The amount of bleaching powder required to disinfect 1000 liters of water is
A. 1.5 gms
B. 2.5 gms
C. 3.5 gms
D. 4.5 gms
Answer:B
The amount of bleaching powder required to disinfect 1000 liters of water is
A. 1.5 gms B. 2.5 gms C. 3.5 gms D. 4.5 gms