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1. |
There_are_protozoa_present_in_the_water._Its_name_is_Dinobryen._What_is_the_dose_of_copper_sulfate_required_to_kill_it? |
A. | 0.02ppm |
B. | 0.3ppm |
C. | 0.5ppm |
D. | 0.8ppm |
Answer» C. 0.5ppm | |