Air Pollutants

Q.

Name the major air pollutants emitted by the vehicles?

Q.

What is air pollution? List some of its effects. [5 MARKS]

Q.

Substances that cause pollution are ________.

Q.

What is acid rain? What are two strong acids present in acid rain?

Q.

The agents that cause pollution are called _____ .

Q.

What are the gases released by the combustion of coal?

1. $C{H}_4$ and $C{O}_2$

2. $S{O}_2$ and $C{O}_2$

3. $N{O}_2$ and $C{O}_2$

4. $C{H}_4$ and $N{O}_2$

Q.

Low visibility during cold weather is due to

1. formation of fossil fuel

2. unburnt carbon particles or hydrocarbons suspended in air

3. lack of adequate power supply

4. none of these

Q.

Name some human activities responsible for air pollution?

Q.

Air contain ------ percent of carbon dioxide.

Q.

Automobile exhaust cause irritation of eyes and throat.

Q. Match Column-I with Column-II and select the correct answer.
$\begin{array}{cc}Column-I& Column-II\\ A.S{O}_2& P.Laughinggas\\ B.N_{2}O& Q.Carbonicacid\\ C.O_2& R.Acidrain\\ D.H_{2}O+C{O}_2& S.Combustion\end{array}$

1. A-P, B-R, C-S, D-Q
2. A-S, B-P, C-R, D-Q
3. A-Q, B-P, C-R, D-S
4. A-R, B-P, C-S, D-Q

Q.

What is asphyxia. What precautions should Ram take to prevent himself from this condition?

Q. Name any four air pollutants and describe their harmful effects.

Q.

Which of the following are sources of air pollution?

A. Vehicles
B. Dams
C. Oil refineries
D. Mining industries

1. Vehicles and mining industries

2. Dams and oil refineries

3. Oil refineries and mining industries

4. Vehicles, oil refineries and mining industries

Q. The pollutants chlorofluorocarbons are major source of air pollution contributed by:

1. industrial effluents
2. sewage pollutants
3. aerosols
4. all of the above

Q. Which gas is produced from incomplete burning of fuels such as petrol and diesel?

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

Q. CFCs are widely used as:

1. coolants in refrigeration
2. air conditioner
3. solvents in cleaners
4. all of the above

Q.

A. Fill in the blank spaces by choosing the correct words from the given list.

List: Oxygen, carbonic, sulphur dioxide gas, precipitation, helium

1.____________ can cause acid rain.

Q.

What does the distribution area of lichen and mosses indicate?

Q.

Low visibility during cold weather is due to unburnt/partially burnt ___ particles .

Q. The bioindicators of air pollution are:

1. ferns
2. mushrooms
3. algae
4. lichens

Q.

State true or false.
Carbon Dioxide is added to the atmosphere by the decay of organic matter.

1. True

2. False

Q. We are surrounded by smoke. Is this situation good for our health? Give reason.

Q. Which of the following has been causing most damage to the Taj Mahal?

1. Global warming
2. Dust
3. Smoke
4. Acid rain

Q. The air we breathe in modern times can no longer be said to be 'fresh'. With every breath that we take, we inhale billions of molecules of pollutant chemicals. Some man-made sources of pollution are mentioned here. Select the least controllable one.

1. Domestic cooking
2. Chemical and other industries
3. Motor cars and other vehicles
4. Thermal power plants

Q. In environmental chemistry the medium which is affected by a pollutant is called as the ________.

1. slag
2. solvent
3. receptor
4. sink

Q.

What are the major constituents of acid rain?

Q.

Acid rain possesses _________ acid and __________ acid.

Q. Which of the following is not an air pollutant?

1. $N{O}_2$
2. $N_2$
3. $CO$
4. $NO$

Q.

What kind of substances are contaminants?

1. Contained substance

2. Wanted substance

3. Unwanted substance

4. Useful substance