Question # 1

A pollutant is a waste material that pollutes.

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Air

Water

Soil

All of them

Normaily rain water is weakly acidic because.

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SO₃

CO₂

CO₃

NO₂

Infrared radiations emitted by the Earth are absorbed by.

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CO₂ and H₂O

N₂ and O₂

CO₂and N₂

O₂and CO₂

Which of the following is a secondary pollutant.

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CO₂

CO

SO₃

HF

Which gas is in involved in ozone depletion?

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Nitrogen

CFC's

Chlorine

All of them

Which gas is not present in atmosphere?

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Nitrogen

Oxygen

Helium

Carbon dioxide

Ozone id beneficial for us as it:

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absorbs infrared radiations

absorbs ultraviolet radiation

absorbs chlorofluorocarbons

absorbs air pollutants

Which gas like a glass wall of g green house:

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CO

O2

CO2

N2

Which pollutant is not found in car exhaust gases?

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CO

O₃

NO₂

SO₃

What percentage of nitrogen and oxygen is in the atmosphere.

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69%

79%

9%

89%

The smell of photocopies machine is due to the presence of.

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Chlorine gas

Neon gas

Helium gas

Ozone gas.

The stratosphere layer is at height above the earth's surface.

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0-12 km

12-50 km

50-85 km

65-120 km

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

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Thermosphere

Stratosphere

Mesophere

Thermosphere

In the bacterial decay, the compound of which element are emitted.

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Sulphur

Carbon

Nitrogen

All of them

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