POLLUTION

Ozone depletion is caused due to increase in the level of

• Water vapour

• Oxygen

• Chlorofluorocarbon

• Carbon monoxide

What type of chemical weathering is enhanced by acid rain?

• Hydrolysis

• Dissolution

• Oxidation

• None of the above

Which of the following gas affects human health by reducing the blood’s ability to carry oxygen to different parts of the body?

• Carbon dioxide

• Sulphur dioxide

• Carbon monoxide

• Nitrous dioxide

The best way to dispose plant waste is

• 
• 
• 
• 

Which of the following units is used to measure the intensity of noise?

• Phon

• Hz

• Decibel

• Watts/m

In the metro city of Kolkata, the major cause of air pollution is____________

• Industries

• Automobile

• Both of these

• none of these

Atmospheric pollutants are mainly present in_____

• Ionosphere

• Stratosphere

• Mesosphere

• Troposphere and lower stratosphere

Air pollution is an increasing problem in developing Countries due to________

• Burning of more coal to produce electricity.

• Changing lifestyles.

• Unavailability of environment-friendly technologies.

• All the above

The main source of water pollution is_______

• Sewage water

• Industrial pollutants

• Acid rain

• All of the above

Which of the following is a water-borne disease?

• Typhoid 

• Meningitis

• Cholera

• Asthma