When the pH value of water is more than 7, it represents

Related MCQs

• If the level of source of water is higher than that of the place of consumption, the system adopted for supplying water is
• When chlorine is added to raw water at more than one point, the process is termed as break point chlorination.
• The quantity of arsenic in water for domestic purposes should not be more than 0.05 ppm.
• The particle will settle down more rapidly in water at high temperatures than at lower temperatures.
• 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
• Plain chlorination is adopted for treating the water having turbidities less than 20 to 30 ppm.