Water Treatment OIT Test Questions with Verified Answers
Rated A
What units are used to measure water pressure? animals; is flammable and explosive
b) Is a greenish/yellow gas with a penetrating odour;
a) Kilowatts is heavier than air
b) Kilopascals c) Is a yellowish gas with an irritating odour; insoluble
c) Horsepower in water
d) Head units - ANSWER -b) Kilopascals d) Is lighter than air; soluble in water and forms a salt
which is lethal to microorganisms - ANSWER -
b) Is a greenish/yellow gas with a penetrating odour;
Which of the following is NOT an example of PPE is heavier than air
(Personal Protective Equipment)?
a) Exhaust fan What happens when two or more different elements
b) SCBA combine?
c) Face shield
d) Traffic vest - ANSWER -a) Exhaust fan a) chemical compound is formed
b) atom is created
c) molecule is formed
Which of the following are operators-in-training NOT d) concentration is created - ANSWER -a)
allowed to do? chemical compound is formed
a) There are no restrictions on the duties of an
operator-in-training What is the definition of a confined space?
b) Any operational duties if not in the presence of
another operator a) Any space which is not actively ventilated by an
c) Anything which could effect the quality of the electrical ventilation system
water/wastewater b) Any space from which exit by an injured worker is
d) Be the operator with overall operational difficult
responsibility of the system - ANSWER -d) Be c) Any space where hazardous gas can accumulate
or an oxygen deficient atmosphere can occur
the operator with overall operational responsibility of
the system d) Any space where the distance from floor to ceiling
is less than 3 metres - ANSWER -a) Any space
which is not actively ventilated by an electrical
Define the term "head" as used in hydraulic systems. ventilation system
a) The block of an internal combustions engine
b) The ability of a piston pump to overcome the force The flow of electrical current is measured in
of gravity
c) The height or energy of water above a specified a) Amperes
point b) Ohms
d) The distance between the liquid level and the c) Volts
cover of a well - ANSWER -c) The height or d) Watts - ANSWER -a) Amperes
energy of water above a specified point
What is meant by the term 'organic compounds'?
Which of the following statements accurately Chemical compounds that are:
describes some of the properties of chlorine?
a) not made from carbon
a) I a colourless gas which is toxic to plants and b) contain carbon, hydrogen and oxygen
1/6
, Water Treatment OIT Test Questions with Verified Answers
Rated A
c) can easily oxidize c) Hydrogen sulphide gas in all concentrations is only
d) can dissolve in water - ANSWER -b) contain an irritant, so proceed with the task
carbon, hydrogen and oxygen d) Do not enter the confined space until there is no
hydrogen sulphide detected, and then only when all
safety equipment is in place - ANSWER -d) Do
The volume of chlorine increases ______ times when not enter the confined space until there is no
it is depressurized into gas hydrogen sulphide detected, and then only when all
safety equipment is in place
a) 100
b) 200
c) 350 What is the main purpose of the Safe Drinking Water
d) 450 - ANSWER -d) 450 Act?
a) Certify operators
What causes hardness in water? b) Protect human health
c) Supervise drinking water systems
a) high pH d) Sample and test drinking water - ANSWER -
b) low turbidity b) Protect human health
c) dissolved mineral salts
d) alkalinity - ANSWER -c) dissolved mineral
salts What does a sample with a high BOD level indicate?
a) Low organic material content
O. Reg. 129/04 addresses the licensing of: b) High organic material content
c) High level of inorganic suspended solids
a) drinking water operators d) Low level of pathogenic bacteria - ANSWER -
b) water quality analysts b) High organic material content
c) medical officers of health
d) sewage works operators - ANSWER -d)
sewage works operators Which of the following statements is the most
accurate concerning a "Certificate of Approval" (C of
A), issued by the Ministry of Environment?
Which of the following is NOT an isolation valve?
a) The terms and conditions stated in a C of A are
a) ball legally enforceable
b) check b) The terms and conditions stated in a C of A are
c) butterfly recommendations on how the facilities should be
d) globe - ANSWER -b) check operated
c) A C of A is only required for facilities built before
1965
An operator smells hydrogen sulphide at the d) Once a facility has been built the C of A is no
entrance of a deep confined space. that actions longer required and can be discarded -
should the operator take? ANSWER -a) The terms and conditions stated
in a C of A are legally enforceable
a) hydrogen sulphide is only detected in low
concentrations and will only cause headaches at this
concentration. Proceed if the task is short Coagulation is the mixing of coagulants with water to:
b) Vent the confined space while working
2/6
Rated A
What units are used to measure water pressure? animals; is flammable and explosive
b) Is a greenish/yellow gas with a penetrating odour;
a) Kilowatts is heavier than air
b) Kilopascals c) Is a yellowish gas with an irritating odour; insoluble
c) Horsepower in water
d) Head units - ANSWER -b) Kilopascals d) Is lighter than air; soluble in water and forms a salt
which is lethal to microorganisms - ANSWER -
b) Is a greenish/yellow gas with a penetrating odour;
Which of the following is NOT an example of PPE is heavier than air
(Personal Protective Equipment)?
