Environmental Issue [50+] NEET MCQs- PYQ

Environmental Issue NEET MCQs With Answers

The students who are targeting for NEET exam should prepare for all the important chapters of NEET syllabus to secure good marks in NEET 2022. Candidates planning to appear in the medical exam must have knowledge about the weightage of chapters. Biology section carries the maximum weightage.

Environmental Issue is the ninth chapter categorized under the unit 'Ecology'. According to the NEET chapter wise weightage Environmental Issue contributes to around 3% of the total number of questions asked in the last years. On average we can expect 3-4 questions from this particular chapter.

Here you will find all previous year Environmental Issue NEET MCQs. Solving previous years Environmental Issue NEET MCQs will be beneficial for you. Firstly you get an idea of what type of questions are asked in previous year.

Every year around many of questions of biology are repeated as it is without even changing single word. These previous year Environmental Issue NEET MCQs will definitely guide you in what direction you need extra push.

Environmental Issue NEET MCQs And Answers

1. Which one of the following statements is not valid for aerosols? (NEET 2017)

(a) They alter rainfall and monsoon patterns.
(b) They cause increased agricultural productivity.
(c) They have negative impact on agricultural land.
(d) They are harmful to human health.

Solution: B

2. Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receiving effluents from: (NEET II 2016)

(a) domestic sewage
(b) dairy industry
(c) petroleum industry
(d) sugar industry

Solution: C

3. A lake which is rich in organic waste may result in: (NEET II 2016)

(a) increased population of aquatic organisms due to minerals
(b) drying of the lake due to algal bloom
(c) increased population of fish due to lots of nutrients
(d) mortality of fish due to lack of oxygen

Solution: D

4. The highest DDT concentration in aquatic food chain shall occur in: (NEETII 2016)

(a) phytoplankton

(b) seagull

(d) eel

Solution: B

5. Depletion of which gas in the atmosphere can lead to an increased incidence of skin cancers: (NEET I 2016)

(a) Ammonia

(b) Methane

(d) Ozone

Solution: D

6. Joint Forest Management Concept was introduced in India during: (NEET I 2016)

(a) 1980s

(b) 1990s

(d) 1970s

Solution: A

7. A river with an inflow of domestic sewage rich in organic waste may result in: (NEET I 2016)

(a) an increased production of fish due to biodegradable nutrients
(b) death of fish due to lack of oxygen
(c) drying of the river very soon due to algal bloom
(d) increased population of aquatic food web organisms

Solution: B

8. Acid rain is caused by increase in the atmospheric concentration of: (2015)

(a) CO 2 and CO

(b) O 3 and dust

(d) SO 3 and CO

Solution: C

9. Eutrophication of water bodies leading to killing of fishes is mainly due to non availability of: (2015)

(a) essential minerals

(b) oxygen

(d) light

Solution: B

10. The UN Conference of Parties on climate change in the year 2012 was held at: (2015)

(a) Lima

(b) Warsaw

(d) Doha

Solution: D

11. Which of the following are most suitable indicators of SO 2 pollution in the environment? (2015)

(a) Algae

(b) Fungi

(d) Conifers

Solution: C

12. Increase in concentration of the toxicant at successive trophic levels is known as: (2015)

(a) biotransformation
(b) biogeochemical cycling
(c) biomagnification
(d) biodeterioration

Solution: C

13. The UN Conference of Parties on climate change in the year 2011 was held in: (2015 Cancelled)

(a) Peru

(b) Qatar

(d) South Africa

Solution: D

14. Which of the following is not one of the prime health risks associated with greater UV radiations through the atmosphere due to depletion of stratospheric ozone? (2015 Cancelled)

(a) Damage to eyes
(b) Increased liver cancer
(c) Increased skin cancer
(d) Reduced Immune System

Solution: B

15. High value of BOD (Biochemical Oxygen Demand) indicates that: (2015 Cancelled)

(a) water is less polluted
(b) consumption of organic matter in the water is higher by the microbes
(c) water is pure
(d) water is highly polluted

Solution: B,D

16. Rachel Carson’s famous book “Silent Spring” is related to: (2015 Cancelled)

(a) population explosion
(b) ecosystem management
(c) pesticide pollution
(d) noise pollution

Solution: C

17. A location with luxuriant growth of lichens on the trees indicates that the: (2014)

(a) trees are very healthy
(b) trees are heavily infested
(c) location is highly polluted
(d) location is not polluted

