Q. |
The maximum concentration of lead in drinking water should not exceed. |
A. | 0.0005 mg/litre |
B. | 0.005 mg/litre |
C. | 0.05 mg/litre |
D. | 0.5 mg/litre |
E. | 5 mg/litre |
Answer» C. 0.05 mg/litre |
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