Question # 1

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

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Infrared Radiations

Ultraviolet radiations

Chlorofluorocarbons

Air pollutants

A strange bitter smell noticed near photo copier machine is of.

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H₂S

SO₂

O₂

O₃

Atmosphere is divided into;

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3 regions

4 regions

5 regions

6 regions

Which one of the following is not a greenhouse Effect?

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Increasing atmosphere temperature.

Increasing food chains

increasing flood risks

Increasing sea-level

How many percentage of sunlight is absorbed by atmosphere gases.

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12%

18%

24%

30%

Which of the following can be used as a fuel?

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Methanol

Ethanol

Bio-diesel

All of them

Effects of ozone depletion are following except the one.

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Increases infectious diseases

Increases crops production

Can cause skin cancer

Can cause climatic changes.

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

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CO₂

CO

N₂

O₃

A pollutant is a waste material that pollutes.

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Air

Water

Soil

All of them

Normally rain water is weakly acidic because of.

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SO₃ gas.

CO₂gas.

SO₂gas.

NO₂gas.

Which of the following is a secondary pollutant.

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CO₂

CO

SO₃

HF

What gas is the major constituent of troposphere?

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Nitrogen

Oxygen

Hydrogen

Both a and b

Which metal present in acid rain affect the aquatic life by clogging fish gills?

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Lead

Chromium

Aluminium

Mercury

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