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WATER TREATMENT OIT TEST QUESTIONS
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WATER TREATMENT OIT TEST QUESTIONS
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WATER TREATMENT OIT TEST QUESTIONSb) Kilopascals - Answers -What units are used to measure water pressure?
a) Kilowatts
b) Kilopascals
c) Horsepower
d) Head units
a) Exhaust fan - Answers -Which of the following is NOT an example of PPE (Personal
Protective Equipment)?
a) Exhaust fan
b) SCBA
c) Face shield
d) Traffic vest
d) Be the operator with overall operational responsibility of the system - Answers -Which
of the following are operators-in-training NOT allowed to do?
a) There are no restrictions on the duties of an operator-in-training
b) Any operational duties if not in the presence of another operator
c) Anything which could effect the quality of the water/wastewater
d) Be the operator with overall operational responsibility of the system
c) The height or energy of water above a specified point - Answers -Define the term
"head" as used in hydraulic systems.
a) The block of an internal combustions engine
b) The ability of a piston pump to overcome the force of gravity
c) The height or energy of water above a specified point
d) The distance between the liquid level and the cover of a well
b) Is a greenish/yellow gas with a penetrating odour; is heavier than air - Answers -
Which of the following statements accurately describes some of the properties of
chlorine?
a) I a colourless gas which is toxic to plants and animals; is flammable and explosive
b) Is a greenish/yellow gas with a penetrating odour; is heavier than air
c) Is a yellowish gas with an irritating odour; insoluble in water
d) Is lighter than air; soluble in water and forms a salt which is lethal to microorganisms
a) chemical compound is formed - Answers -What happens when two or more different
elements combine?
a) chemical compound is formed
, b) atom is created
c) molecule is formed
d) concentration is created
a) Any space which is not actively ventilated by an electrical ventilation system -
Answers -What is the definition of a confined space?
a) Any space which is not actively ventilated by an electrical ventilation system
b) Any space from which exit by an injured worker is difficult
c) Any space where hazardous gas can accumulate or an oxygen deficient atmosphere
can occur
d) Any space where the distance from floor to ceiling is less than 3 metres
c) organic materials - Answers -Trihalomethanes are produced when chlorine reacts
with:
a) inorganic materials
b) chlorine dioxide
c) organic materials
d) ultra violet light
d) amount of chlorine that remains in water after disinfection - Answers -What is the
chlorine residual in water?
a) the amount of chlorine applied to the water daily
b) low concentrations of chlorine gas
c) chlorine salt which is left after water evaporates
d) amount of chlorine that remains in water after disinfection
b) 0.3 mg/L - Answers -The chlorine dosage of a town's water source is 4.0 mg/L. The
chlorine demand for the water is 3.7 mg/L. What is the chlorine residual?
a) 0 mg/L
b) 0.3 mg/L
c) 3.7 mg/L
d) 4.3 mg/L
a) screens, coagulation, flocculation, filters, chlorination - Answers -Which of the
following is the correct order of processes within a cognitional surface water treatment
plant?
a) screens, coagulation, flocculation, filters, chlorination
b) screens, flocculation, coagulation, chlorination, filters
c) chlorination, screens, filtration, coagulation, flocculation
d) screens, filters, flocculation, coagulation, chlorination
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