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