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Civil Engineering Mcqs

Drop manholes at the junctions of sewer lines, are provided if________________?

  • (A)  Invert level of a branch sewer is more than 60 cm that of the main sewer
  • (B)  Sewer line runs along a main road
  • (C)  Ordinary manhole cannot be built
  • (D)  Two sewer lines intersect
Submitted By :Ali Uppal


During purification process of sewage the gas given off, is________________?

  • (A)  Carbon dioxide
  • (B)  Hydrogen
  • (C)  Ammonia
  • (D)  All the above
Submitted By :Ali Uppal


The sewerage system originates from__________________?

  • (A)  House sewers
  • (B)  Lateral sewers
  • (C)  Branch sewers
  • (D)  Main sewers
Submitted By :Ali Uppal


In septic tanks, decomposition of organic bacteria, is done by_____________________?

  • (A)  Anaerobic bacteria
  • (B)  Aerobic bacteria
  • (C)  Both types of bacterias
  • (D)  None of these
Submitted By :Ali Uppal


The sewage is pumped up_______________?

  • (A)  From low lying areas
  • (B)  From flat areas
  • (C)  From basements
  • (D)  All the above
Submitted By :Ali Uppal


Which one of the following tests is used for testing sewer pipes ?

  • (A)  Water test
  • (B)  Ball test
  • (C)  Mirror test
  • (D)  All of these
Submitted By :Ali Uppal


The non-clog pump which permits solid matter to pass out with the liquid sewage, is________________?

  • (A)  Centrifugal pump
  • (B)  Reciprocating pump
  • (C)  Pneumatic ejector
  • (D)  None of these
Submitted By :Ali Uppal


When drainage to sewage ratio is 20, the peak dry weather flow is_______________?

  • (A)  20% of the design discharge
  • (B)  Slightly less than 5% of the design discharge
  • (C)  Slightly more than 5% of the design discharge
  • (D)  None of these
Submitted By :Ali Uppal


Flocculated particles do not change their___________________?

  • (A)  Size
  • (B)  Shape
  • (C)  Weight
  • (D)  None of these
Submitted By :Ali Uppal


For providing an Indian type W.C., the R.C.C. slabs in the toilet portion__________________?

  • (A)  Should be sunk by 20 cm
  • (B)  Should be kept 20 cm above the adjacent portion
  • (C)  Should be sunk by 50 cm
  • (D)  Need not be sunk
Submitted By :Ali Uppal