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 Formaldehyde?
1. It is a colorless and strong-smelling gas.
2. It leads to irritation in the eyes, nose and allergies.
3. It is used in carpets, particle boards, and insulation foam.
Select the correct option from the codes given below:
[A] Only 1 & 2
[B] Only 2 & 3
[C] Only 1 & 3
[D] 1, 2 & 3
Show Answer
Correct Answer: D [1, 2 & 3]
Notes:
Formaldehyde is a colorless and strong-smelling gas. It leads to irritation in the eyes, nose and allergies. It is used in carpets, particle boards, and insulation foam. It is made of made of hydrogen, oxygen and carbon.
42. The Atomic Energy Act of 1982 was introduced to deal with which of the following types of wastes?
[A] Electronic waste
[B] Non-biodegradable waste
[C] Radioactive waste
[D] None of the above
Show Answer
Correct Answer: C [Radioactive waste]
Notes:
The Atomic Energy Act of 1982 was introduced to deal with radioactive wastes. “Atomic Energy” refers to energy released from atomic nuclei as a result of any process, including the fission and fusion processes.
43. Every bench of the tribunal constituted under NGT 2010, must consist of which of the following?
[A] At least one expert member and two judicial member.
[B] At least two expert member and one judicial member.
[C] At least one expert member and one judicial member.
[D] At least two expert member and two judicial member.
Show Answer
Correct Answer: C [At least one expert member and one judicial member.]
Notes:
The sanctioned strength of the tribunal constituted under NGT 2010 is 20 expert members and 20 judicial members. Every bench of such tribunal must consist of at least one expert member and one judicial member.
44. Which of the following human activity has influenced global warming?
[A] By causing changing in gravitational force
[B] By planting more trees
[C] By changing the radiative balance governing the Earth
[D] By protecting environment
Show Answer
Correct Answer: C [By changing the radiative balance governing the Earth]
Notes:
Different Human activities ranging from the burning of fossil fuels to cutting of trees has influenced global surface temperature by changing the radiative balance governing the Earth on various timescales.
45. In which of the following year did Bhopal Gas Tragedy took place?
[A] 1982
[B] 1984
[C] 1986
[D] 1988
Show Answer
Correct Answer: B [1984]
Notes:
The Bhopal gas tragedy also referred to as the Bhopal disaster is considered among the world’s worst industrial disasters. It was a gas leak incident on the night of 2–3 December 1984 at the Union Carbide India Limited pesticide plant which is located in Bhopal, Madhya Pradesh.
46. Which of the following instrument is used to record the earthquake wave?
[A] Hydrograph
[B] Seismograph
[C] Richter scale
[D] Pycnometer
Show Answer
Correct Answer: B [Seismograph]
Notes:
A seismograph which is also called as a seismometer, is an instrument which is used to detect and record the earthquake waves. The first seismograph was invented in 132 A.D.
47. Consider the following:
- Algal bloom refers to a rapid increase or accumulation in the population of algae in an aquatic ecosystem.
- Algal blooms can occur in freshwater as well as marine environments.
Which of the above statements is / are correct?
[A] Only 1
[B] Only 2
[C] Both 1 & 2
[D] Neither 1 & 2
Show Answer
Correct Answer: C [Both 1 & 2]
Notes:Both Statements are correct:
- Algal bloom refers to a rapid increase or accumulation in the population of algae in an aquatic ecosystem.
- Algal blooms can occur in freshwater as well as marine environments.
48. What species of small frog is found in the dense forested hill streams and forest streams in the Western Ghats of India?
[A] Nyctibatrachus manalari
[B] Micrixalus Saxicola
[C] Micrixalus Fuscus
[D] Both B and C
Show Answer
Correct Answer: D [Both B and C]
Notes:Micrixalus fuscus (dusky torrent frog or brown tropical frog) is a species of small frog that is found in the dense forested hill streams in the Western Ghats.
Micrixalus saxicola (Malabar tropical frog, black torrent frog, small torrent frog, Jerdon’s olive-brown frog) is a species of frog of the Micrixalidae family and is found in the forest streams in the Western Ghats.
49. To conserve coral reefs, the Government of India declared one of the following as Marine Park, that is ______:
[A] Gulf of Kutch
[B] Gulf of Mannar
[C] Andaman Islands
[D] Lakshadweep Islands
Show Answer
Correct Answer: A [Gulf of Kutch]
Notes:
For the protection of coral reefs, the Gulf of Kutch was declared Marine National Park under the provisions of the Wildlife (protection) Act, 1972. It is the first national marine park of India.
50. Consider the following gases:
- Carbon dioxide
- Nitrogen
- Nitrous oxide
- Water vapour
Which of the above gases are considered as greenhouse gases?
[A] 1, 3 & 4
[B] 1 & 4
[C] 1 & 3
[D] 1, 2 & 4
Show Answer
Correct Answer: A [1, 3 & 4 ]
Notes:A greenhouse gas is a gas that absorbs and emits radiant energy within the thermal infrared range, contributing to the greenhouse effect. The essential greenhouse gases in the Earth’s atmosphere include:
- Water vapor
- Carbon dioxide
- Methane
- Nitrous oxide
- Ozone
Here, Nitrogen is not considered a greenhouse gas.
