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MCQs

Total Questions : 52 | Page 3 of 6 pages
Question 21. Which of the following is the pre-requisites for co-metabolic transformation?
  1.    Coal
  2.    Oil
  3.    Natural gas
  4.    Co-factors
 Discuss Question
Answer: Option D. -> Co-factors
Answer: (d).Co-factors
Question 22. Which of the following is a term used for the amount of pollutant retained in the body of an organism?
  1.    Uptake
  2.    Retention
  3.    Dosage
  4.    Potassium
 Discuss Question
Answer: Option B. -> Retention
Answer: (b).Retention
Question 23. Which of the following substrate is not used by methanotrophic or methane producing bacteria to oxidize methane?
  1.    Methanol
  2.    Formaldehyde
  3.    Methane
  4.    Carbon dioxide
 Discuss Question
Answer: Option D. -> Carbon dioxide
Answer: (d).Carbon dioxide
Question 24. Which of the following can be a major source for eutrophication of surface water?
  1.    Nitrogen
  2.    Calcium
  3.    Magnesium
  4.    Potassium
 Discuss Question
Answer: Option A. -> Nitrogen
Answer: (a).Nitrogen
Question 25. Anaerobic bacteria can overcome the high persistence of halogenated xenobiotic compounds.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 26. Which of the following compound can help degrade amino nitrogen and heterocyclic nitrogen by biological method?
  1.    Ammonia
  2.    Nitrate
  3.    Sulphate
  4.    Carbon dioxide
 Discuss Question
Answer: Option A. -> Ammonia
Answer: (a).Ammonia
Question 27. Autotrophic retention of nitrogen compounds leads to formation of nitrate by conversion of ammonia.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option A. -> True
Answer: (a).True
Question 28. Which of the following is not an effect of retention or uptake of nitrogen and phosphorus in aquatic ecosystem?
  1.    Adverse health conditions
  2.    Algal blooms
  3.    Increase in water quality
  4.    Reduction in marine life
 Discuss Question
Answer: Option C. -> Increase in water quality
Answer: (c).Increase in water quality
Question 29. Removal of nitrogen cannot be done by which of the following process?
  1.    Desalination
  2.    Nitrification
  3.    Ammonification
  4.    Denitrification
 Discuss Question
Answer: Option A. -> Desalination
Answer: (a).Desalination
Question 30. Nitrifying bacteria doesn’t belong to which of the following genera?
  1.    Nitrosomonas
  2.    Nitrosococcus
  3.    Nitrosospira
  4.    Pseudomonas
 Discuss Question
Answer: Option D. -> Pseudomonas
Answer: (d).Pseudomonas

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