Question # 1

Almost all air crafts fly in which reion?

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Troposphere

Stratosphere

Mesosphere

Thermosphere

Ozone layer is not found is

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Upper stratosphere

Mid stratosphere

Lower stratosphere

All of them

Ozone is beneficial for us as it

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Absorb infrared radiation.

Absorb Ultraviolet radiations.

Absorb Chlorofluorocarbons

Absorb Air pollulant

Building are being damaged by acid rain because it attacks.

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Calcium sulphate

Calcium nitrate

Calcium carbonate

Calcium oxalate

The gas used by animals to perform respiration.

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O₂

N₂

SO₂

Cl₂

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

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40%

60%

70%

80%

How much amount of sunlight reaches up to earth and absorbed:

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26%

32%

50%

18%

Ozone has a smell

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Bitter

Rotten egg

Sweat

None of them

The recombination of O and O₂ in mid stratosphere is an

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Exothermic reaction

Endothermic reaction

Heat absorbing process

None of these

The waste products driven out because of the combustion of fossil fuels.

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Primary pollutant

Secondary pollutant

Tertiary pollutant.

None of them

The region in which ozone layere depletes is called.

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Ozone hole

Black hole

Both of them

None of them

Cause of global warming is:

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CO₂gas

SO₂gas

NO₂gas

O₂gas

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.

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