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 Suspended particulate matter?
1. It consists of solids in the form of smoke, dust, and vapour in the air that can remain suspended for extended periods and is also the main source of haze which reduces visibility.
2. The finer of these particles of these pollutants when breathed in can lodge in our lungs and cause lung damage and respiratory problems.
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:
Suspended particulate matter consists of solids in the form of smoke, dust, and vapour in the air that can remain suspended for extended periods and is also the main source of haze which reduces visibility. The finer of these particles of these pollutants when breathed in can lodge in our lungs and cause lung damage and respiratory problems.
42. What is the term used to describe air pollution that results from the interaction of sunlight with certain chemicals in the atmosphere?
[A] Smog
[B] Photochemical smog
[C] Industrial smog
[D] None of the above
Show Answer
Correct Answer: B [Photochemical smog]
Notes:
Photochemical smog term used to describe air pollution that results from the interaction of sunlight with certain chemicals in the atmosphere. It is sometimes known as “LA Type Smog”.
43. Which of the following statements are correct regarding Climate forcings?
1) Negative forcings warm the earth
2) Positive forcings cool the earth.
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: D [Neither 1 & 2]
Notes:
Climate “forcings” are the factors that either increase the effects on the climate system or decrease the effects on the climate system. Positive forcings warm the earth while negative forcings actually cool the earth.
44. Which of the following phases are involved in Environment Impact Assessment process in India?
1. Screening
2. Scoping
3. Baseline data collection
4. Impact prediction
Select the correct option from the codes given below:
[A] Only 1 & 2
[B] Only 1, 2 & 3
[C] Only 1, 3 & 4
[D] 1, 2, 3 & 4
Show Answer
Correct Answer: D [1, 2, 3 & 4]
Notes:
The phases involved in Environment Impact Assessment process in India are as follows: Screening, Scoping, Baseline data collection, Impact prediction, Assessment of alternatives, delineation of mitigation measures and environmental impact statement, Public hearing, Environment Management Plan, Decision making and Monitoring the clearance conditions.
45. 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.
46. Which of these is not a species of Sub-alpine Forests?
[A] Birch
[B] Rhododendrons
[C] Oak
[D] All of the above
Show Answer
Correct Answer: D [All of the above ]
Notes:
The species commonly found in Sub-alpine Forests are junipers, birch, rhododendrons,
berberis, maling bamboo, laurel, etc. Oak and magnolia occur around the region of
Kalimpong. In the upper Singalila range, dwarf rhododendrons, meadows and
small flowering bushes occur.
47. Trans-boundary pollution (or) Acid rain is caused by ____:
[A] Hydrocarbon
[B] Carbon monoxide
[C] Nitrogen oxide and sulphur dioxide
[D] Carbon dioxide
Show Answer
Correct Answer: C [Nitrogen oxide and sulphur dioxide]
Notes:
Acid rain is a rain or any other form of precipitation that is unusually acidic i.e. it possesses elevated levels of hydrogen ions (low pH). It is caused by emissions of oxides of sulphur (SO2 or SO3) and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids.
48. Which of the following statement is incorrect?
[A] Forest protect the soil from erosion
[B] Plants and animals in a forest are not dependent on one another
[C] Forests influence the climate and water cycle
[D] Soil helps forest to grow and regenerate
Show Answer
Correct Answer: B [Plants and animals in a forest are not dependent on one another]
Notes:
Plants and animals interact with each other in the environment. In the food chain, some animals each other animals and use them for food. Some animals depend on others through symbiotic relationships. Plants provide a global benefit to animals by releasing oxygen into the atmosphere.
49. Dodo is a bird categorized under ____:
[A] Endangered
[B] Critically endangered
[C] Extinct
[D] Rare
Show Answer
Correct Answer: C [Extinct]
Notes:
The dodo (Raphus cucullatus) is an extinct flightless bird that was endemic to the island of Mauritius, east of Madagascar in the Indian Ocean. Subfossil remains show the dodo was about 1 metre (3ft 3 inches) tall and may have weighed 10.6–17.5 kg (23– 39 lb) in the wild. The closest living relative of the dodo is the Nicobar pigeon.
50. Solar energy is converted into chemical energy during ____:
[A] Photosynthesis
[B] Combustion
[C] Transition
[D] Fusion
Show Answer
Correct Answer: A [Photosynthesis]
Notes:
Photosynthesis in plants converts radiant energy from the sun into chemical energy in the form of glucose (sugar) using electrons and protons from water. Plants take in water, carbon dioxide, and sunlight and turn them into glucose and oxygen. Water (6H2O) + Carbon Dioxide (6CO2) + Sunlight (Radiant Energy) = Glucose (C6H12O6) + Oxygen (6O2).
