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MCQs

Total Questions : 1556 | Page 12 of 156 pages
Question 111. In SI units the power of sound is represented in
  1.    Kgs
  2.    Joules
  3.    Newtons
  4.    Watts
 Discuss Question
Answer: Option D. -> Watts
Question 112. The settlement of a particle in sedimentation tank, is affected by
  1.    Velocity of flow
  2.    Viscosity of water
  3.    Size and shape of solid
  4.    All the above
 Discuss Question
Answer: Option D. -> All the above
Question 113. Disposal to sewage in large cities, is done in
  1.    Irrigation
  2.    Dilution
  3.    Oxidation
  4.    Purification
 Discuss Question
Answer: Option B. -> Dilution
Question 114. Skimming tanks are
  1.    Used to remove the grease and oil
  2.    Those from which sludge is skimmed out
  3.    Tanks provided with self- cleansing screens
  4.    Improved version of grit chambers
 Discuss Question
Answer: Option A. -> Used to remove the grease and oil
Question 115. A well oxidized sewage contains nitrogen mainly as
  1.    Nitrates
  2.    Nitrites
  3.    Free ammonia
  4.    None of these
 Discuss Question
Answer: Option A. -> Nitrates
Question 116. ‘Cowl’ is provided at
  1.    Lower end of ventilating column
  2.    Upper end of ventilating column
  3.    Upper end of the manhole
  4.    First step in manhole
 Discuss Question
Answer: Option B. -> Upper end of ventilating column
Question 117. The formula V = (1/n) r2/3
  1.    Chezy’s formula
  2.    Bazin’s formula
  3.    Kutter’s formula
  4.    Manning’s formula
 Discuss Question
Answer: Option D. -> Manning’s formula
Question 118. A drop manhole is provided if
  1.    A sewer drops from a height
  2.    A branch sewer joins the main sewer at higher level
  3.    A lamp is inserted to check obstruction
  4.    None of these
 Discuss Question
Answer: Option B. -> A branch sewer joins the main sewer at higher level
Question 119. The most widely used pump for lifting sewage is
  1.    Centrifugal pump
  2.    Reciprocating pump
  3.    Pneumatic ejector
  4.    Air pressure pump
 Discuss Question
Answer: Option A. -> Centrifugal pump
Question 120. The non-clog pump which permits solid matter to pass out with the liquid sewage, is
  1.    Centrifugal pump
  2.    Reciprocating pump
  3.    Pneumatic ejector
  4.    None of these
 Discuss Question
Answer: Option A. -> Centrifugal pump

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