Question # 1

A group of gases that maintains temperature of atmosphere is.

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Carbon dioxide and water vapours

Nitrogen and carbon dioxide

Thermosphere

Troposphere

What percentage of nitrogen and oxygen is in the atmosphere.

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69%

79%

9%

89%

Which is not an air pollutant?

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CO₂

CO

SO₂

NH₃

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

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Nitration

Fixing

Oxidation

Reduction

Which is not a part of flue gas?

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Furans

Dioxins

HCl

H₂SO₄

Normal rain water is:

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weakly acidic

strongly acidic

weakly basic

strongly basic

Major portion of ozone layer is foun in.

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Troposphere

Stratosphere

Mesosphere

Thermosphere

Which one of these pollutants are not found in car exhaust fumes?

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CO₂

O₃

NO₂

SO₂

pH of acid rain is:

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7-5

6-7

1-2

4-5

Atmospheric region found between 50-58 km from the earthis.

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Thermosphere

Stratosphere

Mesophere

Thermosphere

Which gas is produce by the electrical lightening of air.

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NO

SO₂

SO₃

CO₂

Fossil fuel means.

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Coal

Petroleum

Natural gas

All of them

Which of the following is a poisonous gas.

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Oxygen

Ozone

Nitrogen

Carbon dioxide

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