Tag: air around us

Questions Related to air around us

The significant natural causes of air pollution are:

water and air and their importance natural resources- air, water and land air around us air chemistry introduction to natural resources land

  1. volcanic eruptions

  2. forest fires

  3.  both A and B both

  4. none of the above

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Correct Option: C
Explanation:

The significant natural causes of air pollution are volcanic eruptions and forest fires.

The major causes of man-made air pollution are: 

water and air and their importance natural resources- air, water and land air around us air chemistry introduction to natural resources land

  1. burning oil

  2. coal

  3. gasoline

  4. all of the above

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Correct Option: D
Explanation:

Burning oil, coal, gasoline and other fossil fuels are the major causes of man-made air pollution.

All forest fires emit(s):

water and air and their importance natural resources- air, water and land air around us air chemistry introduction to natural resources land

  1. carbon monoxide

  2. sulphur dioxide

  3. nitrogen dioxide

  4. all of the above

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Correct Option: D
Explanation:

All forest fires emit carbon monoxide, sulphur dioxide, nitrogen dioxide, ozone, and particulate matter.

Which of the following is not a source of air pollution?

water and air and their importance natural resources- air, water and land air around us air chemistry introduction to natural resources land

  1. Automobile exhaust

  2. Burning of firewood

  3. Windmill

  4. Power plant

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Correct Option: C
Explanation:

Windmill are used to produce energy by the motion of wind, it is a renewable source of energy and does not cause air pollution.

Match column I with column II and pick the correct option from the codes given below:

Column I Column II
p. Peroxy acetyl nitrate 1. Waste incineration
q. Polycyclic aromatic hydrocarbons 2. Global warming
r. Dioxins 3. Photochemical smog
s. Indigo 4. Carcinogens
t. IR active molecules 5. Vat dye
water and air and their importance natural resources- air, water and land air around us air chemistry introduction to natural resources land

  1. p-3, q-4, r-1, s-5, t-2

  2. p-1, q-2, r-3, s-4, t-5

  3. p-3, q-5, r-1, s-2, t-4

  4. p-5, q-3, r-1, s-2, t-4

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Correct Option: A

Which among the given is not a natural source of air pollution?

water and air and their importance natural resources- air, water and land air around us air chemistry introduction to natural resources land

  1. Automobile exhausts

  2. Vegetation decay

  3. Forest fire

  4. Volcanic eruptions

Show answer
Correct Option: A
Explanation:
The automobile exhaustion is not a natural source of air pollution, it is man-made air pollution.
It is emitted as a result of the combustion of fuels such as natural gas, gasoline, petrol,bio-diesel etc. It discharges a large amount of $CO _2$(carbon dioxide), NO, CO, ozone etc.

Hence, the correct option is A.

Which of the following applications reveal that nitrogen is inert?

water and air and their importance natural resources- air, water and land air around us air chemistry

  1. Tinned food products

  2. Making of fertilizers

  3. Refrigerant

  4. Electric bulbs

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Correct Option: A,D
Explanation:

Usage of nitrogen in tinned food products, in electric bulbs and as a refrigerant indicating the inactive nature of nitrogen.

The component of air essential for growth of plants and animals is ________.

water and air and their importance natural resources- air, water and land air around us air chemistry

  1. oxygen

  2. nitrogen

  3. hydrogen

  4. argon

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Correct Option: B
Explanation:

The component of air which is essential for growth of plants and animals is nitrogen. Atmospheric nitrogen is converted by bacteria through nitrogen fixation to nitrate and nitrites, which is consumed by plants. Animals also need nitrogen, as all amino acids which are the building blocks of proteins have basic element of nitrogen.