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Important Environment Knowledge MCQs (Set-I)

Environment Knowledge MCQs
Written by Shahzad F. Malik

Important Environment Knowledge MCQs (Set-I)

1) Who wrote the book “Hotspots Revisited?”
(a) Walter Rosen
(b) Norman Myers
(c) Russell Mittermeier
(d) Rachel Carson
Answer: (c)

2) The year declared by UN as International Year of Forests
(a) 2011
(b) 2010
(c) 2009
(d) 2008
Answer: (a)

3) Office of the Inspector General (Forests) Ministry of Climate Change is located a
(a) Lahore
(b) Islamabad
(c) Karachi
(d) Quetta
Answer: (b)

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4) The greenhouse gas with high heat trapping capability
(a) Carbon dioxide (CO2)
(b) Nitrogen Dioxide (NO2)
(c) Sulfur hexafluoride (SF6)
(d) Methane CH₄
Answer: (d)

5) The primordial earth’s atmosphere was
(a) Reducing
(b) With free oxygen
(c) Cooler
(d) All of these
Answer: (a)

6) The number of biosphere reserves in Pakistan recognized as a part of world network of biospheres
(a) 4
(b) 2
(c) 6
(d) 7
Answer: (d)
As of 2017, the Lal Suhanra Biosphere Reserve and Ziarat Juniper Forest are the only two biosphere reserve in Pakistan, which were approved by UNESCO in 1977 and 2013 respectively

7) Growing rice results in the release of
(a) Methane
(b) Nitrous oxide
(c) Ozone
(d) Hydroflurocarbons
Answer: (a)

8) What is the difference between a threatened species and an endangered species?
(a) A threatened species means that the population is likely to become endangered. An endangered species has population numbers so low that it is likely to become extinct
(b) A threatened species is already extinct. An endangered species means that the population’s numbers have increased greatly over the last 5 years
(c) A threatened species means that the population is likely to become endangered. An endangered species is already extinct
(d) A threatened species and an endangered species are the same
Answer: (a)

9) Which of the following is a native species of Pakistan?
(a) Two horned rhinoceros
(b) Rhesus monkey
(c) Komodo dragon
(d) Snow Leopard
Answer: (d)

10) Which book written by Rachel Carson resulted in banning DDT in USA
(a) Silent spring
(b) The environmentalism
(c) Biomagnification
(d) Food chain
Answer: (a)

11) Which of the following competition is severe?
(a) Intra specific
(b) Inter specific
(c) Extra specific
(d) None
Answer: (a)

12) The water (prevention and control) pollution act came into force in the year
(a) 1972
(b) 1974
(c) 1977
(d) 1981
Answer: (b)

13) The conference on ‘the human environment” held from 5 to 16 June 1972 was held in…
(a). Stockholm, Sweden
(b). Tbilisi, Soviet Union
(c). Rio de Janeiro, Brazil
(d). Kyoto, Japan
Answer: (a)

14) Man and biosphere programme is affiliated with…
(b). IUCN
(c). WWF
Answer: (a)

15) What does “system” imply in the term “ecosystem”?
(a). Environment
(b). Interdependent complex
(c). System approach
(d). Ecological systems
Answer: (b)

16) The term “ecology” was defined for the first time in 1970 by…
(a). Ernst Haeckel
(b). St. Hillarie
(c). St. George Jackson Mivart
(d). H. Reiter
Answer: (d)

17) The “Vienna Convention” related with environment is basically related with..
(a) international trade in endangered species
(b) protection of ozone layer
(c) biodiversity conservation
(d) preservation of cultural environment
Answer: (b)

18) Which of the following gases has an important role in maintaining atmosphere temperature?
(a). nitrogen
(b). Oxygen
(c). argon
(d). Carbon dioxide
Answer: (d)

19) The world’s biggest GHG emitter
(d).South Africa
Answer: (a)

20) The outermost zone of a biosphere reserve is
(a). manipulation zone
(b). core zone
(c). buffer zone
(d). any of these
Answer: (a)

21) Pollination by birds is called:
(a) Autogamy
(b) Ornithophily
(c) Entomophily
(d) Anemophily
Answer: (b)

22) The main source of water pollution is:
(a) Sewage Water
(b) Rain Water
(c) Atmospheric Pollutants
(d) Well-Water
Answer: (a)

23) Which gas is mainly responsible for greenhouse effect?
(a) Carbon dioxide (CO2)
(b) Oxygen (O2)
(c) Hydrogen H2
(d) Water vapors
Answer: (a)

24) Cutting of trees in a forest is called;
(a) Reforestation
(b) Afforestation
(c) Deforestation
(d) None of these
Answer: (c)

25) What percent of fire-related deaths are due to smoke inhalation rather than burns?
(a) 10%
(b) 50%
(c) 80%
(d) 99%
Answer: (c)

26) The sound of which intensity is regarded as the safe noise level for a city?
(a) 80 dB
(b) 45 dB
(c) 120 dB
(d) 60 dB
Answer: (b)

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27) Which of the following disease is not caused by water pollution?
(a) Typhoid
(b) Dysentery
(c) Malaria
(d) Jaundice
Answer: (c)

