Categories of Air Pollutants

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. With reference to the given flowchart choose the correct option.

1. (i) Hydrophobic (ii) Sulphuric acid (iii) Sulphate (iv) Nitrogen sulphate
2. (i) Hygroscopic (ii) Sulphur solution (iii) Sulphuric acid (iv) Acid rain
3. (i) Ionic (ii) Super sulphur oxide (iii) Sulphonyl hydroxide (iv) Sulphonyl superoxide
4. (i) Hygroscopic (ii) Sulphuric acid (iii) Sulphurous aerosol acid (iv) Acid rain

Q. Which of the following is a secondary pollutant ?

1. $C{O}_2$
2. $S{O}_2$
3. $CO$
4. $O_3$

Q.

Which of the following is/are closely related to respiratory illness in humans?

1. SO₂ pollution

2. NO₂ pollution

3. noise pollution

4. Mercury pollution

Q.

Which of the following is aerosol?

1. CFC

2. NOX

3. SOX

4. CO

Q.

Burning coal is a source of

1. all of these

2. CO

3. CO₂

4. SO₃

Q. Sulphur dioxide is released by

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

Q.

The major source(s) of emissions of $S{O}_x$ is/are

1. all of these

2. smelting of ores

3. combustion of petroleum

4. petroleum refining

Q.

Emissions from motor vehicles contain

1. Hydrocarbons

2. CO

3. Lead

4. All of these

Q. According to Central Pollution Control Board (CPCB), which particulate size in diameter (in micrometers) of the air pollutants is responsible for greatest harm to human health?

1. 1.5 or less
2. 10 or less
3. 5.2-2.5
4. 2.5 or less