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MCQs

Total Questions : 129 | Page 12 of 13 pages
Question 111. Dealkalization results in removal of all the ions from the wastewater.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 112. Solids are removed from the wastewater by which of the following unit operation?
  1.    Inter facial contact
  2.    Solid stabilization
  3.    Ion transfer
  4.    Solids transfer
 Discuss Question
Answer: Option D. -> Solids transfer
Answer: (d).Solids transfer
Question 113. Which form of solute stabilization occurs when effluent passes through limestone?
  1.    Chlorination
  2.    Liming
  3.    Re-carbonation
  4.    Super-chlorination
 Discuss Question
Answer: Option B. -> Liming
Answer: (b).Liming
Question 114. In which unit operation, gases are released or absorbed in the effluent?
  1.    Gas transfer
  2.    Ion transfer
  3.    Solute stabilization
  4.    Solids Transfer
 Discuss Question
Answer: Option A. -> Gas transfer
Answer: (a).Gas transfer
Question 115. When the BOD of wastewater increases, then?When The BOD Of Wastewater Increases, Then?
  1.    Rate of reaeration decreases
  2.    Rate of oxygen deficit increases
  3.    Rate of oxygen deficit decreases
  4.    Amount of oxygen in wastewater increases
 Discuss Question
Answer: Option B. -> Rate of oxygen deficit increases
Answer: (b).Rate of oxygen deficit increases
Question 116. The oxygen deficit is maximum when?The Oxygen Deficit Is Maximum When?
  1.    Rate of reaeration is 0
  2.    Rate of deoxygenation is 0
  3.    Rate of reaeration equals the rate of deoxygenation
  4.    Rate of reaeration > rate of deoxygenation
 Discuss Question
Answer: Option C. -> Rate of reaeration equals the rate of deoxygenation
Answer: (c).Rate of reaeration equals the rate of deoxygenation
Question 117. Which of the following represents the physical characteristics of water?Which Of The Following Represents The Physical Characteristi...
  1.    Chloride content
  2.    BOD
  3.    Turbidity
  4.    COD
 Discuss Question
Answer: Option C. -> Turbidity
Answer: (c).Turbidity
Question 118. Rate of aeration is independent of the D.O content of wastewater.Rate Of Aeration Is Independent Of The D.O Content Of Wastew...
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't Say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 119. Which of the following is measured in mg/L?Which Of The Following Is Measured In Mg/L?
  1.    Unit weight
  2.    Coefficient of cohesion
  3.    Discharge
  4.    Turbidity
 Discuss Question
Answer: Option D. -> Turbidity
Answer: (d).Turbidity
Question 120. In India, the average temperature of sewage is __________
  1.    10°C
  2.    20°C
  3.    40°C
  4.    80°C
 Discuss Question
Answer: Option B. -> 20°C
Answer: (b).20°C

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