Solution: D

18. The zone of atmosphere in which the ozone layer is present is called: (2014)

(a) ionosphere

(b) mesosphere

(d) troposphere

Solution: C

19. A scrubber in the exhaust of a chemical industrial plant removes: (2014)

(a) gases like sulphur dioxide
(b) particulate matter of the size 5 micrometer or above
(c) gases like ozone and methane
(d) particulate matter of the size 2.5 micrometer or less

Solution: A

20. Kyoto protocol was endorsed at: (NEET 2013)

(a) CoP 6

(b) CoP 4

(d) CoP 5

Solution: C

21. Global warming can be controlled by: (NEET 2013)

(a) increasing deforestation, slowing down the growth of human population
(b) increasing deforestation, reducing efficiency of energy usage
(c) reducing deforestation, cutting down use of fossil fuel
(d) reducing reforestation, increasing the use of fossil fuel

Solution: C

22. The Air Prevention and Control of Pollution Act came into force in: (NEET 2013)

(a) 1985

(b) 1990

(d) 1981

Solution: D

23. The second commitment period for Kyoto Protocol was decided at: (Karnataka NEET 2013)

(a) Durban

(b) Bali

(d) Cancun

Solution: C

24. Climate of the world is threatened by: (Karnataka NEET 2013)

(a) decreasing amount of atmospheric oxygen
(b) increasing amount of atmospheric carbon dioxide
(c) decreasing amount of atmospheric carbon dioxide
(d) increasing concentration of atmospheric oxygen

Solution: B

25. Which one of the following is not correct with regard to the harmful effects of particulate matter of the size 2.5 micrometer or less? (Karnataka NEET 2013)

(a) It can cause respiratory problems.
(b) It can directly enter into our circulatory system.
(c) It can cause inflammation and damage to the lungs.
(d) It can be inhaled into the lungs.

Solution: B

26. In an area where DDT had been used extensively, the population of birds declined significantly because: (2012)

(a) birds stopped laying eggs
(b) earthworms in the area got eradicated
(c) cobras were feeding exclusively on birds
(d) many of the birds eggs laid, did not hatch.

Solution: D

27. Which one of the following is a wrong statement? (2012)

(a) Most of the forests have been lost in tropical areas.
(b) Ozone in upper part of atmosphere is harmful to animals.
(c) Greenhouse effect is a natural phenomenon.
(d) Eutrophication is a natural phenomenon in freshwater bodies.

Solution: B

28. Measuring Biochemical Oxygen Demand (BOD) is a method used for: (2012)

(a) estimating the amount of organic matter in sewage water
(b) working out the efficiency of oil driven automobile engines
(c) measuring the activity of Saccharomyces cerevisiae in producing curd on a commercial scale
(d) working out the efficiency of RBCs about their capacity to carry oxygen

Solution: A

29. Eutrophication is often seen in: (2011)

(a) deserts

(b) fresh water lakes

(d) mountains

Solution: B

(30) Which one of the following pairs of gases are the major cause of “greenhouse effect”? (2011)

(a) CO 2 and O 3

(b) CO 2 and CO

(d) CO 2 and N 2 O

Solution: D

31. Which one of the following statements is incorrect in case of Bhopal tragedy? (2011)

(a) Methyl isocyanate gas leakage took place.
(b) Thousands of human beings died.
(c) Radioactive fall out engulfed Bhopal.
(d) It took place in the night of December 2/3, 1984

Solution: C

32. Which one of the following is correct expanded form of the acronym? (2011)

(a) IPCC = International Panel for Climate Change
(b) UNEP = United Nations Environmental Policy
(c) EPA = Environmental Pollution Agency
(d) IUCN = International Union for Conservation of Nature and Natural Resources

Solution: D

33. “Good ozone” is found in the: (Mains 2011)

(a) mesosphere

(b) troposphere

(d) ionosphere

Solution: C

34. A renewable exhaustible natural resource is: (2010)

(a) coal

(b) petroleum

(d) forest

Solution: D

35. dB is a standard abbreviation used for the quantitative expression of: (2010)

(a) the density of bacteria in a medium
(b) a particular pollutant
(c) the dominant Bacillus in a culture
(d) a certain pesticide

Solution: B

36. The two gases making highest relative contribution to the greenhouse gases are: (2010)

(a) CO 2 and CH 4

(b) CH 4 and N 2 O

(d) CO 2 and N 2 O

Solution: A

37. When domestic sewage mixes with river water: (Mains 2010)

(a) small animals like rats will die after drinking river water
(b) the increased microbial activity releases micronutrients such as iron
(c) the increased microbial activity uses up dissolved oxygen
(d) the river water is still suitable for drinking as impurities are only about 0.1%

