The layers such as lime stone and snd store which do not allow the water to pass through them are known as

Related MCQs

• The layers such as sand and gravel which allow the water to pass through them are known as
• The area of the openings in screens should be such that the velocity of flow through them does not exceed
• The lime soda process of water softening
• In lime soda process, the pH value of treated water is increased.
• The water bearing strala i.e. layers of sand, gravel etc, is called
• 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
• By lime soda process, hardness can be reduced to less than
• The water obtained from a lake is known as surface water.
• The organic impurities in water form a layer on the top of a filtering media. Such a layer is called
• The presence of calcium and magnesium bi-carbonates in water causes hardness in the water.