Amount of bleaching powder used for disinfection of well is

Q. Amount of bleaching powder used for disinfection of well is –

A.            2.5 gm for 500 ml of water

B.            5 gm for 500 ml of water

C.            2.5 gm for 1000 L of water

D.            5 gm for 1000L of water

Answer: 2.5 gm for 1000 L of water

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