Free practice · Water Treatment
Grade 1 Water Treatment Practice Questions
Answer each question, then reveal the correct answer and a full explanation. This is independent study material aligned to commonly tested topics, not official exam questions — exact content varies by state and exam vendor.
Which process is primarily responsible for removing suspended particles by adding a coagulant to neutralize their charge?
You dissolve 5 lbs of a chemical into a total solution weighing 50 lbs. What is the percent strength of the solution?
What is the purpose of the flocculation process that follows coagulation?
Water flows through a 6-inch diameter pipe (cross-sectional area ≈ 0.2 ft²) at a rate of 400 gpm. What is the approximate velocity?
What is the main goal of a source water (watershed) protection program?
Want the full topic breakdown for this exam? See the Grade 1 Water Treatment exam guide, or start from the Water Treatment overview.