The layers such as sand and gravel which allow the water to pass through them are known as

Related MCQs

• The layers such as lime stone and snd store which do not allow the water to pass through them are known as
• The water bearing strala i.e. layers of sand, gravel etc, is called
• Rapid sand filters are cheap and economical as compared to slow sand filters.
• The effective size of sand particles for rapid sand filters varies from
• The effective size of sand particles for slow sand filters varies from
• The area of the openings in screens should be such that the velocity of flow through them does not exceed
• Rapid sand filter can remove turbidity from water upto an extent of
• Slow sand filter is efficient to remove the bacterias from the raw water to an extent of
• After cleaning the slow sand filter, the filtered water should not be used for a period of
• The sanitation system in which a small portion of storm water is allowed to enter in the sanitary sewage sewers and the remaining storm water flows in separate set of sewers, is known as