Question # 1

Major portion of ozone layer is foun in.

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Troposphere

Stratosphere

Mesosphere

Thermosphere

Which pollutant is not found in car exhaust gases?

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CO

O₃

NO₂

SO₃

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

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

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CO₂

CO

N₂

O₃

Iron and steel structure are damaged by.

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Carbon monoxide

Sulphur dioxide

Methane

Carbon dioxide

Atmosphere is divided into;

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3 regions

4 regions

5 regions

6 regions

Which is not a part of flue gas?

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Furans

Dioxins

HCl

H₂SO₄

Which of the following can be used as a fuel?

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Methanol

Ethanol

Bio-diesel

All of them

On which base atmosphere is divided into four regions?

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Change in pressure

Change in rediation

Change in temperature

Change in volume

The layer above troposphere extend upto 50 kilometers called.

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Mesosphere

Hydrosphere

Stratosphere

Thermosphere

Ozone depletion was first noticed is.

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1970's

1980's

1990's

1960's

The gas used by animals to perform respiration.

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O₂

N₂

SO₂

Cl₂

PAN stands for

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Poly aniline nitrate

Proxy acetyl nitrate

Poly acetyl nitrite

Proxy acetyl nitrite

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