NEET Environmental Issues Important Questions
NEET Environmental Issues Important Questions
NEET Environmental Issues Important Questions
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6. Which one of the following statements is incorrect
regarding Bhopal gas tragedy?
(A) Methyl isocyanate gas leakage took place.
(B) Thousands of human beings died.
(C) Radioactive fallout engulfed Bhopal.
(D) It took place in the night of December 2/3, 1984.
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11. Generally speaking, the atmosphere in big cities is polluted
most by
(A) radioactive fall out
(B) household waste
(C) automobile exhausts
(D) pesticide residues
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17. Which of the following ecosystem has maximum
productivity?
(A) Grassland (B) Estuary
(C) Tundra forest (D) Pine forest
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23. Those species which contribute to the properties of
ecosystem are
(A) allopatric species (B) sympatric species
(C) key stone species (D) sibling species
26. Guano is a fertilizer obtained from sea birds along the coast
of Chile and Peru. It is rich is
(A) nitrogen (B) phosphorus
(C) potassium (D) sodium
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29. Which of the following pollutant is different from others
with respect to its life in the ecosystem?
(A) Sewage (B) DDT
(C) PCB (D) Mercury
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40. Which of the following does not occur when sewage is
discharged into water?
(A) Increase in O2 (B) Cyanophycean blooms
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(D) It involves cutting down of trees of the forest, burning
of the plant remains and then using the land for farming.
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ANSWERS
1. (B) 2. (D) 3. (D) 4. (A) 5. (B) 6. (C)
7. (B) 8. (D) 9. (B) 10. (B) 11. (C) 12. (A)
13. (B) 14. (C) 15. (A) 16. (B) 17. (B) 18. (B)
19. (A) 20. (A) 21. (B) 22. (C) 23. (C) 24. (C)
25. (A) 26. (B) 27. (D) 28. (D) 29. (A) 30. (B)
31. (D) 32. (B) 33. (C) 34. (B) 35. (A) 36. (A)
37. (D) 38. (A) 39. (D) 40. (A) 41. (B) 42. (B)
43. (A) 44. (B) 45. (C)
SOLUTIONS
1. Pollens are present in air. Excess of pollen are produced in
certain seasons which causes allergic reactions in several
human beings. The common allergic reactions are asthma,
bronchitis and rhinitis.
2. Escherichia coli is a number of the colifiorm group and is
used for the analysis of water faced for faecal
contamination.
3. The sources of phosphate pollution are sewage treatment
plants, animal feed lots, phosphate fertilizers used in
agricultural fields, etc.
6. Bhopal gas tragedy the World’s worst industrial
catastrophes was not due to radioactive fallout, but it was
because of leakage of phosgene and methyl isocyanate gas.
7. Peroxyacyl nitrate (PAN) is produced due to reaction
between Nos and hydrocarbons under effect of UV-
radiation of sunlight.
8. Hiroshima day is on August 6, 1945, when an atomic bomb
was dropped on the Japanese City Hiroshima.
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43. Excess fluoride in drinking water causes teeth deformity.
44. In Jhum cultivation crops are cultivated for 2-3 years
without manuring. It results in nutrient depletion, reduced
moisture retention of soil and increased soil erosion.
45. Montreal Protocol, is an international treaty, signed at
Montreal in 1987 to control the emission of ozone
depleting substances.
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