Hello NPTEL Learners, In this article, you will find NPTEL Air Pollution and Control Assignment 2 Week 2 Answers 2023. All the Answers are provided below to help the students as a reference don’t straight away look for the solutions, first try to solve the questions by yourself. If you find any difficulty, then look for the solutions.
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| NPTEL Air Pollution and Control Assignment 1 Answers | Click Here |
| NPTEL Air Pollution and Control Assignment 2 Answers | Click Here |
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NPTEL Air Pollution and Control Assignment 2 Answers 2023:
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Q.1. A plume is characterized by a tight, vertically constrained layer of air pollution coming from a point source (such as a chimney) called
Q.2. It is a significant concern in climatology since recent albedo _ in the Arctic has increased heat __ at the surface, resulting in ice melting.
- Increases, absorption
- Decreases, absorption
- Increases, adsorption
- Decreases, adsorption
Q.3. Types of marine salts are:
i. Sea salt ii. Sulfate aerosol iii. Nitrate aerosol iv. Mineral dust
Select correct answer:
- i, iii
- ii, iii
- i, ii, iv
- i, ii, iii, iv
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Q.4. Which of the following air pollution sources is the natural source of air pollution?
Q.5. Which of the following processes of formation of air pollutants only includes physical mechanisms?
- Metal catalysis
- Ionization
- Volatilization
- Hydrolysis
Q.6. In the troposphere, ____________is the only known compound that can produce an oxygen atom during its photodissociation at available radiation.
Q.7. If the atmospheric temperature increases with constant pressure the air density will start to_____________.
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Q.8. Match List-I (Meteorological parameters) with List-II (Measuring devices) and select the correct answer using codes given below:
List I (Meteorological parameters) List II (Measuring devices)
A. Wind speed and direction 1. Pyranometer
B. Temperature 2. Tipping bucket type
C. Rainfall 3. Sonic anemometer
D. Solar radiation 4. Platinum resistance thermometer
- A-3, B-4, C-1, D-2
- A-3, B-4, C-2, D-1
- A-1, B-2, C-3, D-4
- A-2, B-1, C-4, D-3
Q.9. The dry adiabatic lapse rate is equal to
- 9.8 oC/1000 m
- 9.8 oF/1000 m
- 6 oC/1000 m
- 6 oF/1000 m
Q.10. Consider the following figure and select the correct option:
The type of atmospheric stability is:
- Neutral
- Absolute instability
- Absolute stability
- Conditional stability
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Disclaimer: This answer is provided by us only for discussion purpose if any answer will be getting wrong don’t blame us. If any doubt or suggestions regarding any question kindly comment. The solution is provided by Chase2learn. This tutorial is only for Discussion and Learning purpose.
About NPTEL Air Pollution and Control Course:
The objective of the course is to impart the knowledge and understanding of causes and effects of air pollution and their controlling mechanisms. The course will provide a deeper understanding of air pollutants, pollution inventory and modelling. The course also imparts knowledge on the impacts of air pollution on different aspects such as policy, human health and various contemporary technological innovation for betterment of air quality.
Course Outcome:
- Week 1 : Air Pollution: Introduction and Impacts of air pollution on human health, vegetation, animals, building materials, structures, and atmosphere, soil and water bodies.
- Week 2 : Sources, classification and formation/transformation of air pollutants: Meteorology and Atmospheric Stability.
- Week 3 : Lapse Rate, Plume Behaviour, and Air Quality Monitoring, Air Quality Index (AQI)
- Week 4 : Air Quality Modelling, Gaussian dispersion models: point, line and area source models
- Week 5 : Emissions Inventory: Transport, Industrial, Agricultural, Residential and Commercial sectors
- Week 6 : Application of Remote sensing/Satellite based data in emission inventory, Source apportionment using receptor modelling.
- Week 7 : Indoor air pollution: sources, types and health impacts. Sampling, assessment and evaluation of Indoor air quality.
- Week 8 : Global and regional environmental issues of air pollution: Ozone depletion, Climate change, Global warming, Acid rain.
- Week 9 : Air pollution control devices, equipment and their design.
- Week 10 : Air pollution emission standards, National and international policies, acts, rules and regulations.
- Week 11 : Emerging technologies and strategies to mitigate air pollution, Current challenges and way forward.
- Week 12 : Lab-based measurements of air pollutants.
CRITERIA TO GET A CERTIFICATE:
Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100
Final score = Average assignment score + Exam score
YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.
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