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MCQs

Total Questions : 134 | Page 13 of 14 pages
Question 121. Which chemical is added to the oxidation pond to avoid bad odor?
  1.    Calcium chloride
  2.    Sodium nitrate
  3.    Potassium chloride
  4.    Silver nitrate
 Discuss Question
Answer: Option B. -> Sodium nitrate
Answer: (b).Sodium nitrate
Question 122. The concentration of biodegradable organic matter after the septic tank is ___________
  1.    50ppm
  2.    100ppm
  3.    200ppm
  4.    75ppm
 Discuss Question
Answer: Option C. -> 200ppm
Answer: (c).200ppm
Question 123. What is the maximum design flow of sewage in a septic tank?
  1.    70 liters per person per day
  2.    100 liters per person per day
  3.    30 liters per person per day
  4.    40 liters per person per day
 Discuss Question
Answer: Option A. -> 70 liters per person per day
Answer: (a).70 liters per person per day
Question 124. The detention period of a septic tank is ___________
  1.    2 hours
  2.    12-36 hours
  3.    4 hours
  4.    1 week
 Discuss Question
Answer: Option B. -> 12-36 hours
Answer: (b).12-36 hours
Question 125. Which of the following is not the land filling method?
  1.    Bangalore method
  2.    Area method
  3.    Depression method
  4.    Trench method
 Discuss Question
Answer: Option A. -> Bangalore method
Answer: (a).Bangalore method
Question 126. Which of the following waste can be decomposed by bacteria?
  1.    Radioactive substance
  2.    Ashes
  3.    Food waste
  4.    Rubbish
 Discuss Question
Answer: Option C. -> Food waste
Answer: (c).Food waste
Question 127. ______ is a liquid that passes through solid waste and extracts suspended impurities from it.
  1.    Leachate
  2.    Sludge
  3.    Distilled water
  4.    Municipal waste
 Discuss Question
Answer: Option A. -> Leachate
Answer: (a).Leachate
Question 128. Which of the following is not the municipal solid waste?
  1.    Radioactive substance
  2.    Ashes
  3.    Food waste
  4.    Rubbish
 Discuss Question
Answer: Option A. -> Radioactive substance
Answer: (a).Radioactive substance
Question 129. ______ is the cutting and tearing of municipal solid waste.
  1.    Land fills
  2.    Shredding
  3.    Pulverization
  4.    Composting
 Discuss Question
Answer: Option B. -> Shredding
Answer: (b).Shredding
Question 130. _________ is the crushing and grinding of municipal solid waste.
  1.    Land fills
  2.    Shredding
  3.    Pulverization
  4.    Composting
 Discuss Question
Answer: Option C. -> Pulverization
Answer: (c).Pulverization

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