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This set of Water and Wastewater Engineering Multiple Choice Questions & Answers (MCQs) focuses on Water And Wastewater Engineering Set 12
Q1 | Manholes along the mains from the source to a city are provided at 500 m intervals in
- Steel pipes
- R.C.C. pipes
- Hume steel pipes
- All the above
Q2 | The maximum permissible colour for domestic supplies based on cobalt scale, is
- 5 ppm
- 10 ppm
- 15 ppm
- 20 ppm
Q3 | Increase in population of a rapidly growing city, may be estimated by
- Arithmetical mean method
- Geometrical method
- Incremental increase method
- Graphical comparison method
Q4 | Per capita demand of water is calculated in litres
- Per person per day
- Per person per month
- Per person per year
- None of these
Q5 | Hard water for public water supply is discarded because
- ) It consumes more soap
- It contains lot of turbidity
- It contains pathogenic bacterias
- It possesses bad taste and odour
Q6 | Pick up the incorrect statement from the following:
- Iron salts produce heavy flocks and hence remove more suspended matter
- Iron salts remove hydrogen sulphides
- Iron salts can be used over a limited range of pH values
- Iron salts impart corrosiveness to water
Q7 | Asbestos pipes are
- Light in weight and easy to transport
- Highly resistant to corrosion
- High flexible to accommodate deflection upto 12°
- All the above
Q8 | A strainer type well sunk through three previous layers intervened by three imperviousaquicludes, draws water from
- Top most pervious layer
- Central pervious layer
- Lowest pervious layer
- All the pervious layers
Q9 | Runoff is the quantity of water which flows
- In sewer pipes
- Due to leakage in pipes
- In rivers
- None of these