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SEBA Class 10 Social Geography MCQ Chapter 2 Environment and Environmental Problems
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Environment and Environmental Problems
PART – II: [GEOGRAPHY]
MULTIPLE CHOICE QUESTIONS
1. The extent of earth’s surface covered by hydrosphere is over ________.
(a) 81%
(b) 71%
(c) 62%
(d) $1%
Ans: (b) 71%.
2. Change in hydrosphere and its status depends on the status of _________.
(a) lithosphere.
(b) atmosphere.
(c) biosphere.
(d) all of the above.
Ans: (a) lithosphere.
3. The number of species of plants and animals identified in the lithosphere is about _______.
(a) 2.7 million.
(b) 2.35 million.
(c) 1.25 million.
(d) 1.75 million.
Ans: (d) 1.75 million.
4. The normal carbon dioxide content of the atmosphere is _________.
(a) 0.035%
(b) 1.03%
(c) 0.95%
(d) 2.15%
Ans: (a) 0.035%.
5. The chief cause for global warming is the increased presence of _________.
(a) nitrogen.
(b) oxygen.
(c) carbon dioxide.
(d) methane.
Ans: (c) carbon dioxide.
6. Bank erosion caused by the Brahmaputra river in Assam is an example of ____________ environmental problem.
(a) local.
(b) regional.
(c) national.
(d) global.
Ans: (b) regional.
7. The most abundant gas present in the atmosphere is _________.
(a) carbon dioxide.
(b) oxygen.
(c) argon.
(d) nitrogen.
Ans: (d) nitrogen.
8. During the last 150 years, the extent of the increase of carbon dioxide in the atmosphere is estimated to be about ________.
(a) 30%
(b) 20%
(c) 40%
(d) 15%
Ans: (a) 30%.
9. As per _________ environment is an outcome of the interaction among land, water, air and life.
(a) Carl Ritter.
(b) Arnaldo Faustini.
(c) Immanuel Kant.
(d) Peter Haggett.
Ans: (d) Peter Haggett.
10. The hydrosphere covers about ______ of the earth’s atmosphere.
(a) 51%
(b) 61%
(c) 71%
(d) 81%
Ans: (c) 71%.
11. The status and change in the hydrosphere are dependent on the status of _________.
(a) lithosphere.
(b) atmosphere.
(c) biosphere.
(d) all of these.
Ans: (d) all of these.
12. The atmosphere extends to a height of about ________ from the earth’s surface.
(a) 5,000 km.
(b) 10,000 km.
(c) 15,000 km.
(d) 20,000 km.
Ans: (b) 10,000 km.
13. The term ‘homo sapiens’ means:
(a) plants.
(b) animals.
(c) human beings.
(d) land.
Ans: (c) human beings.
14. The carbon dioxide content in the atmosphere is _________ in normal conditions.
(a) 0.035%
(b) 0.0035%
(c) 0.135%
(d) 0.0135%
Ans: (a) 0.035%.
15. Land pollution created by a small scale
industry is an example of _________.
(a) local problem.
(b) regional problem.
(c) global problem.
(d) none of these.
Ans: (a) local problem.
16. Which of the following has disturbed the interrelationship among the environmental elements?
(a) Spread of human settlements.
(b) Expansion of agricultural land.
(c) Growth of industries and urban centers.
(d) All of these.
Ans: (d) All of these.
17. Which of the following is an environmental pollutant?
(a) Zinc.
(b) Sulfur dioxide.
(c) Carbon monoxide.
(d) All of these.
Ans: (d) All of these.
18. The percentage of argon in air is _________
(a) 78.08%
(b) 20.94%
(c) 0.93%
(d) 0.035%
Ans: (c) 0.93%.
19. Mount Pinatubo is located in _______.
(a) Chile.
(b) France.
(c) Brazil.
(d) Philippines.
Ans: (d) Philippines.
20. _______ comes out from the earth’s interior during volcanic eruption.
(a) Ashes.
(b) Smoke.
(c) Gases.
(d) All of these.
Ans: (d) All of these.
21. About ________ of the world’s land surface is covered by deserts.
(a) 15%
(b) 20%
(c) 25%
(d) 30%
Ans: (b) 20%.
22. In 1977, a meeting was held at ________ under the patronage of United Nations to discuss about the problem of desertification.
(a) Nairobi.
(b) Tanzania.
(c) Morocco.
(d) Cairo.
Ans: (a) Nairobi.
23. Which continent is highly affected by the process of desertification?
(a) North America.
(b) South America.
(c) Europe.
(d) Africa.
Ans: (a) North America.
24. Which of the following is a greenhouse gas?
(a) Carbon dioxide (CO2)
(b) Methane (CH4)
(c) Nitrous oxide (N2O)
(d) All of these.
Ans: (d) All of these.
25. Life forms exist in ________.
(a) Hydrosphere.
(b) Lithosphere.
(c) Atmosphere.
(d) Biosphere.
Ans: (d) Biosphere.
