engineering recuitment OSSC Combined Technical Services (ଓଡିଶା) Mock Test 2023-24 Environmental Engineering Quality of Water
The chlorine demand of a water sample was found to be 0.2 mg/l. The amount of bleaching powder containing 30% available chlorine to be added to treat 1000 liter of such a water sample is
1
0.67 g
2
0.06 g
3
1.33 g
4
0.14 g