Atmosphere MCQs with Answers

Which chemicals used in air conditioners, refrigerators, freezers, and packing foam manufacturing are responsible for ozone layer depletion?

• A.Methyl bromide
• B.Hydrochlorofluorocarbons (HCFCs)
• C.Carbon tetrachloride
• D.Chlorofluorocarbons (CFCs)

Which of the following chemicals are responsible for production of photochemical smog?

• A.Nitrogen oxides and Hydrocarbons
• B.Sulfur dioxide and Carbon monoxide
• C.Carbon dioxide and Methane
• D.Ozone and Chlorofluorocarbons

The normal concentration of ozone in the atmosphere is?

• A.300 DU
• B.200 DU
• C.400 DU
• D.500 DU

The depletion of ozone layer has been caused mainly by _?

• A.The release of chlorofluorocarbons into the atmosphere
• B.The release of carbon dioxide into the atmosphere
• C.The release of sulfur dioxide into the atmosphere
• D.The release of methane into the atmosphere

What is the main source of nitrogen oxides, sulphur oxides and carbon oxides?

• A.Volcanic eruptions
• B.Burning fossil fuels at high temperatures
• C.Decomposition of organic matter
• D.Industrial refrigeration leaks

Past Paper MCQ

Which of the following gas is mainly responsible for ozone layer depletion?

• A.Carbon dioxide
• B.Methane
• C.Chlorofluorocarbon
• D.Nitrous oxide

Ozone is a gas made up of atoms of oxygen.

• A.Two
• B.Three
• C.Four
• D.Five

A suspension of fine solid particles or liquid droplets in air or another gas is called an?

• A.Emulsion
• B.Aerosol
• C.Colloid
• D.Foam

Air pollution is caused by?

• A.Volcanic eruptions
• B.Burning of fossil fuels
• C.Industrial emissions
• D.All of these

Atmospheric pressure at Peshawar is than Murree.

• A.Greater
• B.Lesser
• C.Equal
• D.None of these