state gov TSPSC Forest Beat Officer (ఫారెస్ట్ బీట్ ఆఫీసర్) Mock Test 2023 General Science Biology Ecology & Environment
Which of the following scientific concept is used for waste water discharged from homes, hospitals, factories etc.?
1
Poured water
2
Impure water
3
Dirty water
4
Sewage water