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MCQs

Total Questions : 64 | Page 5 of 7 pages
Question 41. Phenols degradation in waste water of hospitals, laboratories and coal processing to coke can be achieved by using
  1.    Phanerochaete chrysosporium
  2.    cells of Pseudomonas spp. either adsorbed to anthracite coal or entrapped on alginate gel
  3.    both (a) and (b)
  4.    fungus Aureobasidium pullulans adsorbed by the fibrous asbestos
 Discuss Question
Answer: Option C. -> both (a) and (b)
Question 42. Which of the following is the most effective for the rice sheath blight pathogen, Pellicularia sasakii?
  1.    Polyoxin L
  2.    Polyoxin D
  3.    Polyoxin B
  4.    Polyoxin C
 Discuss Question
Answer: Option B. -> Polyoxin D
Question 43. Which of the following can be used for the removal of color from the effluents of pulp mill?
  1.    Nitrosomonas europaen
  2.    Phanerochaete chrysosporium
  3.    Coriolus versicolor entrapped in calcium alginate beads
  4.    Both (a) and (b)
 Discuss Question
Answer: Option D. -> Both (a) and (b)
Question 44. Which of the following have been used to oxidize ammonia and to prevent algal growth?
  1.    growth of hypomicrobium in presence of added methanol
  2.    Nitrosomonas europaen
  3.    Micrococcus denitrificans cells encapsulated in liquid membranes
  4.    Both (a) and (b)
 Discuss Question
Answer: Option B. -> Nitrosomonas europaen
Question 45.  Which of the following microorganisms leach metals out of rock ores and can accumulate silver?
  1.    Pseudomonas aeruginosa
  2.    Thiobacillus
  3.    Pseudomonas putida
  4.    Zoogloea ramigera
 Discuss Question
Answer: Option B. -> Thiobacillus
Question 46.  Streptomyces griseochromogenes is reported to show a potent curative effect against
  1.    rice blast disease
  2.    yellow blight of maize
  3.    milo of soybean
  4.    eye spot of sugarcane
 Discuss Question
Answer: Option A. -> rice blast disease
Question 47.  Which of the bacteria is considered for biological leaching?
  1.    T. thiooxidans
  2.    T. ferrooxidans
  3.    Ferrobacillus terrooxidans
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Question 48.  The heavily polluted zone of water reservoir is known as
  1.    pleosaprophytic zone
  2.    mesosaprophytic zone
  3.    oligosaprophytic zone
  4.    none of these
 Discuss Question
Answer: Option A. -> pleosaprophytic zone
Question 49.  The rate of degradation and microbes resistance to toxic pollutants remain better when the
  1.    mixed cell population is used
  2.    individual cell is used
  3.    mixed cell population along with metals is used
  4.    individual cell along with metal is used
 Discuss Question
Answer: Option A. -> mixed cell population is used
Question 50.  Inundation involves use of a/an
  1.    large number of organisms over a short time to suppress/destroy a population
  2.    organism over a short time to suppress/destroy a population
  3.    large number of organisms over a long time to suppress/destroy a population
  4.    organism over a long time to suppress/destroy a population
 Discuss Question
Answer: Option A. -> large number of organisms over a short time to suppress/destroy a population

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