Question # 1

What gas is the major constituent of troposphere?

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Nitrogen

Oxygen

Hydrogen

Both a and b

Forest fires and burning of wood emit.

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CO₂

NO₂

SO₂

Cl₂

The sphere just above the Earth's surface is.

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Mescosphere

Stratosphere

Thermosphere

Troposphere

The percentage of sun light absorbed by atmospheric gases is.

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2%

10%

18%

25%

Which gas like a glass wall of g green house:

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CO

O2

CO2

N2

Which factor determines the severity of a pollutant?

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Chemical nature

concentration

Persistence

All of them

Which of the following is a poisonous gas.

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Oxygen

Ozone

Nitrogen

Carbon dioxide

The layer above troposphere extend upto 50 kilometers called.

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Mesosphere

Hydrosphere

Stratosphere

Thermosphere

The region in which ozone layere depletes is called.

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Ozone hole

Black hole

Both of them

None of them

A pollutant is a waste material that pollutes.

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Air

Water

Soil

All of them

Which gas acts as a glass wall of a green house?

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Oxygen

Carbon dioxides

sulphur dioxide

Hydrogen

In the troposphere (lowest layer), the temperature decreases form 17°C to;

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-58°C

-93°C

-61°C

-49°C

Fossil fuel means.

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Coal

Petroleum

Natural gas

All of them

Ozone depletion was first noticed is.

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1970's

1980's

1990's

1960's

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10th Class Chemistry Chapter 14 The Atmosphere English Medium KPK Boards Online Mcqs MCQs With Answers

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