

MCQOPTIONS
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1. |
For disinfection of water with ultraviolet rays, the turbidity should not exceed: |
A. | 15 mg/l |
B. | 25 mg/l |
C. | 50 mg/l |
D. | 75 mg/l |
E. | 85 mg/l |
Answer» B. 25 mg/l | |