Question # 1

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

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CO₂ gas.

SO₂gas.

NO₂gases.

O₃gas.

What gas is the major constituent of troposphere?

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Nitrogen

Oxygen

Hydrogen

Both a and b

The envelope of different gases around the earth is called.

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Atmosphere

Brosphere

Lithosphere

Hydrosphere

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

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CO₂

O₃

NO₂

SO₂

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

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Thermosphere

Stratosphere

Mesophere

Thermosphere

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

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Chlorine gas

Neon gas

Helium gas

Ozone gas.

Which gas is also known as life gas for plants.

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CO

CO₂

O₂

NO₂

Ozone depletion was first noticed is.

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1970's

1980's

1990's

1960's

Which factor determines the severity of a pollutant?

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Chemical nature

concentration

Persistence

All of them

Carbon monoxide is harmful to us because.

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It paralyses the lungs.

It damages lungs tissues.

It reduces oxygen carrying ability of haemoglobin

It makes the blood coagulate.

Building and Monuments lose their beauty and shine due to

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U.V radiations

Chlorofluoro carbons

Acid rain

IR radiations.

The major constituents of troposphere are:

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carbon dioxide and argon

nitrogen and oxygen

argon and oxygen

carbon dioxide and oxygen

Which one of the following is not air pollutants?

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N₂

CO

NO₂

O₂

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