NPTEL Air Pollution and Control Week 2 Solutions

This set of MCQ(multiple choice questions) focuses on the NPTEL Air Pollution and Control Week 2 Solutions

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NPTEL Air Pollution and Control Week 2 Solutions

Q1. A plume is characterized by a tight, vertically constrained layer of air pollution coming from a point source (such as a chimney) called

a) Plume haze
b) Layered haze
c) Uniform haze
d) Plume and uniform haze

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Q2. It is a significant concern in climatology since recent albedo ____________ in the Arctic has increased heat _____________ at the surface, resulting in ice melting.

a) Increases, absorption
b) Decreases, absorption
c) Increases, adsorption
d) Decreases, adsorption

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Q3. Types of marine salts are:
i.   Sea salt
ii.  Sulfate aerosol 
iii. Nitrate aerosol
iv.  Mineral dust
Select correct answer

a) i, iii
b) ii, iii
c) i, ii, iv
d) i, ii, iii, iv

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Q4. Which of the following air pollution sources is the natural source of air pollution?

a) Pollen grains
b) Waste burning
c) Automobiles
d) Power plant

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NPTEL Air Pollution and Control Week 2 Solutions

Q5. Which of the following processes of formation of air pollutants only includes physical mechanisms? 

a) Metal catalysis
b) Ionization
c) Volatilization
d) Hydrolysis

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Q6. In the troposphere, ____________is the only known compound that can produce an oxygen atom during its photodissociation at available radiation.

a) Nitrogen dioxide
b) Sulphur dioxide
c) Carbon dioxide
d) Carbon monoxide

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Q7. If the atmospheric temperature increases with constant pressure the air density will start to_____________.

a) Increase
b) Decrease
c) Constant
d) don’t depend on temperature

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Q8. Match List-I (Meteorological parameters) with List-II (Measuring devices) and select the correct answer using codes given below: 

a) A-3, B-4, C-1, D-2
b) A-3, B-4, C-2, D-1
c) A-1, B-2, C-3, D-4
d) A-2, B-1, C-4, D-3

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Q9. The dry adiabatic lapse rate is equal to 

a) 9.8 ^oC/1000 m
b) 9.8 ^oF/1000 m
c) 6  ^oC/1000 m
d) 6 ^oF/1000 m

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NPTEL Air Pollution and Control Week 2 Solutions

Q10. Consider the following figure and select the correct option:
The type of atmospheric stability is:

a) Neutral
b) Absolute instability
c) Absolute stability
d) Conditional stability

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Previous Year -NPTEL Air Pollution and Control Week 2 Solutions

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

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Q2. Which of the following soil type is more resistant to acid rain

a) Quartzite
b) Granite 
c) Gneiss
d) Limestone

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Q3. Identify the criteria pollutant from the following options

a) Carbon dioxide (CO₂)
b) Dioxin
c) Carbon Monoxide (CO)
d) Asbestos 

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Q4. The ozone layer which protects the earth from harmful ultraviolet rays is located in:

a) Troposphere
b) Stratosphere
c) Mesosphere 
d) Exosphere

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NPTEL Air Pollution and Control Week 2 Solutions

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

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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 

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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

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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 

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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

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NPTEL Air Pollution and Control Week 2 Solutions

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 

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<< Pre- Air Pollution and Control Week 1 Assignment Solutions

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