26. The environmental issues that affect the entire world are termed as _________ problem.
(a) Global.
(b) Local.
(c) Regional.
(d) National.
Ans: (a) Global.
27. Water scarcity in winter due to shallowing of wetlands, is an example of __________ problem.
(a) Global.
(b) National.
(c) Local.
(d) Regional.
Ans: (c) Local.
28. A meeting was held at Nairobi under the patronage of the _________ to discuss about the problem of desertification:
(a) United Nations.
(b) UNESCO.
(c) WWF.
(d) UNDP.
Ans: (a) United Nations.
29. Seas, oceans, rivers, lakes, etc form a part of the earth’s _________.
(a) Atmosphere.
(b) Lithosphere.
(c) Hydrosphere.
(d) Biosphere.
Ans: (c) Hydrosphere.
30. Which one of these is a major global problem?
(a) Underground water scarcity.
(b) Overgrowing population.
(c) Deforestation.
(d) Global warming.
Ans: (d) Global warming.
31. How many species of plants and animals have been identified in the lithosphere so far?
(a) 1.29 million.
(b) 3.78 million.
(c) 1.75 million.
(d) 2.52 million.
Ans: (c) 1.75 million.
32. Which problem is caused due to the ozone hole?
(a) Damage due to UV radiations.
(b) Acid rain.
(c) Poisonous metals.
(d) Volcanic eruption.
Ans: (a) Damage due to UV radiations.
33. Which of these is an example of greenhouse gas?
(a) Hydrogen sulphide.
(b) Methane.
(c) Ozone.
(d) Carbon monoxide.
Ans: (b) Methane.
34. The most polluted river in the world is __________.
(a) Yamuna.
(b) Kaveri.
(c) Chenab.
(d) Ganga.
Ans: (d) Ganga.
35. CNG is a _______ fuel.
(a) Polluted.
(b) Clean.
(c) Harmful.
(d) Fossil.
Ans: (b) Clean.
36. Which of these is the major environmental problem of the world?
(a) Desertification.
(b) Landslide warming.
(c) Artificial floods.
(d) All of the above.
Ans: (d) All of the above.
37. Select the major cause of desertification out of the options given below.
(a) Decrease in population growth.
(b) Overgrazing.
(c) Depletion of ozone layer.
(d) Increase of carbon dioxide in the atmosphere.
Ans: (b) Overgrazing.
38. The consequence of global warming is ___________.
(a) Increase in atmospheric temperature.
(b) Melting of snow in the polar regions.
(c) Expansion of desertification.
(d) All of the above.
Ans: (d) All of the above.
39. ________ massively contribute to the rise in global warming.
(a) Afforestation.
(b) Biomass energy.
(c) Chlorofluorocarbons.
(d) Reduced use of fossil fuels.
Ans: (c) Chlorofluorocarbons.
40. Which cycle of nature passes through all the four components of the environment?
(a) Hydrological cycle.
(b) Carbon cycle.
(c) Energy cycle.
(d) All of the above.
Ans: (d) All of the above.
41. The process of_________ of the environment by harmful substances is called pollution.
(a) Contamination.
(b) Upliftment.
(c) Progress.
(d) Decontamination.
Ans: (a) Contamination.
42. Application of ________ in the fields degrades the natural soil quality.
(a) Manure.
(b) Cow dung.
(c) Pesticides and insecticides.
(d) Cover crops.
Ans: (c) Pesticides and insecticides.
43. Which harmful gas was emitted in the eruption of Mount Pinatubo in the Philippines?
(a) Sulphur dioxide.
(b) Carbon monoxide.
(c) Carbon dioxide.
(d) Methane.
Ans: (a) Sulphur dioxide.
44. What is the source of temperature for the earth’s surface and atmosphere?
(a) Solar energy.
(b) Thermal energy.
(c) Wind energy.
(d) Tidal energy.
Ans: (a) Solar energy.
45. Out of the total incoming solar energy __________ is reflected back.
(a) 28%
(b) 30%
(c) 27%
(d) 49%
Ans: (b) 30%.
46. Which river in China is noted for extreme water pollution?
(a) Yangtze River.
(b) Danube River.
(c) Amazon River.
(d) Mekong River.
Ans: (a) Yangtze River.
47. 71% of the earth’s atmosphere is covered by the ________.
(a) Hydrosphere.
(b) Lithosphere.
(c) Biosphere.
(d) Stratosphere.
Ans: (a) Hydrosphere.
48. North America is highly affected by the process of ________.
(a) Acid rain.
(b) Extraction of fossil fuels.
(c) Deforestation.
(d) Desertification.
Ans: (d) Desertification.
49. What percent of solar energy is absorbed by the atmosphere?
(a) 21%
(b) 19%
(c) 16%
(d) 24%
Ans: (b) 19%.
50. Desertification can be controlled by ___________.
(a) Rainwater harvesting.
(b) Prevention of soil erosion.
(c) Construction of artificial irrigation system.
(d) All of the above.
Ans: (d) All of the above.
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