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Civil Engineering Mcqs

The gas from sludge digestion tank is mainly composed of __________________?

  • (A)  nitrogen
  • (B)  carbon dioxide
  • (C)  hydrogen sulphide
  • (D)  methane
Submitted By :Ali Uppal

Settling velocity increases with_______________?

  • (A)  specific gravity of solid particles
  • (B)  size of particles
  • (C)  depth of tank
  • (D)  temperature of liquid
Submitted By :Ali Uppal

Submitted By :Ali Uppal

Submitted By :Ali Uppal

Submitted By :Ali Uppal

Dissolved oxygen in streams is______________?

  • (A)  maximum at noon
  • (B)  minimum at noon
  • (C)  maximum at midnight
  • (D)  same throughout the day
Submitted By :Ali Uppal

The means of access for inspection and cleaning of sewer line is known as_______________?

  • (A)  inlet
  • (B)  manhole
  • (C)  drop manhole
  • (D)  catch basin
Submitted By :Ali Uppal

Sewage treatment units are designed for_______________?

  • (A)  maximum flow only
  • (B)  minimum flow only
  • (C)  average flow only
  • (D)  maximum and minimum flow
Submitted By :Ali Uppal

Corrosion in concrete sewers is caused by______________?

  • (A)  septic conditions
  • (B)  dissolved oxygen
  • (C)  chlorine
  • (D)  nitrogen
Submitted By :Ali Uppal

Generally the detention period for grit chambers is kept as_______________?

  • (A)  1 minute
  • (B)  5 minutes
  • (C)  2-4 hours
  • (D)  12 hours
Submitted By :Ali Uppal

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