Air Pollution

Q. The main contributors of acid rain are

1. Sulphur oxides and carbon oxides
2. Nitrogen oxides and sulphur oxides
3. Carbon dioxide and carbon monoxide
4. Nitrogen oxides and carbon oxides

Q. A contaminant is a/an .

1. unwanted substance.
2. desirable substance
3. useful substance

Q. <!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Mention three man-made sources of air pollution.

Q.

Question 7
Which of the following is not a greenhouse gas?
a) Carbon dioxide
b) Sulphur dioxide
c) Methane
d) Nitrogen

Q. The use of which of the following fuels in vehicles has decreased the level of air pollution

1. Coal

2. Natural gas

3. Compressed natural gas
4. Petroleum

Q. Microbes are used in cleaning environment. They are used in

1. Oil spills
2. Waste Water Treatment Plant
3. Preparing compost
4. All the above

Q. can be classified as a natural source of air pollution.

1. Volcanoes
2. Oil refineries
3. Factories

Q. When air is contaminated with ________ substances, then it is called air pollution.

1. harmful
2. clean
3. unwanted
4. poisonous

Q. What is relative contribution of $C{O}_2,C{H}_4$, CFC and $N_{2}O$ to global warming?

1. $20\%,14\%,60\%,6\%$
2. $6\%,14\%,20\%,60\%$
3. $14\%,6\%,20\%,60\%$
4. $60\%,20\%,14\%,6\%$
5. $20\%,60\%,14\%,6\%$

Q.

Due to global warming, by the end of 21^st century, the temperature of the atmosphere will go up as much as __.

Q. is the introduction of pollutants into the atmosphere which are harmful to living organisms.

1. Water pollution
2. Air pollution
3. Soil pollution

Q. Oxides of nitrogen and sulphur form when they react with water vapour present in atmosphere.

1. acids
2. bases
3. salts

Q.

Give a reason for carbon dioxide increases global warming on Earth.

Q.

Explain the differences between pure air and polluted air. [3 MARKS]

Q. [TBQ.5(b)]
What are Pollutants?

Q. Gases that trap sunlight are _______.

1. trapping gases
2. greenhouse gases
3. farmhouse gases
4. warm gases

Q. Identify the air pollutants which can be considered as natural source

1. Volcanic dust
2. Forest fire
3. Both (a) and (b)
4. Burning of fossil fuels

Q.

A pollutant which is directly released into the environment is called __________.

1. primary pollutant
2. secondary pollutant
3. none of these
4. tertiary pollutant

Q. Write any two effects of air pollution on plants.

Q. The use of which of the following fuels in vehicles has decreased the level of air pollution

1. Compressed natural gas
2. Coal
3. Petroleum

4. Natural gas

Q. Assertion :DDT shows biological magnification. Reason: UV radiations cause ozone depletion.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Algae are plant-like green microbes present in aquatic habitats.

1. True
2. False

Q.

Question 7
Which of the following is not a greenhouse gas?
a) Carbon dioxide
b) Sulphur dioxide
c) Methane
d) Nitrogen

Q. The use of which of the following fuels in vehicles has decreased the level of air pollution

1. Coal

2. Natural gas

3. Compressed natural gas
4. Petroleum

Q. Statement 1: Ozone layer protects us from ultraviolet rays from the Sun.

Statement 2: Global warming is not caused due to retention of infrared light on Earth.

1. Both statements are true
2. Both statements are false
3. Statement 2 is true, statement 1 is false
4. Statement 1 is true, statement 2 is false

Q. Gases that trap sunlight are _______.

1. trapping gases
2. greenhouse gases
3. farmhouse gases
4. warm gases