a) Exhaust fan What happens when two or more different elements
b) SCBA combine?
c) Face shield
d) Traffic vest - ANSWER -a) Exhaust fan a) chemical compound is formed
b) atom is created
c) molecule is formed
Which of the following are operators-in-training NOT d) concentration is created - ANSWER -a)
allowed to do? chemical compound is formed
a) There are no restrictions on the duties of an
operator-in-training What is the definition of a confined space?
b) Any operational duties if not in the presence of
another operator a) Any space which is not actively ventilated by an
c) Anything which could effect the quality of the electrical ventilation system
water/wastewater b) Any space from which exit by an injured worker is
d) Be the operator with overall operational difficult
responsibility of the system - ANSWER -d) Be c) Any space where hazardous gas can accumulate
or an oxygen deficient atmosphere can occur
the operator with overall operational responsibility of
the system d) Any space where the distance from floor to ceiling
is less than 3 metres - ANSWER -a) Any space
which is not actively ventilated by an electrical
Define the term "head" as used in hydraulic systems. ventilation system
a) The block of an internal combustions engine
b) The ability of a piston pump to overcome the force The flow of electrical current is measured in
of gravity
c) The height or energy of water above a specified a) Amperes
point b) Ohms
d) The distance between the liquid level and the c) Volts
cover of a well - ANSWER -c) The height or d) Watts - ANSWER -a) Amperes
energy of water above a specified point
What is meant by the term 'organic compounds'?
Which of the following statements accurately Chemical compounds that are:
describes some of the properties of chlorine?
a) not made from carbon
a) I a colourless gas which is toxic to plants and b) contain carbon, hydrogen and oxygen
1/6
, Water Treatment OIT Test Questions with Verified Answers
Rated A
c) can easily oxidize c) Hydrogen sulphide gas in all concentrations is only
d) can dissolve in water - ANSWER -b) contain an irritant, so proceed with the task
carbon, hydrogen and oxygen d) Do not enter the confined space until there is no
hydrogen sulphide detected, and then only when all
safety equipment is in place - ANSWER -d) Do
The volume of chlorine increases ______ times when not enter the confined space until there is no
it is depressurized into gas hydrogen sulphide detected, and then only when all
safety equipment is in place
a) 100
b) 200
c) 350 What is the main purpose of the Safe Drinking Water
d) 450 - ANSWER -d) 450 Act?
a) Certify operators
What causes hardness in water? b) Protect human health
c) Supervise drinking water systems
a) high pH d) Sample and test drinking water - ANSWER -
b) low turbidity b) Protect human health
c) dissolved mineral salts
d) alkalinity - ANSWER -c) dissolved mineral
salts What does a sample with a high BOD level indicate?
a) Low organic material content
O. Reg. 129/04 addresses the licensing of: b) High organic material content
c) High level of inorganic suspended solids
a) drinking water operators d) Low level of pathogenic bacteria - ANSWER -
b) water quality analysts b) High organic material content
c) medical officers of health
d) sewage works operators - ANSWER -d)
sewage works operators Which of the following statements is the most
accurate concerning a "Certificate of Approval" (C of
A), issued by the Ministry of Environment?
Which of the following is NOT an isolation valve?
a) The terms and conditions stated in a C of A are
a) ball legally enforceable
b) check b) The terms and conditions stated in a C of A are
c) butterfly recommendations on how the facilities should be
d) globe - ANSWER -b) check operated
c) A C of A is only required for facilities built before
1965
An operator smells hydrogen sulphide at the d) Once a facility has been built the C of A is no
entrance of a deep confined space. that actions longer required and can be discarded -
should the operator take? ANSWER -a) The terms and conditions stated
in a C of A are legally enforceable
a) hydrogen sulphide is only detected in low
concentrations and will only cause headaches at this
concentration. Proceed if the task is short Coagulation is the mixing of coagulants with water to:
b) Vent the confined space while working
2/6
