Process in which water is allowed to stand in a reservoir is called

Process in which water is treated with slaked lime and alum is called

Water that does not give scum with soap is called

Which of the following is an acute inflammation of the liver?

Water in swimming pools is purified by adding

Which of the following is a disease that proceeds from obstruction of the liver?

What percentage of sodium chloride is present in seawater?

Which of the following is an intestinal disease caused by a parasite, entamoeba?

Water that does not form scum is called

Process in which chlorine is added to water to kill any remaining bacteria is called

How much percentage of the Earth's crust is covered by water?

Hard water can block radiators due to the formation of

What is the total amount of water present on Earth?

Ice floats on top of the water because

What is given when electricity is passed through acidified water in a voltammeter?

Which of the following is transmitted by fecal contamination of water or food by an encysted organism?

Step of sewage water treatment in which effluent from a sewage plant is treated with chlorine is called

The third step of sewage water treatment is called

Water that gives little lather is called

Water exists in how many different states on Earth?