Solution: C

38. Global agreement in specific control strategies to reduce the release of ozone depleting substances, was adopted by: (2009)

(a) Montreal Protocol
(b) Kyoto Protocol
(c) Vienna Convention
(d) Rio de Janeiro Conference

Solution: A

39. Biochemical oxygen demand (BOD) in a river water: (2009)

(a) has no relationship with concentration of oxygen in the water
(b) gives a measure of Salmonella in the water
(c) increases when sewage gets mixed with river water
(d) remains unchanged when algal bloom occurs

Solution: C

40. Steps taken by the Government of India to control air pollution include: (2009)

(a) compulsory PUC (Pollution under control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbons
(b) permission to use only pure diesel with a maximum of 500 ppm sulphur as fuel for vehicles
(c) use of nonpolluting compressed natural gas (CNG) only as fuel by all buses and trucks
(d) compulsory mixing of 20% ethyl alcohol with petrol and 20% biodiesel with diesel

Solution: A

41. Montreal Protocol aims at: (2009)

(a) biodiversity conservation
(b) control of water pollution
(c) control of CO 2 emission
(d) reduction of ozone depleting substances

Solution: D

42. DDT residues are rapidly passed through food chain causing biomagnification because DDT is: (2009)

(a) moderately toxic
(b) nontoxic to aquatic animals
(c) water soluble
(d) lipo soluble

Solution: D

43. Chipko movement was launched for the protection of: (2009)

(a) forests

(b) livestock

(d) grasslands

Solution: A

44. A lake near a village suffered heavy mortality of fishes within a few days. Consider the following reasons for this. (2008)

A. Lots of urea and phosphate fertilizer were used in the crops in the vicinity.
B. The area was sprayed with DDT by an aircraft.
C. The lake water turned green and stinky.
D. Phytoplankton populations in the lake declined initially there by greatly reducing photosynthesis.

Which two of the above were the main causes of fish mortality in the lake?
(a) A, C

(b) A, B

(d) C, D

Solution: B

45. According to Central Pollution Control Board (CPCB), which particulate size in diameter (in micrometers) of the air pollutants is responsible for greatest harm to human health? (2008)

(a) 1.0 or less

(b) 5.2 2.5

(d) 1.5 or less

Solution: C

46. Which one of the following is the correct percentage of the two (out of the total of 4) green house gases that contribute to the total global warming? (2008)

(a) N 2 O 6%, CO 2 86%
(b) methane 20%, N 2 O 18%
(c) CFCs 14%, methane 20%
(d) CO 2 40%, CFCs 30%

Solution: C

47. In which one of the following the BOD (Biochemical Oxygen Demand) of sewage (S), distillery effluent (DE), paper mill effluent (PE) and sugar mill effluent (SE) have been arranged in ascending order? (2007)

(a) SE < PE < S < DE

(b) PE < S < SE < DE

(d) SE < S < PE < DE

Solution: B

48. In a coal fired power plant electrostatic precipitators are installed to control emission of: (2007)

(a) NO X

(b) SPM

(d) SO 2

Solution: B

49. Which one of the following statements is correct? (2007)

(a) Both Azotobacter and Rhizobium fix atmospheric nitrogen in root nodules of plants.
(b) Cyanobacteria such as Anabaena and Nostoc are important mobilizers of phosphates and for plant nutrition in soil.
(c) At present it is not possible to grow maize without chemical fertilizers.
(d) Extensive use of chemical fertilizers may lead to eutrophication of nearby water bodies

Solution: D

50. Which one of the following is not a bioindicator of water pollution? (2007)

(a) Bloodworms

(b) Stone flies

(d) Sludge-worms

Solution: B

51. Limit of BOD prescribed by Central Pollution Control Board for the discharge of industrial and municipal waste waters into natural surface waters, is: (2006)

(a) < 30 ppm

(b) < 3.0 ppm

(d) < 100 ppm

Solution: A

52. Photochemical smog pollution does not contain: (2006)

(a) PAN (peroxyacyl nitrate)
(b) ozone
(c) nitrogen dioxide
(d) carbon dioxide

Solution: D

53. Montreal protocol which calls for appropriate action to protect the ozone layer from human activities was passed in the year: (2006)

(a) 1985

(b) 1986

(d) 1988

Solution: C

In this article we have provided you important previous year Environmental Issue NEET MCQs. Solve the above all previous year Environmental Issue NEET MCQs .

To perform better in exam solve more Environmental Issue NEET MCQs.

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