Question # 1

Percentage of nitrogen in atmosphere is:

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20.94%

78.09%

0.93%

0.03%

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

Which pollutant is not found in car exhaust gases?

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CO

O₃

NO₂

SO₃

Which is not a character of SO₂

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it is a colourless gas

It has irritating smell

It causes suffocation

It do not form sulphuric acid

Carbon monoxide is harmful to use because it:

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Paralyses lungs

Damages lungs

Reduce oxygen carrying ability of hemoglobin

Make the blood coagulate

Which is the major effect of global warming?

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Increase in temperature.

Rise in sea level

Melting of glaciers

All of them

Atmosphere has regions.

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One

Two

Three

Four

Which one of the following is not air pollutants?

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N₂

CO

NO₂

O₂

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

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-58°C

-93°C

-61°C

-49°C

Which of the following is a poisonous gas.

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Oxygen

Ozone

Nitrogen

Carbon dioxide

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

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CO₂

CO

N₂

O₃

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