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Water_Treatment_Bundled_Examination_Test_2026_Tested_Questions_With.pdf

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Institution Water Treatment
Course Water treatment
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WATER TREATMENT EXAMINATION
COMPREHENSIVE QUESTIONS
ACCURATE ANSWERS


◉ What is flocculation? Answer: Slow mixing that forms larger
particle clumps called floc


◉ What is sedimentation? Answer: The settling of floc particles by
gravity


◉ What is filtration? Answer: Removing remaining particles by
passing water through media


◉ What is disinfection? Answer: Killing or inactivating disease
causing organisms


◉ What is the most common disinfectant in water treatment?
Answer: Chlorine


◉ What does turbidity measure? Answer: The cloudiness of water
from suspended particles


◉ What unit measures turbidity? Answer: NTU

, ◉ What is raw water? Answer: Untreated source water


◉ What are the two main water sources? Answer: Surface water and
groundwater


◉ Which source usually has more pathogens? Answer: Surface water


◉ Which source usually has more minerals? Answer: Groundwater


◉ What is pH? Answer: Measure of acidity or alkalinity


◉ What pH is neutral? Answer: 7


◉ What is alkalinity? Answer: The water's ability to resist pH change


◉ Why is alkalinity important? Answer: It stabilizes pH and helps
treatment processes work


◉ What is hardness? Answer: Calcium and magnesium dissolved in
water

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