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  • Question
  • Which of the following have been used to oxidize ammonia and to prevent algal growth?


  • Options
  • A. growth of hypomicrobium in presence of added methanol
  • B. Micrococcus denitrificans cells encapsulated in liquid membranes
  • C. Both (a) and (b)
  • D. Nitrosomonas europaen

  • Correct Answer
  • Nitrosomonas europaen 


  • Environmental Protection problems


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    • 1. Which of the following can be used for the removal of color from the effluents of pulp mill?

    • Options
    • A. Coriolus versicolor entrapped in calcium alginate beads
    • B. Phanerochaete chrysosporium
    • C. Both (a) and (b)
    • D. Nitrosomonas europaen
    • Discuss
    • 2. Which of the following is the most effective for the rice sheath blight pathogen, Pellicularia sasakii?

    • Options
    • A. Polyoxin D
    • B. Polyoxin B
    • C. Polyoxin L
    • D. Polyoxin C
    • Discuss
    • 3. Phenols degradation in waste water of hospitals, laboratories and coal processing to coke can be achieved by using

    • Options
    • A. fungus Aureobasidium pullulans adsorbed by the fibrous asbestos
    • B. cells of Pseudomonas spp. either adsorbed to anthracite coal or entrapped on alginate gel
    • C. both (a) and (b)
    • D. Phanerochaete chrysosporium
    • Discuss
    • 4. Streptomyces griseochromogenes is reported to show a potent curative effect against

    • Options
    • A. rice blast disease
    • B. yellow blight of maize
    • C. milo of soybean
    • D. eye spot of sugarcane
    • Discuss
    • 5. Which of the following accumulates from factory waste?

    • Options
    • A. Pseudomonas aeruginosa
    • B. Thiobacillus
    • C. Pseudomonas putida
    • D. Zoogloea ramigera
    • Discuss
    • 6. Which of the bacteria is considered for biological leaching?

    • Options
    • A. T. thiooxidans
    • B. T. ferrooxidans
    • C. Ferrobacillus terrooxidans
    • D. all of these
    • Discuss
    • 7. Milbemycin is known to exhibit a broad spectrum of activity against

    • Options
    • A. agricultural pests
    • B. agricultural herbs
    • C. agricultural insects
    • D. all of these
    • Discuss
    • 8. The heavily polluted zone of water reservoir is known as

    • Options
    • A. pleosaprophytic zone
    • B. mesosaprophytic zone
    • C. oligosaprophytic zone
    • D. none of these
    • Discuss
    • 9. Which of the following is known to control Colorado potato beetle?

    • Options
    • A. Beaveria bassiana
    • B. Metarhizium anisopliae
    • C. Verticillium lecauii
    • D. Nomuraea rileyi
    • Discuss
    • 10. Inundation involves use of a/an

    • Options
    • A. large number of organisms over a short time to suppress/destroy a population
    • B. organism over a short time to suppress/destroy a population
    • C. large number of organisms over a long time to suppress/destroy a population
    • D. organism over a long time to suppress/destroy a population
    • Discuss


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