Causes of Air Pollution: Natural Activities and Human Activities

Q. Air pollutants arise from human activities only.

1. 
   True
2. 
   False

Q.

Smog is made up of smoke and carbon dioxide.

1. True
2. False

Q. Which major activities by nuclear power plants contribute in air pollution?

1. Use of pesticides and fertilizers
2. Nuclear melt down
3. Radioactive waste
4. Use of CFCs

Q. Level of which of the following gas increases in the atmosphere due to deforestation ?

1. Carbon dioxide
2. Sulphur dioxide
3. Nitrogen dioxide
4. Carbon monoxide

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

1. CFC
2. Carbon dioxide
3. Oxygen
4. Sulphur dioxide

Q. Which of the following is not a natural activity that causes air pollution?

1. 
   Forest fires
2. 
   Sand storms
3. 
   Nuclear power plants
4. 
   Volcanic eruptions

Q.

Forest fires give large amount of smoke and heat causing air pollution.

1. True

2. False

Q.

Write a short note on excessive use of man-made compounds containing both fluorine and chlorine.

Q. The substances which contaminate air are called __________.

1. air particles
2. dust particles
3. air pollutants
4. smog

Q. Chernobyl tragedy occurred in

1. 26th May, 1966
2. 26th April, 1986
3. 6th August, 1947
4. 9th May, 1945

Q. Smoke released from power plants on mixing with fog gives which reduces .

1. visibility
2. smog
3. temperature
4. acid rain

Q.

The pollutants released from air conditioners and refrigerators are:

1. chlorofluorocarbons

2. chlorocarbons

3. chorinecarbons

4. hydrocarbons

Q. ____ damage(s) the ozone layer of the atmosphere.

1. Helium
2. Oxides of nitrogen and sulphur
3. Hydrogen gas
4. Chlorofluorocarbons

Q. In the last decades, most serious nuclear reactor accident created MIC gas tragedy in

1. Russia (1990) and Bhopal (1996)
2. Bhopal (1984)
3. Bhopal (1994) and Russia (1990)
4. Ukraine and USA (1984)

Q. Which of the following waste is present in coolant water from atomic reactors?

1. Solid municipal waste
2. Low-level radioactive waste
3. High-level radioactive waste
4. None of the above

Q.

The $\mathrm{C}$ at the end of $\mathrm{CFC}$ (refrigerant) stands for ___________.

Q. Smog is a mixture of:

1. Smoke and Fog
2. Dust particles and water droplets
3. Smoke and dust particles
4. Fog and water droplets

Q.

Which of these contribute to particulate air pollution?

1. Smoke
2. Sulphur dioxide
3. Carbon monoxide
4. Carbon dioxide

Q.

Which of these is a natural source of pollution?

1. Mining

2. Forest fire

3. Oil spill

4. Nuclear reactor

Q.

______ is the combination of smoke and fog.

1. Cloud

2. Smog

3. Fly ash

4. Mist

Q. Exposure to high levels of radioactive radiations will result in which of the following diseases?

1. Cancer
2. Typhoid
3. Fluorosis
4. Asthma