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MCQs

Total Questions : 828 | Page 3 of 83 pages
Question 21. The phenolic compounds in public water supply should not be more than
  1.    0.1 ppm
  2.    0.01 ppm
  3.    0.001 ppm
  4.    0.0001 ppm
 Discuss Question
Answer: Option C. -> 0.001 ppm
Question 22. The means of access for inspection and cleaning of sewer line is known as
  1.    Inlet
  2.    Manhole
  3.    Drop manhole
  4.    Catch basin
 Discuss Question
Answer: Option B. -> Manhole
Question 23. The water carriage system of collection of waste product
  1.    Is cheaper in initial cost than dry conservancy system
  2.    Requires treatment before disposal
  3.    Creates hygienic problem
  4.    All of the above
 Discuss Question
Answer: Option B. -> Requires treatment before disposal
Question 24. In chlorination, with the rise in temperature of water, death rate of bacteria
  1.    Increases
  2.    Decreases
  3.    Remains unaffected
  4.    None of the above
 Discuss Question
Answer: Option A. -> Increases
Question 25. The characteristics of fresh and septic sewage respectively are
  1.    Acidic and alkaline
  2.    Alkaline and acidic
  3.    Both acidic
  4.    Both alkaline
 Discuss Question
Answer: Option B. -> Alkaline and acidic
Question 26. An egg shaped section of sewer
  1.    Is economical than circular section
  2.    Provides self cleansing velocity at low discharges
  3.    Is more stable than circular section
  4.    Is easy to construct
 Discuss Question
Answer: Option B. -> Provides self cleansing velocity at low discharges
Question 27. Most suitable section of sewer in separate sewage system is
  1.    Rectangular section
  2.    Circular section
  3.    Standard form of egg shaped sewer
  4.    Modified egg shaped section
 Discuss Question
Answer: Option B. -> Circular section
Question 28. A sewer that receives the discharge of a number of house sewers is called
  1.    House sewer
  2.    Lateral sewer
  3.    Intercepting sewer
  4.    Sub-main sewer
 Discuss Question
Answer: Option B. -> Lateral sewer
Question 29. Standard EDTA (ethylene diamine tetra acetic acid) solution is used to determine the
  1.    Hardness in water
  2.    Turbidity in water
  3.    Dissolved oxygen in water
  4.    Residual chlorine in water
 Discuss Question
Answer: Option A. -> Hardness in water
Question 30. The hourly variation factor is usually taken as
  1.    1.5
  2.    1.8
  3.    2.0
  4.    2.7
 Discuss Question
Answer: Option A. -> 1.5

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