When lead is present in water, it

Related MCQs

• Lead should be present in large quantity in water.
• The maximum permissible quantity of lead in water for domestic supplies is
• Calcium sulphate present in water causes corrosion.
• When manganese is present in water, it reduces the degree of hardness.
• The water supplysystem should be designed for the present population only.
• The most important source of water for public water supply is
• The presence of calcium and magnesium bi-carbonates in water causes hardness in the water.
• The water obtained from a lake is known as surface water.
• In designing a water works for a city to meet the water demand for public use, a provision of about
• 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