Atmosphere MCQs with Answers

Example(s) of primary pollutants is/are _?

• A.Carbon monoxide (CO)
• B.Nitrogen oxides (NOx)
• C.Sulfur dioxide (SO₂)
• D.All of these

_ is an allotropic form of oxygen which plays an important role in absorbing ultra-violet radiation of the sun?

• A.Carbon dioxide
• B.Methane
• C.Nitrogen
• D.Ozone

Past Paper MCQ

Vertical movement of air which exerts force, this force is called _?

• A.Atmospheric pressure
• B.Wind pressure
• C.Air current
• D.Gravitational force

Acid rain is mainly caused by emissions of ?

• A.Carbon monoxide and Ozone
• B.Carbon dioxide and Methane
• C.Sulfur dioxide and Nitrogen oxide
• D.Ammonia and Hydrogen sulfide

The free radical takes part in the destruction of the ozone layer.

• A.Chlorine
• B.Oxygen
• C.Nitrogen
• D.Hydrogen

The major pollutants present in the air is _?

• A.Carbon monoxide
• B.Sulphur dioxide
• C.Nitrogen oxides
• D.All of these

The number of ozone molecules that can be destroyed by one chlorine atom is _?

• A.10,000
• B.1,000,000
• C.100,000
• D.1,000

What is the name of the layer which protects the Earth from the Sun?

• A.Ionosphere
• B.Magnetosphere
• C.Ozone layer
• D.Thermosphere

What is the name of the gaseous layer that surrounds the Earth?

• A.Hydrosphere
• B.Atmosphere
• C.Lithosphere
• D.Biosphere

All of the following are true about air EXCEPT?

• A.Air exerts pressure
• B.Air is a mixture of gases
• C.Air is a pure substance
• D.Air has mass and occupies space