Water Supply Engineering 2

Which of the following is NOT one of the categories for water quality measurement?

• Geological characteristics

• Physical characteristics

• Chemical characteristics

• Microbiological characteristics

In a lab, an unknown substance can be identified through various physical properties, except ___________.

• odour

• pH

• turbidity

• colour

Select the best method for predicting the growth of a city's population

• Arithematic mean method

• Geometric mean method

• Increamental increase method

• Logistic curve method

The most important and widely used tube well in India, is

• strainer well

• cavity well

• slotted well

• perforated pipe well

When gravity and pumping systems of water distribution are adopted, the type of distribution reservoir, is

• elevated tank

• ground source reservoir

• intz tank

• Stand pipe

The strainer type tube well, is unsuitable for

• coarse gravels

• fine sandy strata

• clean gravels

• none of these.

One of the main drawbacks of using hard water is

• increased soap usage

• formation of scale in water heaters

• pipe corrosion and buildup

• all of the above

Increase in population of a rapidly growing city, may be estimated by

• arithmetical mean method

• geometrical method

• incremental increase method

• graphical comparison method.

Pick up the incorrect statement from the following. The sources of water from underground are obtained from

• wells

• springs

• infiltration wells

• storage reservoirs

The factor affecting per capita demand, is

• size of the city

• climatic conditions

• cost of water

• all the above.