Categories of Air Pollutants

Q.

Which one of the following is a secondary pollutant???

Q.

Differentiate between gaseous and particulate pollutants.

Q. According to the central pollution control board, particles that are responsible for causing great harm to the human health are of diameter

1. 7.5 micrometers
2. 10.0 micrometers
3. 5.0 micrometers
4. 2.5 micrometers

Q. Of the following, pick out the constituents of a photochemical smog:

(A) Ozone

(B) Nitrogen

(C) PAN

(D) $H_{2}S{O}_4$

(E) DDT

(F) BHC

(G) $C{O}_2$

1. $A,B,C$
2. $A,B,C,G$
3. $A,B,C,D,G$
4. $A,B,C,E,F,G$

Q.

What is particulate matter?

Q.

How ${\mathrm{SO}}_2$ is air pollutant?

Q. Match column A with column B and choose the correct option.

Column A	Column B
1. Gaseous oxide	a. Dust
2. Particulate matter	b. VOC
3. Organic chemicals	c. $S{O}_2$

1. 1 - a, 2 - c, 3 - b
2. 1 - b, 2 - a, 3 - c
3. 1 - c, 2 - b, 3 - a
4. 1 - c, 2 - a, 3 -b

Q. The major source of pollution upto 80% of total air pollution in metropolitan cities is:

1. Automobiles
2. Coal based industries
3. Pesticides
4. Radioactivity and noise

Q. Water held tightly by soil particles as a thin film over their
surface is

1. Hygroscopic water
2. Gravitational water
3. Chemical water
4. Capillary water

Q. Sulphur dioxide is released by

1. Rubber industry
2. Mining industry
3. Power stations
4. Heavy automobiles

Q. An electrostatic precipitator in a thermal power plant is not able to generate high voltage of several thousands. Write the ecological implication because of it. [1]

Q. In coal fired power plants, electrostatic precipitators are fitted to control emission of

1. SPM
2. CO
3. (SO2)
4. (NOx)

Q. According to the Central Pollution Control Board, particles that are responsible for causing great harm to human health are of diameter

1. 2.50 micrometers
2. 5.00 micrometers
3. 10.00 micrometers
4. 7.5 micrometers

Q. Which one of the following statements is not valid for aerosols?

1. They are harmful to human health
2. They alter rainfall and monsoon patterns
3. They cause increased agricultural productivity
4. They have negative impact on agricultural land

Q.

Emissions from motor vehicles contain

1. Hydrocarbons

2. CO

3. Lead

4. All of these

Q. How do fossil fuels, cause air pollution?

Q. When combustion of coal takes place in insufficient air (oxygen) which gas is formed . Instead of carbon dioxide

1. Sulphur dioxide
2. Nitrous oxide
3. Carbon monoxide
4. Nitrogen peroxide

Q.

Burning coal is a source of

1. all of these

2. CO

3. CO₂

4. SO₃

Q. What impact does the waste accumulation have on the following?
Quality of air around us.

Q. Describe how ash causes air pollution.

Q.

A pollutant is any substance, chemical or other factors that:

1. Speeds up geochemical cycle

2. Changes the natural balance of our environment

3. Enhances plant life

4. Enhances the animal life at the cost of plants

Q. Viroids differ from prions in

Q.

Emissions from motor vehicles contain

1. Hydrocarbons

2. CO

3. Lead

4. All of these

Q. Burning of fossil fuels is the main cause of release of ______ dioxide gas in air.

Q. The major man-made sources of air pollution are ____________.

1. automobiles and industries
2. burning of garbage
3. brick kilns
4. all of the above

Q. A substance P has a tendency to absorb moisture from air. Hence, it is said to be

1. Hygroscopic
2. Hydrophobic
3. Hydromatic
4. None of these

Q. Which of the following is the way to control vehicular air-pollution in Indian cities ?

1. Use of CNG as fuel
2. Use of unleaded petrol in the vehicles
3. Use of catalytic converter in the vehicles
4. All of these

Q. Gasoline fuel, motor vehicles fuels, burning of wood and coal, solid waste disposal leads to which air pollutant?

1. Carbon Monoxide
2. Nitrogen Oxides
3. Sulphur Oxides
4. Hydrocarbons

Q. List out the major air pollutants.

Q. Read the following statements regarding particulate matter and select the incorrect ones.
(i) Particulate matter (PM) consists of soot, fly ash, dust, spores, pollen grains, etc.
(ii) Particulate matter is differentiated into settle able (larger than $10$ remaining in air for more than one day to several weeks) particulate matter.
(iii) SPM (suspended particulate matter) consists of aerosol, dust and mist.
(iv) Particulate matter causes respiratory diseases such as tuberculosis, allergy and many more diseases in animals and plants.
(v) According to Central Pollution Control Board (CPCB), particulate size of $2.5$ or less in diameter are responsible for causing the greatest harm to human health.

1. (iii) and (iv)
2. None of these
3. (ii) only
4. (i) and (ii)