Which of the following is mainly responsible for the causes of water pollution?

The amount of solids passing through the filters in the process of filtration is .................

Non-point sources of water pollution are

----------------is the process in which a water body becomes overly enriched with nutrients

The higher the intensity of scattered light, ------- is the turbidity

Desirable temperature of potable water in degree celcius

Which of the following is used to measure the colour of water sample?

Temporary hardness is removed by

Specific conductivity is an indirect measurement of