Exam (elaborations)
2024 DRINKING WATER TREATMENT OPERATOR CLASS 1 EXAM WITH CORRECT ANSWERS
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2024 DRINKING WATER TREATMENT OPERATOR CLASS 1 EXAM WITH CORRECT ANSWERS
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2024 DRINKING WATERTREATMENT OPERATOR CLASS 1
EXAM WITH CORRECT ANSWERS
If a customer complains about the drinking water characteristics, the
operator should record the complaint and... - CORRECT-ANSWERSInvestigate
immediately
Chemical reactions take place more rapidly in _______ water. - CORRECT-
ANSWERSWarmer
The uptake of water or dissolved chemicals by a cell or organism. -
CORRECT-ANSWERSAbsorption
The process of adding air to water. - CORRECT-ANSWERSAeration
Chemicals that cause very fine particles to clump together into larger
particles. - CORRECT-ANSWERSCoagulants
The gathering of fine particles in water by gentle mixing after the addition of
coagulant chemicals to form larger particles. - CORRECT-
ANSWERSFlocculation
A water treatment process in which solid particles settle out of the water
being treated in a large clarifier or sedimentation basin. - CORRECT-
ANSWERSSedimentation
lime - CORRECT-ANSWERSA chemical commonly used to raise pH is...
manganese - CORRECT-ANSWERSBlack stains on plumbing fixtures might be
attributed to...
1000 grams - CORRECT-ANSWERSone kilogram equals...
The indicator organisms used to determine contamination of drinking water -
CORRECT-ANSWERSColiform group
Fe - CORRECT-ANSWERSChemical symbol for iron
, 2.31 - CORRECT-ANSWERSOne pound per square inch of pressure will raise
water_______ ft.
pressure due to depth or elevation of the water - CORRECT-ANSWERSStatic
Head is defined as...
10% solution of ammonia hydroxide - CORRECT-ANSWERSWhat is used to
detect chlorine leaks?
.433 psi - CORRECT-ANSWERS1 ft=
denser than air. - CORRECT-ANSWERSChlorine gas is...
calcium scale - CORRECT-ANSWERSPolyphosphates may be used in the
water treatment to retard corrosion and...
powder - CORRECT-ANSWERSCalcium hypochlorite is formulated as a
after a pipe is laid in place - CORRECT-ANSWERSA water main should be
disinfected..
lower pH. - CORRECT-ANSWERSCarbon Dioxide in water will..
feet per second - CORRECT-ANSWERSVelocity is expressed in terms of...
acid - CORRECT-ANSWERSA pH reading of 6.0 in raw water indicates the
sample is...
0-14 - CORRECT-ANSWERSThe pH scale runs from...
neutral - CORRECT-ANSWERSA pH value of 7.0 is considered to be..
moisture - CORRECT-ANSWERSChlorine is very corrosive when combined
with...
ammonia - CORRECT-ANSWERSChloramines are formed by the addition of
chlorine and...
meter the flow of fluid - CORRECT-ANSWERSThe purpose of a rotameter is to
Na - CORRECT-ANSWERSChemical symbol for sodium is...
pounds per square inch - CORRECT-ANSWERSPressure is usually measured in
...
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