Water And Wastewater Engineering Set 12 MCQs

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