Environmental Engineering MCQ

Below Environmental Engineering quiz are Multiple Choice Questions (MCQs) type Quiz. These Environmental Engineering MCQ Questions helps you to refresh your Environmental Engineering, you can see the correct option by clicking on it. .
  • 1. Facultative bacteria are able to work in

    • Presence of oxygen only
    • Absence of oxygen only
    • Presence as well as in absence of oxygen
    • Presence of water
  • 2. The water carriage system of collection of waste product

    • Is cheaper in initial cost than dry conservancy system
    • Requires treatment before disposal
    • Creates hygienic problem
    • All of the above
  • 3. The self cleansing velocity for all sewers in India is usually

    • Less than 1.0 m/sec
    • 1.0 m/sec to 1.2 m/sec
    • 1.5 m/sec to 2.0 m/sec
    • 3.0 m/sec to 3.5 m/sec
  • 4. Most suitable section of sewer in separate sewage system is

    • Rectangular section
    • Circular section
    • Standard form of egg shaped sewer
    • Modified egg shaped section
  • 5. In water treatment, rapid gravity filters are adopted to remove

    • Dissolved organic substances
    • Dissolved solids and dissolved gases
    • Floating solids and dissolved inorganic solids
    • Bacteria and colloidal solids
  • 6. The length of rectangular sedimentation tank should not be more than(Where ‘B’ is the width of the tank)

    • B
    • 2B
    • 4B
    • 8B
  • 7. An egg shaped section of sewer

    • Is economical than circular section
    • Provides self cleansing velocity at low discharges
    • Is more stable than circular section
    • Is easy to construct
  • 8. Sewage treatment units are designed for

    • Maximum flow only
    • Minimum flow only
    • Average flow only
    • Maximum and minimum flow
  • 9. As compared to cast iron pipes, steel pipes are

    • Heavier
    • Stronger
    • Costlier
    • Less susceptible to corrosion
  • 10. As compared to rapid sand filters, slow sand filters give (i) Slower filtration rate (ii) Higher filtration rate (iii) Lesser efficiency in removal of bacteria (iv) Higher efficiency in removal of bacteria The correct answer is

    • (i) and (ii)
    • (ii) and (iii)
    • (i) and (iv)
    • (ii) and (iv)