Practice Test – 100 Questions

Take a full length practice exam of 100 randomly generated questions. Missed questions are reviewed at the end of the test.

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Distribution Question

What is the recommended chlorine dosage when disinfecting a water main using the slug method?

50 mg/L
100 mg/L
500 mg/L
300 mg/L

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Sample test question:

When should new packing rings be installed?

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