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MCQs

Total Questions : 110 | Page 8 of 11 pages
Question 71. Which of the following has a vertical flow of waste in a reactor system?
  1.    Vertical reactor
  2.    Rotating drum
  3.    Horizontal reactor
  4.    Windrow composting
 Discuss Question
Answer: Option A. -> Vertical reactor
Answer: (a).Vertical reactor
Question 72. Which among the following is not a major reason for choosing earthworms for Vermicomposting?
  1.    Low incubation time
  2.    Digestion rate
  3.    Adaptability
  4.    Low growth rate
 Discuss Question
Answer: Option D. -> Low growth rate
Answer: (d).Low growth rate
Question 73. Which of the following methods uses earthworms during composting?
  1.    Vermicomposting
  2.    Vertical composting
  3.    Windrow composting
  4.    Burning
 Discuss Question
Answer: Option A. -> Vermicomposting
Answer: (a).Vermicomposting
Question 74. Which of the following is not a major objective of Vermicomposting?
  1.    To elevate the value of original material
  2.    To accelerate the rate of degradation
  3.    To obtain toxic products
  4.    To obtain products free of any pollutants
 Discuss Question
Answer: Option C. -> To obtain toxic products
Answer: (c).To obtain toxic products
Question 75. Which of the following species of earthworms is not suitable for Vermicomposting?
  1.    Epifilis
  2.    Endogens
  3.    Aneciques
  4.    Plasmodium
 Discuss Question
Answer: Option D. -> Plasmodium
Answer: (d).Plasmodium
Question 76. What is the major advantage of three-tire vermi-culture technology?
  1.    It can be applied to both solid and liquid wastes
  2.    It cannot be applied to both solid and liquid wastes
  3.    It involves chemical treatment
  4.    It can degrade organic wastes
 Discuss Question
Answer: Option A. -> It can be applied to both solid and liquid wastes
Answer: (a).It can be applied to both solid and liquid wastes
Question 77. Which of the following type of waste is best suited for anaerobic treatment of solid wastes?
  1.    Readily biodegradable compounds
  2.    Less moisture content
  3.    Less degradable
  4.    High temperature content
 Discuss Question
Answer: Option A. -> Readily biodegradable compounds
Answer: (a).Readily biodegradable compounds
Question 78. Which of the following is the most important product of anaerobic digestion?
  1.    Biogas
  2.    Acetic acid
  3.    Amino acid
  4.    Calcium
 Discuss Question
Answer: Option A. -> Biogas
Answer: (a).Biogas
Question 79. The technological potential of the biological wastes has been fully exhausted.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 80. Which of the following condition is not suited for anaerobic treatment of solid wastes?
  1.    Controlled temperature
  2.    Controlled moisture
  3.    Closed vessel
  4.    Open vessel
 Discuss Question
Answer: Option D. -> Open vessel
Answer: (d).Open vessel

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