Air and Water Pollution
Learn about the causes, effects, and control of air and water pollution, including air pollutants, greenhouse gases, acid rain, smog, and waterborne diseases.
Questions
The destruction of ozone by CFCs will allow which of the following harmful radiations from the Sun to reach the Earth?
- Gamma rays
- X-rays
- Ultraviolet rays
- Infrared rays
- None of the above
Which of the following is not an air pollutant?
- Sulphur dioxide
- Phosphate
- Nitrogen oxide
- Carbon monoxide
- Chlorofluorocarbons
Which of the following is/are the sources of air pollution?
a. Smoke emitted from homes by the burning of fuels.
b. Exhaust gases emitted by motor vehicles.
c. Smoke emitted by factories and thermal power plants.
- Only a
- Only b
- a and c
- b and c
- a, b and c
When inhaled, ___________ combines with the hemoglobin of our blood and reduces blood's oxygen carrying capacity.
- carbon monoxide
- carbon dioxide
- sulphur dioxide
- CFCs
- nitrogen oxide
Which of the following is not a greenhouse gas?
- Carbon dioxide
- Methane
- Nitrous oxide
- Water vapour
- Nitrogen
Which of the following pollutants reacts with water vapour present in the atmosphere to form nitric acid, which eventually falls to the Earth in the form of acid rain?
- Sulphur dioxide
- Carbon dioxide
- Nitrogen oxides
- SPM
- CFCs
Which of the following statements is/are false?
a. Sulphur dioxide is produced by the burning of coal in factories and thermal power plants.
b. Nitrogen oxides attack the breathing system and lead to lung congestion.
c. Smog is a deadly air pollutant which is formed by the combination of smoke and fog.
- Only a
- Only a and b
- Only b
- Only b and c
- None of the above
Which of the following pollutants contribute in the formation of smog?
a. Sulphur dioxide
b. Nitrogen oxides
c. Carbon monoxide
d. Carbon dioxide
- a and c
- a and b
- b and c
- b and d
- a and d
Which of the following statements is/are false?
a. An unwanted and harmful substance that contaminates the environment is called a pollutant.
b. The two main gases present in the air are oxygen and hydrogen.
c. A substance becomes an air pollutant when it is present in the air in such concentrations which are high enough to have a harmful effect on the living and non-living things.
- Only a
- Only a and b
- Only b
- Only b and c
- Only c
Which of the following is not a water borne disease that is caused due to the drinking of contaminated water?
- Cholera
- Cancer
- Typhoid
- Diarrhoea
- Jaundice
Which of the following air pollutant covers the leaves of plants and trees and prevents photosynthesis?
- Dust
- CFCs
- Carbon dioxide
- Carbon monoxide
- Sulphur dioxide
Which of the following acids dissolve in rainwater and fall to the Earth in the form of acid rain?
a. Sulphuric acid
b. Oxalic acid
c. Nitric acid
d. Acetic acid
- a and b
- b and c
- a and d
- a and c
- b and d
Which of the following pollutants is depleting the useful ozone layer of the upper atmosphere?
- CFCs
- Carbon monoxide
- Suspended Particulate Matter
- Sulphur dioxide
- Nitrogen oxide
Which of the following statements is/are false?
a. The slow corrision of marble of a monument by acid rain is known as 'marble cancer'.
b. The greenhouse is a structure or building made of glass walls and glass roof in which the plants which need protection from cold weather are grown.
c. The longer wavelength heat rays coming from the Sun can pass through the glass walls and glass roofs of a greenhouse and get trapped inside it.
- Only a
- Only a and b
- Only b
- Only b and c
- Only c
Which of the following fuels cannot be used to control air pollution?
- LPG
- CNG
- PNG
- Petrol
- Bio-gas
In an electric water filter, which of the following is used to kill all the harmful germs present in the tap water?
- Ultraviolet radiations
- X-rays
- Gamma radiations
- Infrared radiations
- None of the above