Environment & Biodiversity MCQs
Environment, Ecology & Biodiversity Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations.
41. Which of the following statements are correct regarding the Biological Diversity Act?
1) It was passed in 2002.
2) The Act was enacted to meet the obligations under the Convention on Biological Diversity
Select the correct option from the codes given below:
[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 & 2
Show Answer
Correct Answer: C [Both 1 & 2]
Notes:
The Biological Diversity Act is an Act of the Parliament of India which was enacted to meet the obligations under the Convention on Biological Diversity. It was passed in 2002.
42. Which of the following is the primary greenhouse gas emitted through human activities?
[A] Methane
[B] Carbon dioxide
[C] Carbon Monoxide
[D] Water vapour
Show Answer
Correct Answer: B [Carbon dioxide]
Notes:
Carbon dioxide is naturally present in the atmosphere as a part of the Earth’s carbon cycle. It is also the primary greenhouse gas which is emitted through human activities.
43. The Ozone-Depleting Substances (ODS) are found in which of the following layer of atmosphere ?
[A] Troposphere
[B] Stratosphere
[C] Mesosphere
[D] Ionosphere
Show Answer
Correct Answer: B [Stratosphere]
Notes:
The Ozone-Depleting Substances are Chlorofluorocarbons, HCFCs and Halons which are responsible for the depletion of ozone layer. These substances when transferred to Stratosphere cause the depletion of ozone layer.
44. Where is Nagavara lake located in Karnataka?
[A] Gulbarga
[B] Hubbali
[C] Kolar
[D] Bengaluru
Show Answer
Correct Answer: D [Bengaluru]
Notes:
Nagavara lake is located in Bengaluru, Karnataka. Bengaluru is known for several lakes formed from natural and man-made sources. Nagavara lake is among the prominent lakes in the city.
45. Which of the followings is an example of Montane Wet Temperate Forests?
[A] Maple
[B] Hogla
[C] Cocnut
[D] All of the above
Show Answer
Correct Answer: A [Maple]
Notes:
Montane Wet Temperate Forests is found in upper
reaches of North Bengal hills with an
altitude between 1650 m-3000 m. The main sites of these forests are Selimbong, Kankibong, Little Rangit,
Lopchu, Mahaldiram, Paglajhora, etc
in the districts of Darjeeling and
Kalimpong. The species commonly found in these forests are oak, maple,
pine, fir, deodar and spruce.
46. Which of the following gas is most harmful for ozone layer?
[A] Carbon dioxide
[B] Chlorofluro-carbon
[C] Nitrogen oxide
[D] Sulphur dioxide
Show Answer
Correct Answer: B [Chlorofluro-carbon]
Notes:
Chlorofluorocarbons (CFCs) are nontoxic, non-flammable chemicals containing atoms of carbon, chlorine, and fluorine. They are used in the manufacture of aerosol sprays, blowing agents for foams and packing materials, as solvents, and as refrigerants. Because CFCs contribute to?ozone?depletion in the upper atmosphere, the manufacture of such compounds has been phased out under the Montreal Protocol.
47. The five key indicators of global climate change of our planet are ____:
[A] Antarctic Sea ice, Oxygen, Rainfall, Drought and Sea level
[B] Sea-level, Rising temperatures, Rainfall, Nitrogen and Arctic Sea ice
[C] Arctic Sea ice, Carbon dioxide, Global Temperature, Sea level and Land ice
[D] None of the above
Show Answer
Correct Answer: C [Arctic Sea ice, Carbon dioxide, Global Temperature, Sea level and Land ice]
Notes:
National Aeronautics and Space Administration (NASA) has developed a series of interactive maps and graphs to describe the global climate and how it has changed over time. They focus on 5 key climate indicators:
• carbon dioxide concentration
• global surface temperature
• Arctic sea ice
• land ice
• sea level
48. Which is used as an Air pollution indicator?
[A] Algae
[B] Fungi
[C] Bacteria
[D] Lichens
Show Answer
Correct Answer: D [Lichens]
Notes:
Lichens are used as air pollution indicators, especially of the concentration of Sulphur dioxide in the atmosphere. If air is very badly polluted with sulphur dioxide there may be no lichens present, just green algae may be found. If the air is clean, shrubby, hairy and leafy lichens become abundant.
49. The potential for air pollution typically increases when the ventilation coefficient is which of the following?
[A] Greater than 11,000 m2/s
[B] Greater than 7,600 m2/s
[C] Less than 3,600 m2/s
[D] Less than 6,000 m2/s
Show Answer
Correct Answer: D [Less than 6,000 m2/s]
Notes:
The ventilation coefficient (m2/s) is a product of maximum mixing depth and average wind speed. It is used as an indicator of the atmosphere’s dispersive capability. High potential for air pollution is generally associated with ventilation coefficient values of less than 6000 m2/s, as established by researchers Portelli and Lewis in 1987.
50. Bandhavgarh National Park is in which state?
[A] Rajasthan
[B] Chhattisgarh
[C] Uttar Pradesh
[D] Madhya Pradesh
Show Answer
Correct Answer: D [Madhya Pradesh]
Notes:
Bandhavgarh National Park is located in the Umaria district of Madhya Pradesh. Bandhavgarh was declared a national park in 1968. This park is known for high density of Tigers. The park derives its name from the most prominent hillock of the area, which was said to be given by Hindu Lord Rama to his brother Lakshmana to keep a watch on Lanka (Ceylon).
