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MCQs

Total Questions : 65 | Page 4 of 7 pages
Question 31. Which of the following is a method of adding natural microbes?
  1.    Bio augmentation
  2.    Bioremediation
  3.    Methane production
  4.    Pasteurization
 Discuss Question
Answer: Option A. -> Bio augmentation
Answer: (a).Bio augmentation
Question 32. Which of the following enzyme helps in methane oxidation?
  1.    Methanol
  2.    Formaldehyde
  3.    Methane mono oxygenase
  4.    Carbon dioxide
 Discuss Question
Answer: Option C. -> Methane mono oxygenase
Answer: (c).Methane mono oxygenase
Question 33. The high persistence of halogenated xenobiotic can be overcome by microalgae.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 34. Which of the following process is observed when microalgae growing on a particular substrate can oxidize a second substrate?
  1.    Co substrate
  2.    Sugar substrate
  3.    Potassium substrate
  4.    Calcium substrate
 Discuss Question
Answer: Option A. -> Co substrate
Answer: (a).Co substrate
Question 35. Which of the following factors doesn’t affect the rate of degradation by microalgae?
  1.    Association
  2.    Microbial diversity
  3.    Microbial density
  4.    Color
 Discuss Question
Answer: Option D. -> Color
Answer: (d).Color
Question 36. Arrange these soluble cations (Na, Ca, K, Mg) in ascending order of abundance of soluble cations found in saline water bodies.
  1.    Na > Mg > Ca > K
  2.    Mg > Na > Ca > K
  3.    K > Mg > Ca > Na
  4.    Na > Mg > K > Ca
 Discuss Question
Answer: Option A. -> Na > Mg > Ca > K
Answer: (a).Na > Mg > Ca > K
Question 37. Which of the following is a method for managing the excess algae in marine ecosystem?
  1.    Drainage
  2.    Harmful algal blooms
  3.    Bio-remediation
  4.    Bio-degradation
 Discuss Question
Answer: Option A. -> Drainage
Answer: (a).Drainage
Question 38. How does algae reaches the soil surface during dry season?
  1.    Capillary rise
  2.    Diffusion
  3.    Active transport
  4.    Passive transport
 Discuss Question
Answer: Option A. -> Capillary rise
Answer: (a).Capillary rise
Question 39. Which technique is not used to manage saline aquatic systems?
  1.    End-of-pipe
  2.    Subsurface drainage
  3.    Skimming well technology
  4.    Leaching
 Discuss Question
Answer: Option A. -> End-of-pipe
Answer: (a).End-of-pipe
Question 40. Which of the following is the process by which the saline water underlying freshwater rises upward into the freshwater zone?
  1.    Bio-remediation
  2.    Bio-degradation
  3.    Bio-magnification
  4.    Upconing
 Discuss Question
Answer: Option D. -> Upconing
Answer: (d).Upconing

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