40) For taking water which one is provided inside the building and streets

41) Water consumption per captia, per day, for domestic purpose, as per Indian Standard is

42) As per IS:10500 for drinking water standards, the acceptance limit of pH value is

43) As per IS:10500 for drinking water standards, the acceptable limit of Turbidity, NTU, max is

44) A water tank of size 1.5 cubic meters can hold water of quantity