal power plant is ___________.
(A) 30 m
(B) 20 m
(C) 15 m
(D) 10 m
Answer:- (A) 30 m
Q5. _________ is the number of times monitoring data is obtained and recorded over a specified time interval.
(A) Measurement Techniques
(B) Indicator(s) of performance
(C) Monitoring Frequency
(D) Averaging time
Answer:- (C) Monitoring Frequency
Q6. Cities in which the ambient air concentrations have consistently exceeded the National Ambient Air Quality Standards (NAAQS) for a period of 5 years are called as
(A) Attainment cities
(B) Non-attainment cities
(C) Megacities
(D) Green cities
Answer:- (B) Non-attainment cities
Q7. When an air pollution index gives a false alarm even though concentrations of all the pollutants are within the permissible limit except for one pollutant, it is called
(A) Eclipsing
(B) Ambiguity
(C) Maximum operator approach
(D) Minimum operator approach
Answer:- (B) Ambiguity
Q8. If AQI comes out to be 169, what would be the AQI category as per CPCB?
(A) Satisfactory
(B) Moderate
(C) Poor
(D) Severe
Answer:- (B) Moderate
Q9. Classification of air quality models based on the coordinate system is:
(A) Short-term and long-term models
(B) Reactive and non-reactive models
(C) Grid-based and trajectory models
(D) Screening and refined models
Answer:- For Answer Click Here
Q10. Air Quality Modelling in Urban Regions using an Optimal Resolution Approach (AURORA) model is based on
(A) Box model
(B) Eulerian model
(C) Gaussian model
(D) Lagrangian model
Answer:- (A) Box model
Disclaimer:- We do not claim 100% surety of solutions, these solutions are based on our sole expertise, and by using posting these answers we are simply looking to help students as a reference, so we urge do your assignment on your own.
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NPTEL Air Pollution and Control Assignment 3 Answers 2022:- All the Answers provided here to help the students as a reference, You must submit your assignment at your own knowledge.
NPTEL Air Pollution and Control Assignment 2 Answers 2022
Q1. Air pollutants which forms the haze, impacts visibility by _________ of light in the atmosphere.
(A) Scattering and absorption
(B) Only scattering
(C) Only absorption
(D) None of the above
Answer:- (A) Scattering and absorption
Q2. Which of the following soil type is more resistant to acid rain
(A) Quartzite
(B) Granite
(C) Gneiss
(D) Limestone
Answer:- (D) Limestone
Q3. Identify the criteria pollutant from the following options
(A) Carbon dioxide (CO2)
(B) Dioxin
(C) Carbon Monoxide (CO)
(D) Asbestos
Answer:- (C) Carbon Monoxide (CO)
Q4. The ozone layer which protects the earth from harmful ultraviolet rays is located in:
(A) Troposphere
(B) Stratosphere
(C) Mesosphere
(D) Exosphere
Answer:- (B) Stratosphere
Q5. Formation of ozone is an example of the phase transformation from:
(A) Liquid to gas
(B) Solid to gas
(C) Gas to gas
(D) Liquid to liquid
Answer:- (A) Liquid to gas
Q6. The _____________ is the major chemical scavenger in the troposphere and it controls the atmospheric lifetime of most gases in the troposphere.
(A) Ozone
(B) Hydroxyl radical (OH)
(C) Photochemical smog
(D) Volatile organic compounds
Answer:- (B) Hydroxyl radical (OH)
Q7. Earth rotates on its axis, circulating air is deflected towards the right in the Northern Hemisphere and towards the left in the Southern Hemisphere. This deflection is called
(A) Circulation
(B) Coriolis effect
(C) Convection
(D) None of the above
Answer:- (B) Coriolis effect
Q8. The process of the conversion of a liquid chemical into a vapor, which then escapes into the atmosphere is called
(A) Volatilization
(B) Adsorption
(C) Absorption
(D) Ionization
Answer:- For Answer Click Here
Q9. Consider the following figure and select the correct option:
The air parcel will:
(A) Rise
(B) Sink
(C) No change
(D) None of the above
Answer:- (A) Rise
Q10. Consider the following figure and select the correct option:
The types of atmospheric stability is:
(A) Absolute instability
(B) Absolutely stable
(C) Conditional stability
(D) Neutral
Answer:- (C) Conditional stability
NPTEL Air Pollution and Control Assignment 3 Answers 2022:- All the Answers provided here to help the students as a reference, You must submit your assignment at your own knowledge.
