Question # 1

Major portion of ozone layer is foun in.

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Troposphere

Stratosphere

Mesosphere

Thermosphere

PAN stands for

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Poly aniline nitrate

Proxy acetyl nitrate

Poly acetyl nitrite

Proxy acetyl nitrite

Which gas is not present in atmosphere?

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Nitrogen

Oxygen

Helium

Carbon dioxide

Ozone is beneficial for us as it

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Absorb infrared radiation.

Absorb Ultraviolet radiations.

Absorb Chlorofluorocarbons

Absorb Air pollulant

Global warming causes rising of the sea level. The cause of global warming is.

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CO₂ gas.

SO₂gas.

NO₂gases.

O₃gas.

Atmosphere has regions.

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One

Two

Three

Four

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

Iron and steel structure are damaged by.

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Carbon monoxide

Sulphur dioxide

Methane

Carbon dioxide

Which gas is in involved in ozone depletion?

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Nitrogen

CFC's

Chlorine

All of them

The pH of acid rain.

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2

3

4

5

About 99% of atmospheric mass lies in.

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35 km

30 km

15 km

16 km

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

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CO₂

O₃

NO₂

SO₂

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