Which gas is used in purification of drinking water?

Which gas is used for combustion ?

Which one of the following is not used for disinfection of drinking water

Which gas is used as fuel in houses ?

select correct statement (s) : blood is a colloidal solution, Alum is used in water purification, River water is a colloidal solution of clay, Colloidal medicines are more effective due to large surface area.

When electricity is passed through a common salt solution, sodium hydroxide is produced along with the liberation of two gases 'X' and 'Y' The gas X burns with a pop sound whereas 'Y' is used for disinfecting drinking water. Identify X and Y.

When electricity is passed through a common salt solution, sodium hydroxide is produced along with the liberation of two gases 'X' and 'Y' The gas X burns with a pop sound whereas 'Y' is used for disinfecting drinking water. State the reaction of Y with slaked lime.

Identify the compound of calcium which is yellowish white powder and is used for disinfecting drinking water. Write its chemical name and formula. How is it manufactured? Write the chemical equation for the reaction involved. Also list two other uses of the compound.

Science, like any knowledge, can be put to good or bad use, depending on the user. Given below are some of the applications of science. Formulate your views on whether the particular application is good, bad or something that cannot be so clearly categorised: - purification of water for drinking