EIA - Quiz 3

Which of the following salts is the main cause of permanent hardness of water?

• Magnesium Sulphate

• Magnesium bicarbonate

• Magnesium carbonate

• None of these

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

• Oil refineries

• Paper industry

• Slaughterhouses

• All of these

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

• Suspended solids

• the sum of total solids and suspended solids

• Difference between total solids and suspended solids

• All of the above

Non-point sources of water pollution are

• easy to identify

• broad, diffuse area

• easy to clean up

• all of these

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

• Algal bloom

• Eutrophication

• Acidification

• None of these

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

• Lower

• Higher

• No such relation

Desirable temperature of potable water in degree celcius

• 20

• 15

• 10

• 5

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

• Nephelometer

• potentiometer

• tintometer

• osmoscope

Temporary hardness is removed by

• Zeolite process

• Boiling

• UV treatment

• Addition of lime

Specific conductivity is an indirect measurement of

• Alkalinity

• Acidity

• dissolved solids

• hardness