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MCQs

Total Questions : 30 | Page 3 of 3 pages
Question 21. Which of the following is a bio-indicator of metal pollution?
  1.    Mytilus edulis
  2.    E.coli
  3.    Lichens
  4.    Microalage
 Discuss Question
Answer: Option A. -> Mytilus edulis
Answer: (a).Mytilus edulis
Question 22. The process by which the methanogens produce methane is called _______
  1.    Bio-methanation
  2.    Bio-luminescence
  3.    Bio-leaching
  4.    Bio-fortification
 Discuss Question
Answer: Option A. -> Bio-methanation
Answer: (a).Bio-methanation
Question 23. Which of the following bacteria can generate electricity, thereby reducing the environmental toxic pollutants?
  1.    Thermus aquaticus
  2.    Bacillus thuringenesis
  3.    Shewanella
  4.    Mycobacterium tuberculosis
 Discuss Question
Answer: Option C. -> Shewanella
Answer: (c).Shewanella
Question 24. Which of the following doesn’t include the activity of microorganisms?
  1.    Bio-magnification
  2.    Bio-remediation
  3.    Bio-degradation
  4.    Bio-leaching
 Discuss Question
Answer: Option A. -> Bio-magnification
Answer: (a).Bio-magnification
Question 25. Calculate the BOD value for the sample below including the minimum depletion and residual requirements.
Sample (ml)-100ml in 300ml bottle
Initial D.O (mg/ml): 9.2
5-days D.O (mg/ml): 5.3
  1.    9.1
  2.    9.75
  3.    11
  4.    9
 Discuss Question
Answer: Option B. -> 9.75
Answer: (b).9.75
Question 26. Which of the following method of disposal of solid waste leads to release of organic pollutants into the environment?
  1.    Land filling
  2.    Incineration
  3.    Phytoremediation
  4.    Biological treatment
 Discuss Question
Answer: Option B. -> Incineration
Answer: (b).Incineration
Question 27. Water logging and weed infestation can be classified under which type of issue?
  1.    National
  2.    Regional
  3.    Municipal
  4.    International
 Discuss Question
Answer: Option B. -> Regional
Answer: (b).Regional
Question 28. Which of the following is not a reason behind air pollution?
  1.    Industrialization
  2.    Vehicular exhaustion
  3.    Deforestation
  4.    Afforestation
 Discuss Question
Answer: Option D. -> Afforestation
Answer: (d).Afforestation
Question 29. Increasing thermal stress contributes to coral bleaching.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 30. Oxides of nitrogen and Sulphur leads to major air pollution.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True

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