Q1. Match List-I with List-II and select the correct answer using the codes given below the lists:
List I List II
A. The Great London Smog 1. 1952
B. Bhopal Gas Tragedy 2. 2020
C. Meuse Valley Belgium 3. 1984
D. Vizag Gas Leak 4. 1930
(A) A-2, B-1, C-4, D-3
(B) A-2, B-1, C-3, D-4
(C) A-1, B-3, C-2, D-4
(D) A-1, B-3, C-4, D-2
Ans:- (D) A-1, B-3, C-4, D-2
Q2. The gas released during the Vizag gas leak incident was:
(A) Methane
(B) Methyl Isocynate
(C) Styrene
(D) Sulphur Dioxide
Ans:- (C) Styrene
Q3. The atmosphere is divided into different layers:
1. Mesosphere
2. Stratosphere
3. Thermosphere
4. Troposphere
The correct sequence of these layers starting from the surface of the earth is:
(A) 2, 4, 1, 3
(B) 4, 2, 1, 3
(C) 4, 2, 3, 1
(D) 2, 4, 3, 1
Ans:- (B) 4, 2, 1, 3
Q4. If the range of the scale of air pollution is approximately upto hundred meters, it is considered as:
(A) Micro scale
(B) Meso scale
(C) Macro scale
(D) None of the above
Ans:- (A) Micro scale
Q5. The air pollution pyramid shown here, illustrates the inverse relationship between (1) ______ and (2) _______.
(A) 1- Severity of impacts, 2 – Proportion of people affected
(B) 1- Proportion of people affected, 2 – Severity of impacts
(C) 1- Pollutant type, 2- Level of awareness
(D) 1- Level of awareness, 2- Pollutant type
Ans:- (A) 1- Severity of impacts, 2 – Proportion of people affected
Q6. The temporary or immediate effects which are often reversible, when exposure ends are called
(A) Short term effects
(B) Long term effects
(C) Chronic effects
(D) None of the above
Ans: (A) Short term effects
Q7. An observable alteration in the plant when exposed to air pollution is called
(A) Damage
(B) Injury
(C) Stomata
(D) None of the above
Ans:- (B) Injury
Q8. Chronic effects of fluoride in animals includes:
(A) Depression
(B) Bone deformity
(C) Lung failure
(D) Blindness
Ans:- (B) Bone deformity
Q9. Which of the following materials is least sensitive to air pollutants:
(A) Brick
(B) Sandstone
(C) Unalloyed steel
(D) Nickel-plated steel
Ans:- (A) Brick
Q10. In coastal region, the pollutant which play a significant role in accelerating the corrosion of metals:
(A) Potassium
(B) Chlorides
(C) Calcium
(D) None of the above
Ans:- For Answer CLICK HERE
NPTEL Air Pollution and Control Assignment 3 Answers 2022:- All the Answers provided below to help the students as a reference, You must submit your assignment at your own knowledge.
Disclaimer:- We do not claim 100% surety of solutions, these solutions are based on our sole expertise, and by using posting these answers we are simply looking to help students as a reference, so we urge do your assignment on your own.
For More NPTEL Answers:- CLICK HERE
Join Our Telegram:- CLICK HERE
Note:- In This Article we have provided the answers of Air Pollution And control Assignment 3 Answers, Assignment 2 Answers and Assignment 1 Answers
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