MCQOPTIONS
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| 1. |
Which of the following is a group of bacteria found in human intestines, whose presence in water indicates contamination by disease-causing microorganisms ? |
| A. | Pseudomonas |
| B. | Coliform |
| C. | Clostridium |
| D. | Streptococcus |
| Answer» C. Clostridium | |