Teaching REET Mock Test Series 2024-25 Level 1 & 2 (Hindi-Sanskrit-English) General Knowledge Ecology and Environment Environmental pollution
The maximum allowable concentration of fluorides in drinking water is:
1
1.00 mg per litre
2
1.25 mg per litre
3
1.50 mg per litre
4
1.75 mg per litre
5
Question Not Attempted