Categories of Air Pollutants

Q.

Which of the following is not an air pollutant?

1. Nitrogen oxide

2. Particulate matter

3. Sulphur dioxide

4. Nitrogen

Q. Lichen can be used as industrial pollution indicators because

1. They will grow well in polluted area
2. All of these.
3. They will not grow in polluted area
4. They show dark colour in polluted area

Q.

Carbon monoxide is a pollutant because it

1. Reacts with O₂

2. Reacts with haemoglobin

3. Inhibits glycolysis

4. Inactivates nervous system

Q.

Which of the following gases cause acid rain?

1. Ammonia

2. Nitrogen

3. Oxygen

4. Sulphur dioxide

Q.

The mixture of dust particles, fog and smoke from various sources can be termed as:-

1. brick kilns

2. smog

3. garbage

4. particulate matter

Q.

Fill in the blanks :

(i) Rubber particles and dust raised by running motor vehicles are examples of ............... pollutants.

(ii) Too frequent exposure to ......................... in a medical diagnostic technique may damage chromosomes.

(iii) Thermal power plants give out a lot of ...................... waste water.

(iv) Sewage is a liquid waste from ........................... .

Q.

Brick kiln is a natural source of air pollution.

1. True

2. False

Q.

Explain briefly :

Coal gas is not used for domestic purposes.

Q. Distinguish between natural and man-made sources of pollution.

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

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

Q. What is the difference between
(i) Pollutant and contaminant
(ii) smoke and somg
(iii) air and water pollution?

Q.

In November 2016, New Delhi faced a severe increase in air pollution levels which continued for more than 2 weeks. Identify the major contributors to this situation from the below-given options.

1. True

2. False

3. Stubble burning in the nearby farming villages

4. Cigarette smoking

Q.

Which of the following sources release particulate pollutants?

1. All of the above

2. mining

3. stone drilling

4. wearing of rubber tyres

Q.

The burning of household garbage generates

1. Carbon dioxide

2. Compost

3. Manure

4. Oxygen

Q.

Photochemical smog is formed :

1. When Ultraviolet light from the sun reacts with carbon monoxide in the atmosphere

2. When Ultraviolet light from the sun reacts with nitrogen oxide in the atmosphere

3. When Ultraviolet light from the sun reacts with carbon dioxide in the atmosphere

4. All of the above

Q.

Which of the following is aerosol?

1. CO

2. SOX

3. NOX

4. CFC

Q. Identify the main source(s) of air pollution in cities.

1. Vehicles
2. Industries
3. Garbage incineration
4. Acid rain

Q.

how r brick kilns a source of gases nd particulate matter that cause air pollution?

Q.

Emissions from motor vehicles contain

1. Hydrocarbons

2. CO

3. Lead

4. All of these

Q.

Which of these are the major gaseous pollutants from vehicles?

1. Both A & C

2. It will start smelling bad and become home to micro-organisms.

3. It will start causing diseases.

4. It will stay in the same condition.

Q. Identify the gases depicted with their percentage composition in the given pie chart.

1. (i) Nitrogen (ii) oxygen (iii) carbon dioxide (iv) argon (v) water vapour
2. (i) Water vapour (ii) oxygen (iii) nitrogen (iv) carbon dioxide (v) argon
3. (i) Oxygen (ii) nitrogen (iii) water vapour (iv) argon (v) carbon dioxide
4. (i) Nitrogen (ii) oxygen (iii) argon (iv) carbon dioxide (v) water vapour

Q.

Which among the following are air pollutants?

1. Oil spills

2. Forest fires

3. Volcanic eruptions

4. Acid rain

Q. Identify the gases depicted with their percentage composition in the given pie chart.

1. (i) Nitrogen, (ii) oxygen, (iii) carbon dioxide, (iv) argon, (v) water vapour
2. (i) Water vapour (ii) oxygen (iii) nitrogen (iv) carbon dioxide (v) argon
3. (i) Oxygen (ii) nitrogen (iii) water vapour (iv) argon (v) carbon dioxide
4. (i) Nitrogen (ii) oxygen (iii) argon (iv) carbon dioxide (v) water vapour

Q.

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

1. smelting of ores

2. combustion of petroleum

3. petroleum refining

4. all 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) Sulphuric acid (iii) Sulphurous aerosol acid (iv) Acid rain
3. (i) Ionic (ii) Super sulphur oxide (iii) Sulphonyl hydroxide (iv) Sulphonyl superoxide
4. (i) Hygroscopic (ii) Sulphur solution (iii) Sulphuric acid (iv) Acid rain

Q. State whether the following statements are true or false:
(i) Thermal pollution refers to the release of only hot gases into the atmosphere.
(ii) Pollution and pollutants are one and the same thing.
(iii) Plant based and animal based products are non-biodegradable.
(iv) Soil is polluted by fertilizers and pesticides.

Q.

how is fog formed? why we see fog more on the crops? can we make fog in our home without the use of dry ice?

Q. The following phrase contains an underlined word. Choose the closest definition of the word.

1. difficult
2. unwanted
3. unnecessary
4. crazy

Q.

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

1. smelting of ores

2. combustion of petroleum

3. petroleum refining

4. all of these

Q. In language of chemistry , Write the importance of hydrogen sulphide and sulphur dioxide.