28) The only species of cat that lives and hunts in groups is:
(a) Lion
(b) Leopard
(c) Jaguar
(d) Cougar
Answer: (a)

29) The study of phenomena at very low temperatures is called:
(a) Heat transfer
(b) Morphology
(c) Crystallography
(d) Cryogenics
Answer: (d)

30) The study of how people use tools to perform work and how people physically relate to their working environment is called:
(a) Engineering
(b) Ergonomics
(c) Agronomy
(d) Physiology
Answer: (b)

31) Plants are killed at low temperature because:
(a) Desiccation takes place owing to the withdrawal of water from vacuolated protoplasm
(b) Precipitation of cell proteins
(c) Cells rupture due to the mechanical pressure of ice
(d) All the above three are correct
Answer: (d)

32) Which one of the chemicals is responsible for the reduction of ozone content of the atmosphere?
(a) S02
(b) Chlorofluorocarbon
(c) HCI
(d) Photochemical smog
Answer: (b)

33) A type of plastic that is biodegradable has been in the news lately. The ingredient that makes it biodegradable is:
(a) Vegetable oil
(b) Petroleum
(c) Cornstarch
(d) Leather
Answer: (c)

34) Who was the marine biologist and author of Silent Spring who was one of the first people to warn of the dangers of pesticides like DDT?
(a) Jacques Cousteau
(b) Rachel Carson
(c) Charles Darwin
(d) Marlin Perkins
Answer: (b)

35) At room temperature, most elements are in which phase of matter?
(a) Solid
(b) Liquid
(c) Gas
(d) Plasma
Answer: (a)

36) Acid rains occur when atmosphere is heavily polluted with:
(a) CO, CO2
(b) Smoke particles
(c) Ozone
(d) SO2 and NO2
Answer: (d)

37) Spraying of DDT on crops causes pollution of:
(a) Soil and Water
(b) Air and Soil
(c) Crops and Air
(d) Air and Water
Answer: (a)

38) Soil erosion can be prevented by:
(a) Increasing bird population
(b) Afforestation
(c) Removal of vegetation
(d) Over grazing
Answer: (b)

39) The per capita birth rate of a population is known as its:
(a) Mortality
(b) Natality
(c) Population density
(d) Carrying capacity
Answer: (b)

40) Which of the following is primarily composed of calcium carbonate?
(a) Fish scales
(b) Shark teeth
(c) Oyster Shells
(d) Whale bones
Answer: (c) | Environment Knowledge MCQs

41) The word atom is from a Greek word meaning:
(a) Small
(b) Indivisible
(c) Unseen
(d) Visible
Answer: (b) | Environment Knowledge MCQs

Check Also: National Interest of Pakistan | Definition of National Interest

42) Pollination by wind is called:
(a) Autogamy
(b) Entomophily
(c) Anemophily
(d) Ornithophily
Answer: (c) | Environment Knowledge MCQs

43) Atolls are most probably formed by:
(a) A rise in the earth’s crust
(b) Sand brought in from the mainland
(c) Collapse of the center of a volcano
(d) Coral reef up building during subsidence
Answer: (d) | Environment Knowledge MCQs

44) Most commercial nuclear power plants worldwide are cooled by:
(a) Sodium
(b) Mercury
(c) Helium
(d) Water
Answer: (d) | Environment Knowledge MCQs

45) The uranium fuel used worldwide is mainly in the form of:
(a) U3O8
(b) UO2
(c) UF6
(d) U metal
Answer: (b) | Environment Knowledge MCQs

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46) Spent fuel from a nuclear power plant cools down and loses most of its radioactivity through decay. In the first year, spent fuel loses about what percentage of its radioactivity?
(a) 10 percent
(b) 50 percent
(c) 80 percent
(d) 100 percent
Answer: (c) | Environment Knowledge MCQs

47) The study of poisons is called:
(a) Oncology
(b) Toxicology
(c) Phrenology
(d) Ergonomics
Answer: (b) | Environment Knowledge MCQs

48) A device used to measure the amount of moisture in the atmosphere is called a:
(a) Hydrometer
(b) Hygrometer
(c) Anemometer
(d) Barometer
Answer: (b) | Environment Knowledge MCQs

49) Plants get their nitrogen from:
(a) Rain
(b) The soil
(c) The air
(d) The bedrock
Answer: (b) | Environment Knowledge MCQs

50) What is the major visible constituent of the exhaust plume from a natural gas-fired power plant?
(a) Carbon dioxide
(b) Carbon monoxide
(c) Smoke
(d) Water
Answer: (d) | Environment Knowledge MCQs

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About the author

Shahzad F. Malik

Shahzad Faisal Malik is the administrator of CSSTimes.pk and is responsible for managing the content, design, and overall direction of the blog. He has a strong background in Competitive Exams and is passionate and sharing information with others.
Shahzad Faisal Malik has worked as a Graphic Designer/Content Creator at CSSTimes in the past. In his free time, Shahzad Faisal Malik enjoys watching Cricket, writing blogs for different websites and is always on the lookout for new and interesting content to share with the readers of this website.
As the website administrator, Shahzad Faisal Malik is dedicated to providing high-quality content and fostering a welcoming and engaging community for readers. He looks forward to connecting with readers and hearing their thoughts and feedback on the website.

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