Questions
Which of the following is/are depleting the useful ozone layer of the upper atmosphere?
- CFCs
- Suspended particulate matter
- Sulphur dioxide
- Nitrogen oxide
Which of the following pollutants contribute in the formation of smog?
a. Sulphur dioxide
b. Nitrogen oxide
c. Carbon monoxide
d. Carbon dioxide
- a and c
- a and b
- b and c
- b and d
Which of the following gases is acidic in nature?
- Oxygen
- Nitrogen dioxide
- Nitrogen
- Helium
Which of the following gases is not an air pollutant?
- N2
- NO2
- SO2
- CO
Which of the following activities causes air pollution?
- Planting of trees
- Taking measures to reduce smoke
- Using unleaded petrol
- Burning of fuels
Which of the following are the effects of acid rain?
I. Death of aquatic animals and plants
II. Acidification of soil
III. Corrosion of sculptures, monuments and buildings
- Only I and II
- Only II and III
- Only I and III
- All I, II and III
Which of the following statements is correct?
- Ozone is a non-toxic gas.
- The ozone layer protects the surface of Earth from infrared rays.
- Ozone hole is a region of marked thinning of the ozone layer at high altitudes.
- Ozone is present in the mesosphere.
Which of the following is a greenhouse gas?
- SO2
- CO2
- NO2
- CO
Which of the following combine to form smog?
(i) Smoke
(ii) CFCs
(iii) Fog
(iv) Dust
- (i) and (ii)
- (i) and (iii)
- (i) and (iv)
- (iii) and (iv)
What is the term used to describe the rise in the average temperature (by 0.5oC) of earth’s atmosphere?
- Global warming
- Acid rain
- Ozone depletion
- Greenhouse effect