Question # 1

In the troposphere (lowest layer), the temperature decreases form 17°C to;

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-58°C

-93°C

-61°C

-49°C

Ozone depletion was first noticed is.

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1970's

1980's

1990's

1960's

Which one of the following is not an air pollutants?

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Nitrogen

Carbon dioxide

Nitrogen oxide

Ozone

Which one of the following gas has greater retaining capacity?

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O₂

N₂

CO

CO₂

Cause of global warming is:

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CO₂gas

SO₂gas

NO₂gas

O₂gas

Which pollutant is responsible for changing weather?

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Air pollutant

Water pollutant

Soil pollutant

All of them

Ozone is beneficial for us as it absorbs.....................

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Infrared Radiations

Ultraviolet radiations

Chlorofluorocarbons

Air pollutants

The gas used by animals to perform respiration.

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O₂

N₂

SO₂

Cl₂

The process by which atmospheric nitrogen is turned into nitrates in the soil is called.

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Nitration

Fixing

Oxidation

Reduction

The green house effect is proportional to the amount of which gas in air.

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CO₂

O₂

N₂

All of them

Our planet earth consists of ____________ natural Spheres.

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1

4

6

8

Incinerator reduces solid waste into .

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Ash

Flue gas

Heat

All of them

Which gas protects the Earth's surface from ultraviolet radiations?

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CO₂

CO

N₂

O₃

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