Environment & Biodiversity MCQs
Environment, Ecology & Biodiversity Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations.
41. Sulfur hexafluoride is used in which of the following industries?
1) Magnesium processing
2) Semiconductor manufacturing
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:
Sulfur hexafluoride also called SF6 is one of the types of Fluorinated gas that has very high global warming potentials (GWPs) relative to other greenhouse gases. Sulfur hexafluoride is used in magnesium processing and semiconductor manufacturing industries.
42. Arrange the following gases in the increasing order of Global warming potential:
1) Methane
2) Nitrous oxide
3) Perfluoro carbons
4) Sulfur hexafluoride
Select the correct option from the codes given below:
[A] 1, 2, 3, 4
[B] 2, 1, 3, 4
[C] 1, 2, 4, 3
[D] 2, 1, 4, 3
Show Answer
Correct Answer: A [1, 2, 3, 4]
Notes:
Carbon dioxide (CO2) has a GWP of 1 and serves as a baseline for other GWP values. GWP of Methane is 21. GWP of Nitrous oxide is 310, GWP of Perfluorocarbons is 140-11,700, and GWP of Sulfur hexafluoride is 23,900. Hence the correct sequence is 1, 2, 3, 4.
43. Which of the following statements are correct with respect to Xerosere?
1. It is a type of plant succession which is limited by water availability.
2. Xerosere originates on rock surfaces which are in an unweathered state.
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:
Xerosere is a type of plant succession which is limited by water availability. Xerosere originates on rock surfaces which are in an unweathered state. There are different stages in a xerarch succession.
44. Which of the following is a vehicle that doesn’t emit tailpipe pollutants from the onboard source of power?
[A] BS VI vehicles
[B] Electric Vehicles
[C] ZEV vehicles
[D] Power vehicles
Show Answer
Correct Answer: C [ZEV vehicles]
Notes:
Zero emission vehicles which are also called as ZEV’s are those vehicles that do not emit any tailpipe pollutants such as carbon monoxide, carbon dioxide from the onboard source of power.
45. Which of the following countries are not a part of the Umbrella group?
[A] India
[B] Australia
[C] Japan
[D] New Zealand
Show Answer
Correct Answer: A [India]
Notes:
The Umbrella Group is a coalition of 12 non-european developed countries that was formed following the adoption of the Kyoto Protocol. The Group is made up of Australia, Belarus, Canada, Iceland, Israel, Japan, New Zealand, Kazakhstan, Norway, the Russian Federation, Ukraine, and the United States.
46. Littoral and Swamp Forests can be seen in–
[A] Howrah
[B] Kolkata
[C] South 24 Pargana
[D] Hooghly
Show Answer
Correct Answer: C [South 24 Pargana ]
Notes:
Littoral and Swamp Forests also known as
The Mangrove Forests is found in Ganga-Brahmaputra delta (Sundarbans) i.e. in the districts of South 24
Parganas and Southern region of North 24 Parganas.
47. Apart from Sundari trees, which other plants can also be seen in Mangrove forest?
[A] Asparagus
[B] Bamboo
[C] Dhundal
[D] All of the above
Show Answer
Correct Answer: C [Dhundal]
Notes:
Littoral and Swamp Forests or the Mangrove Forests mostly contain sundari mangrove trees. The other main
species found in these forests are
casuarina trees, goran, gnewa, baen,
dhundal, etc.
48. Which of the following is another name for the fish farming revolution?
[A] Blue revolution
[B] White revolution
[C] Yellow revolution
[D] Brown revolution
Show Answer
Correct Answer: A [Blue revolution]
Notes:
Blue Revolution means the adoption of a package programme to increase the production of fish and marine products. The Blue Revolution in India was started in 1970 during the Fifth Five-Year Plan when the Central Government sponsored the Fish Farmers Development Agency.
49. Gaia hypothesis is related to which of the following?
[A] Quantum Theory
[B] Living Organism
[C] Integers
[D] Origin of Earth
Show Answer
Correct Answer: B [Living Organism ]
Notes:
- The Gaia hypothesis proposes that living organisms interact with their inorganic surroundings on Earth to form a synergistic and self-regulating, complex system that helps to maintain and perpetuate the conditions for life on the planet.
50. Which of the following is regarded as the world’s largest sand island?
[A] K’gari (Fraser Island)
[B] Great Barrier Island
[C] North Stradbroke Island
[D] Moreton Island
Show Answer
Correct Answer: A [K’gari (Fraser Island)]
Notes:
K’gari, also known as Fraser Island, is recognized globally as the largest sand island. Located in Queensland, Australia, this World Heritage-listed island covers a vast expanse of 120 kilometers. Further adding to its ecological significance, it harbors varied ecosystems ranging from rainforests to perched freshwater lakes. Notably, it serves as a habitat for a pure breed of dingoes and is home to Boomanjin Lake, the world’s largest perched lake. The island carries a historic and cultural resonance as it was once associated with the Butchulla people and used as an Allied training base during World War II.
