Question # 1

About 99% atmosphere's lies within:

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30 kilometre

35 kilometre

15kilometre

11 kilometre

Atmosphere is divided into;

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3 regions

4 regions

5 regions

6 regions

Which gas saves the surface of earth from ultra violet radiation?

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CO₂

CO

N₂

O₃

Normal rain water is:

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weakly acidic

strongly acidic

weakly basic

strongly basic

The percentage of SO₂released by the combustion of coal and petroleum product.

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40%

60%

70%

80%

Thermosphere lies beyond.

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Stratosphere

Troposphere

Mesosphere

Biosphere

Which gas like a glass wall of g green house:

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CO

O2

CO2

N2

Iron and steel structure are damaged by.

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Carbon monoxide

Sulphur dioxide

Methane

Carbon dioxide

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

Cause of global warming is :

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CO₂ gas

SO₂gas

NO₂gas

O₂gas

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

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CO₂

O₃

NO₂

SO₂

ozone depletion (i.e O3--------------> O2 + O) occurs in:

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lower stratosphere

middle stratosphere

upper stratosphere

troposphere

Carbon monoxide is harmful to us because.

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It paralyses the lungs.

It damages lungs tissues.

It reduces oxygen carrying ability of haemoglobin

It makes the blood coagulate.

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