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NPTEL Air Pollution and Control Assignment 1 Answers 2023
1. In 1981, which air pollution legislation was adopted in India?
a. The Air (Prevention and Control of Pollution) Rules
b. Air (Prevention and Control of Pollution) Act
c. Environment (Protection) Act (EPA)
d. Central Motor Vehicles Act
Answer:- b
2. Which gas was released during the Bhopal gas tragedy?
a. Methane
b. Styrene
c. Sulphur dioxide
d. Methyl Isocyanate
Answer:- d
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3. Photochemical smog comes under which scales of air pollution?
a. Micro scale
b. Meso scale
c. Macro scale
d, Global scale
Answer:- b
4. Select the incorrect statement.
a. Contamination is simply the presence of a substance where it should not be or at concentrations above the background.
b. Pollution is contamination that results in or can result in adverse biological effects on resident communities.
c. Pollutant is the substance that alters the composition of the natural atmosphere.
d. Sources are the places to which pollutants get absorbed or converted/transformed in some other constituents/forms.
Answer:- d
5. Which of the following gases is termed as the silent killer?
a. Methane
b. Carbon dioxide
c. Carbon monoxide
d. Sulphur dioxide
Answer:- c
6. ___________ is a colorless and highly irritating gas that is formed by a photochemical reaction just above the earth’s surface.
a. NOx
b. SOx
c. Ground-level ozone
d. CO
Answer:- c
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7. An observable alteration in the plant when exposed to air pollution is called
a. Damage
b. Injury
c. Stomata
d. None of the above
Answer:- b
8. Which symptom is considered as an acute effect of Arsenic in animals:
a. Severe salivation
b. Anemia
c. Diarrhea
d. Bone deformity
Answer:- c
9. Which of the following pollutants is mainly responsible for forming the black crust on the surface of the stone materials?
a. Particulate matter
b. SO2
c. CO
d. O3
Answer:- For Answer Click Here
10. Which of the following pollutants is the most sensitive to rubber degradation?
a. NO2
b. SO2
c. O3
d. CO2
Answer:- b
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| NPTEL Air Pollution and Control | Answer |
| Assignment 1 | Click Here |
| Assignment 2 | Click Here |
| Assignment 3 | Click Here |
| Assignment 4 | NA |
| Assignment 5 | NA |
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NPTEL Air Pollution and Control Assignment 1 Answers 2022
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
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