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MCQs

Total Questions : 76 | Page 8 of 8 pages
Question 71. For the removal of phosphorous through Activated Sludge Process (ASP) what would be the Solid retention time considered?
  1.    18 hours
  2.    1-2 days
  3.    10 hrs
  4.    2-4 days
 Discuss Question
Answer: Option D. -> 2-4 days
Answer: (d).2-4 days
Question 72. Calculate the amount of air required for the equalization tank with the following details:
Flow: 500 m³/h
BOD load: 800 mg/L
  1.    950 m³/hr
  2.    800 m³/hr
  3.    2000 m³/hr
  4.    785 m³/hr
 Discuss Question
Answer: Option C. -> 2000 m³/hr
Answer: (c).2000 m³/hr
Question 73. Gravity thickening can achieve up to _____ solid fraction.
  1.    5%
  2.    10%
  3.    15%
  4.    20%
 Discuss Question
Answer: Option B. -> 10%
Answer: (b).10%
Question 74. ________ is oxidized by heterotypic micro-organisms.
  1.    Inorganic matter
  2.    Inert materials
  3.    Organic matter
  4.    Water
 Discuss Question
Answer: Option C. -> Organic matter
Answer: (c).Organic matter
Question 75. The measure of pH is the ______ ion concentration.
  1.    Iron
  2.    Hydrogen
  3.    Aluminium
  4.    Sodium
 Discuss Question
Answer: Option B. -> Hydrogen
Answer: (b).Hydrogen
Question 76. The Activated Sludge Process is a _______ wastewater treatment process.
  1.    Physical
  2.    Chemical
  3.    Biological
  4.    Biochemical
 Discuss Question
Answer: Option C. -> Biological
Answer: (c).Biological

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