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Total Questions : 1556 | Page 17 of 156 pages
Question 161. For design purposes, the normal rate of infiltration of ground water into the sewer, is
  1.    500 litres/km/cm
  2.    1000 litres/km/cm
  3.    1500 litres/km/cm
  4.    2000 litres/km/cm
 Discuss Question
Answer: Option D. -> 2000 litres/km/cm
Question 162. If the peak discharge of a storm water drain (S.W. Drain) is expected to exceed 150 cumecs, the free board to be provided, is
  1.    100 cm
  2.    90 cm
  3.    80 cm
  4.    50 cm
 Discuss Question
Answer: Option A. -> 100 cm
Question 163. In 1000 kg of sewage, the total solids approximate
  1.    0.5 to 1.0 kg
  2.    1 kg to 2.0 kg
  3.    5 kg to 7.5 kg
  4.    7.5 kg to 10 kg
 Discuss Question
Answer: Option A. -> 0.5 to 1.0 kg
Question 164. Pick up the incorrect statement from the following:
  1.    The process of decomposing the organic matter under controlled anaerobic conditions, is called sludge digestion
  2.    Sludge digestion is carried out in sludge tank
  3.    The gases produced in sludge digestion process, contain 75% carbon dioxide
  4.    The gases produced in sludge digestion process, contain 75% methane
 Discuss Question
Answer: Option C. -> The gases produced in sludge digestion process, contain 75% carbon dioxide
Question 165. Pick up the correct statement from the following:
  1.    Turbidity is more in strong sewage
  2.    The black colour indicates septic sewage
  3.    The sewage omits offensive odours after four hours
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
Question 166. For design purposes, the normal rate of infiltration of ground water into the sewer, is
  1.    500 litres/km/cm
  2.    1000 litres/km/cm
  3.    1500 litres/km/cm
  4.    2000 litres/km/cm
 Discuss Question
Answer: Option D. -> 2000 litres/km/cm
Question 167. If the peak discharge of a storm water drain (S.W. Drain) is expected to exceed 150 cumecs, the free board to be provided, is
  1.    100 cm
  2.    90 cm
  3.    80 cm
  4.    50 cm
 Discuss Question
Answer: Option A. -> 100 cm
Question 168. In 1000 kg of sewage, the total solids approximate
  1.    0.5 to 1.0 kg
  2.    1 kg to 2.0 kg
  3.    5 kg to 7.5 kg
  4.    7.5 kg to 10 kg
 Discuss Question
Answer: Option A. -> 0.5 to 1.0 kg
Question 169. Pick up the incorrect statement from the following:
  1.    The process of decomposing the organic matter under controlled anaerobic conditions, is called sludge digestion
  2.    Sludge digestion is carried out in sludge tank
  3.    The gases produced in sludge digestion process, contain 75% carbon dioxide
  4.    The gases produced in sludge digestion process, contain 75% methane
 Discuss Question
Answer: Option C. -> The gases produced in sludge digestion process, contain 75% carbon dioxide
Question 170. Pick up the correct statement from the following:
  1.    Turbidity is more in strong sewage
  2.    The black colour indicates septic sewage
  3.    The sewage omits offensive odours after four hours
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above

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