CSMLS MLA Practice Test 1
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Sterilization by dry heat is performed at how many de-
grees Celsius?
A.) 100 B.) 170
B.) 170 Dry heat sterilization is generally done at 160-170 degrees
C.) 240 Celsius
D.) 310
E.) 380
What is the most widely used sterilization method in clin-
ical laboratories?
A.) Autoclaving
B.) Boiling A.) Autoclaving
C.) Chemical Sterilization
D.) Dry Heat Oven
E.) Ionizing Radiation
When using the autoclave, you should put sterilization
strips:
A.) Close to the air exhaust valve
B.) In the centre of each article B.) In the centre of each article
C.) On the bottom shelf of the autoclave
D.) On the outside of each pack
E.) Outside the autoclave
Which of the following should be observed during incin-
eration?
A.) Disinfect all articles before burning them
B.) Make sure at least three people are present
C.) Make sure complete burning takes place
C.) Make sure complete burning takes place
D.) Make sure the temperature reaches at least 120 de-
grees Celsius
E.) Sanitize all articles before burning them
, CSMLS MLA Practice Test 1
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Which statement about radiation hazards is true?
A.) Large amounts of radiation are used in the RIA depart-
ment
B.) Radiation accidents may be difficult to recognize B.) Radiation accidents may be difficult to recognize
C.) Radiation does not affect a fetus
D.) Radiation guidelines are set by the Food and Drug Act
E.) Radiation is not transferred into the body
Acid spills should be neutralized with:
A.) Acetic acid D.) Sodium bicarbonate
B.) Boric acid Acid spills should be neutralized with a weak base (e.g.,
C.) Potassium chlorate sodium bicarbonate) and then cleaned up with a paper
D.) Sodium bicarbonate towel.
E.) Sodium hydroxide
TLV is the concentration of a substance that:
A.) A worker can be exposed to for one hour without
B.) A worker can be exposed to over a working lifetime
adverse effect
without adverse effect
B.) A worker can be exposed to over a working lifetime
TLV (Threshold Limit Value) is the level that workers can be
without adverse effect
exposed to daily over a working lifetime without adverse
C.) Kills all test animals
effects.
D.) Kills half of test animals
E.) Makes half of human test subjects sick
Which of these is a good practice when working with
strong acids?
A.) Wear eye protection.
A.) Wear eye protection
*Latex gloves are NOT acid-resistant.
B.) Wear latex gloves
**You should NEVER add water to acid because this could
C.) Wear open-toed shoes
cause the acid to boil violently.
D.) When mixing acid and water, always add the water to
the acid. NOT the other way around.
Red on an NFPA chemical label indicates a: C.) Fire Hazard
A.) Acid hazard Red = Fire Hazard
, CSMLS MLA Practice Test 1
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B.) Carcinogen
Blue = Health Hazard
C.) Fire Hazard
Yellow = Reactivity/Instability Hazard
D.) Fume Hazard
White = Specific/Special Hazard
E.) Poison Hazard
What is the term for chemical that can burn or destroy
tissue?
A.) Cancerous
B.) Caustic B.) Caustic
C.) Magnetic
D.) Pathogenic
E.) Poisonous
What type of filter is used tin biological safety cabinets?
A.) Charcoal
B.) Electrostatic D.) HEPA
C.) Fiberglass *High Efficiency Particulate Air (Filter)
D.) HEPA
E.) UV Light
Class B fires occur with: B.) Flammable liquids
A.) Electrical equipment *Class A = Ordinary combustible materials
B.) Flammable liquids **Cass B = Flammable liquids/gases
C.) Glassware ***Class C = Electrical equipment
D.) Ordinary combustibles ****Class D = Flammable metallic substances (e.g., Na and
E.) Reactive metals K)
Class II(2) Biological Specimen containment should be
performed in:
A.) A class 1 biosafety cabinet
B.) A class 2 biosafety cabinet
B.) A class 2 biosafety cabinet
C.) A class 3 biosafety cabinet
D.) A laminar flow hood
, CSMLS MLA Practice Test 1
Study online at https://quizlet.com/_bgc4q7
What does WHMIS stand for?
A.) Women's Health and Maternity Inservice System
B.) Workplace Hazardous Materials Information System B.) Workplace Hazardous Materials Information System
C.) Workplace Health Monitoring and Informational Ser- *WHMIS is Canada's national hazard communication
vices standard.
D.) World Health Messages for the Informed Society
E.) World Human Meningitis Infection Surveillance
Which of these is a strong acid?
A.) Acetic Acid E.) Sulfuric Acid
B.) Carbonic Acid *There are only SEVEN strong acids: hydrochloric acid, ni-
C.) Nitrous Acid tric acid, sulfuric acid, hydrobromic acid, hydroiodic acid,
D.) Pyruvic Acid perchloric acid and chloric acid.
E.) Sulfuric Acid
In which of these situations should safety goggles be
worn?
A.) During blood collections
B.) During reagent and specimen preparation B.) During reagent and specimen preparation
C.) When talking to members of the public
D.) While inspecting reagent supplies
E.) While transporting sealed waste containers
Which concentration of bleach is used to decontaminate
benchtops?
A.) 10%
A.) 10%
*After disinfection with 10% bleach, surfaces must then
B.) 20%
be wiped down with 70% isopropyl or ethyl alcohol to
C.) 30%
inactivate the bleach and prevent corrosion of the surface.
D.) 40%
E.) 50%
Always keep picric acid:
A.) Dry
B.) Frozen
Study online at https://quizlet.com/_bgc4q7
Sterilization by dry heat is performed at how many de-
grees Celsius?
