Definition of Air Pollution

Q.

List any three human activities that lead to air pollution.

Q. Air pollution is severe in

1. Cities
2. Densely populated areas
3. Industrial areas
4. All of the above

Q.

Combustion of fossil fuels in insufficient air produces ___________ instead of carbon dioxide.

Q.

In the given statement, the underlined words are jumbled up. Write then in their correct form. Vehicles produce high levels of pollutant like carbon dioxide, nitrogen oxide, nobrac moondexi, and mosek.

Q. Air pollution is the introduction of _____ matter into the atmosphere.

1. particulate
2. All of the above
3. Biological
4. Chemical

Q.

What is meant by weather of a place?

Q.

Mention five causes of air pollution?

Q.

The sun is the primary source of energy that causes changes in the weather.

1. True
2. False

Q. Air pollution can be of

1. only B
2. both A and B
3. artificial or manmade
4. natural origin

Q.

Can we say "changes in weather are caused by the sun"? If yes support your answer.

Q.

26 Match the items in column I to those in column II

Column 1	Column 2
moving air	photosynthesis
layer in which we live	inert gas
stratosphere	water vapor
radon	protein
oxygen	smoke and fog
carbon dioxide	ozone layer
exhaled air	combustion
humidity	wind
smog	increased carbon dioxide
nitrogen	troposphere

Q. Air pollution is severe in

1. Cities
2. Densely populated areas
3. Industrial areas
4. All of the above

Q. Select the correct option in the given table.

1. $\begin{array}{cccc}& \text{Pollutant}& \text{Source}& \text{Pollutants}\\ & & & \text{effect}\\ & \text{Sulphur}& \text{Fossil fuel}& \text{Global}\\ & \text{dioxide}\left(S{O}_2\right)& \text{burning}& \text{warming}\end{array}$
2. $\begin{array}{cccc}& \text{Pollutant}& \text{Source}& \text{Pollutants}\\ & & & \text{effect}\\ & N{O}_x& \text{Automobile}& \text{Photochemical}\\ & & \text{exhaust}& \text{smog}\end{array}$
3. $\begin{array}{cccc}& \text{Pollutant}& \text{Source}& \text{Pollutants}\\ & & & \text{effect}\\ & \text{Chlorofluoro}& \text{Fossil fuel}& \text{Ozone}\\ & \text{carbons (CFCs)}& \text{burning}& \text{depletion}\end{array}$
4. $\begin{array}{cccc}& \text{Pollutant}& \text{Source}& \text{Pollutants}\\ & & & \text{effect}\\ & \text{Methane}\left(C{H}_4\right)& \text{Agricultural}& \text{Acid deposition}\\ & & \text{farm}& \end{array}$

Q. Major pollutant of air is:

1. $S{O}_2$
2. $N{O}_2$
3. both A and B
4. $CFC$s
5. all of the above

Q. What are the major sources of air pollution?

Q.

Define weather?

Q. The day-to-day condition of the atmosphere at a place with respect to the _______ is called the weather at that place.

1. temperature
2. humidity, rainfall
3. wind-speed
4. all of the above

Q.

Name and briefly explain four ways by which pollution of air is caused by humans.

Q. What are the main causes of air and water pollution?

Q. Air pollution effects are usually found on

1. Leaves
2. Flowers
3. Stems
4. Roots

Q.

Tick the most appropriate answer.

5. The humans pollute the air by :

1. burning a vast amount of coal

2. burning waste materials

3. using petrol and diesel vehicles

4. all the above

Q. Air is a mixture of various gases. One of the gases is 21% part of the air and is essential for the survival of human beings. This gas is:

1. Nitrogen
2. Ozone
3. Oxygen
4. Argon

Q. Which of these is not an element of weather?

(a) temperature
(b) sun
(c) humidity
(d) rainfall

Q. Ozone exists in earth stratosphere and is responsible for protecting humans from harmful _______.

1. clouds
2. rains
3. ultraviolet rays
4. all of the above

Q. Air pollution is the introduction of _____ matter into the atmosphere.

1. Biological
2. Chemical
3. particulate
4. All of the above

Q.

Name and explain four activities by which humans pollute air in a big way.

Q. Air pollution is caused by:

1. nature.
2. both nature and man.
3. forestation.
4. human.

Q. What Air pollution?

Q. Major source of air pollution is

1. Biogas
2. Fossil fuels
3. NO${}_2$
4. Coke

Q. Air pollution takes place in two different layers of the Earth's atmosphere: _______ and __________.

1. Troposphere and stratosphere
2. Mesosphere and troposphere
3. Stratosphere and hydrosphere
4. Troposphere and hydrosphere