A.) 100 B.) 170
B.) 170 Dry heat sterilization is generally done at 160-170 degrees
C.) 240 Celsius
D.) 310
E.) 380
What is the most widely used sterilization method in clin-
ical laboratories?
A.) Autoclaving
B.) Boiling A.) Autoclaving
C.) Chemical Sterilization
D.) Dry Heat Oven
E.) Ionizing Radiation
When using the autoclave, you should put sterilization
strips:
A.) Close to the air exhaust valve
B.) In the centre of each article B.) In the centre of each article
C.) On the bottom shelf of the autoclave
D.) On the outside of each pack
E.) Outside the autoclave
Which of the following should be observed during incin-
eration?
A.) Disinfect all articles before burning them
B.) Make sure at least three people are present
C.) Make sure complete burning takes place
C.) Make sure complete burning takes place
D.) Make sure the temperature reaches at least 120 de-
grees Celsius
E.) Sanitize all articles before burning them
, CSMLS MLA Practice Test 1
Study online at https://quizlet.com/_bgc4q7
Which statement about radiation hazards is true?
A.) Large amounts of radiation are used in the RIA depart-
ment
B.) Radiation accidents may be difficult to recognize B.) Radiation accidents may be difficult to recognize
C.) Radiation does not affect a fetus
D.) Radiation guidelines are set by the Food and Drug Act
E.) Radiation is not transferred into the body
Acid spills should be neutralized with:
A.) Acetic acid D.) Sodium bicarbonate
B.) Boric acid Acid spills should be neutralized with a weak base (e.g.,
C.) Potassium chlorate sodium bicarbonate) and then cleaned up with a paper
D.) Sodium bicarbonate towel.
E.) Sodium hydroxide
TLV is the concentration of a substance that:
A.) A worker can be exposed to for one hour without
B.) A worker can be exposed to over a working lifetime
adverse effect
without adverse effect
B.) A worker can be exposed to over a working lifetime
TLV (Threshold Limit Value) is the level that workers can be
without adverse effect
exposed to daily over a working lifetime without adverse
C.) Kills all test animals
effects.
D.) Kills half of test animals
E.) Makes half of human test subjects sick
Which of these is a good practice when working with
strong acids?
A.) Wear eye protection.
A.) Wear eye protection
*Latex gloves are NOT acid-resistant.
B.) Wear latex gloves
**You should NEVER add water to acid because this could
C.) Wear open-toed shoes
cause the acid to boil violently.
D.) When mixing acid and water, always add the water to
the acid. NOT the other way around.
Red on an NFPA chemical label indicates a: C.) Fire Hazard
A.) Acid hazard Red = Fire Hazard
, CSMLS MLA Practice Test 1
Study online at https://quizlet.com/_bgc4q7
B.) Carcinogen
Blue = Health Hazard
C.) Fire Hazard
Yellow = Reactivity/Instability Hazard
D.) Fume Hazard
White = Specific/Special Hazard
E.) Poison Hazard
What is the term for chemical that can burn or destroy
tissue?
A.) Cancerous
B.) Caustic B.) Caustic
C.) Magnetic
D.) Pathogenic
E.) Poisonous
What type of filter is used tin biological safety cabinets?
A.) Charcoal
B.) Electrostatic D.) HEPA
C.) Fiberglass *High Efficiency Particulate Air (Filter)
D.) HEPA
E.) UV Light
Class B fires occur with: B.) Flammable liquids
A.) Electrical equipment *Class A = Ordinary combustible materials
B.) Flammable liquids **Cass B = Flammable liquids/gases
C.) Glassware ***Class C = Electrical equipment
D.) Ordinary combustibles ****Class D = Flammable metallic substances (e.g., Na and
E.) Reactive metals K)
Class II(2) Biological Specimen containment should be
performed in:
A.) A class 1 biosafety cabinet
B.) A class 2 biosafety cabinet
B.) A class 2 biosafety cabinet
C.) A class 3 biosafety cabinet
D.) A laminar flow hood
, CSMLS MLA Practice Test 1
Study online at https://quizlet.com/_bgc4q7
What does WHMIS stand for?
A.) Women's Health and Maternity Inservice System
B.) Workplace Hazardous Materials Information System B.) Workplace Hazardous Materials Information System
C.) Workplace Health Monitoring and Informational Ser- *WHMIS is Canada's national hazard communication
vices standard.
D.) World Health Messages for the Informed Society
E.) World Human Meningitis Infection Surveillance
Which of these is a strong acid?
A.) Acetic Acid E.) Sulfuric Acid
B.) Carbonic Acid *There are only SEVEN strong acids: hydrochloric acid, ni-
C.) Nitrous Acid tric acid, sulfuric acid, hydrobromic acid, hydroiodic acid,
D.) Pyruvic Acid perchloric acid and chloric acid.
E.) Sulfuric Acid
In which of these situations should safety goggles be
worn?
A.) During blood collections
B.) During reagent and specimen preparation B.) During reagent and specimen preparation
C.) When talking to members of the public
D.) While inspecting reagent supplies
E.) While transporting sealed waste containers
Which concentration of bleach is used to decontaminate
benchtops?
A.) 10%
A.) 10%
*After disinfection with 10% bleach, surfaces must then
B.) 20%
be wiped down with 70% isopropyl or ethyl alcohol to
C.) 30%
inactivate the bleach and prevent corrosion of the surface.
D.) 40%
E.) 50%
Always keep picric acid:
A.) Dry
B.) Frozen
