MLPAO Test Prep ~ Lab Safety and
Equipment EXAM , With Complete solution
2025/2026
Microscope: Magnification definition - ANSWERS-Ability to increase the size or enlarge
the image (not clarity)
Microscope: Resolution definition - ANSWERS-Ability to clearly differentiate and
determine two close objects as separate identities
Microscope: Refraction definition - ANSWERS-The act of bending light as it passes
from one medium to another
Microscope: Refractive index definition - ANSWERS-The speed at which light passes
from one medium of a particular density to another in a vacuum
Microscope: Numerical Aperture definition - ANSWERS-Measure of its ability to resolve
fine details of an image
Microscope: Vernier scales definition - ANSWERS-Relocate a specific object on a slide
using the scales located on the microscope stage
WHMIS classes and Hazard symbols: Hazards under Class A - ANSWERS-
Compressed Gas
WHMIS classes and Hazard symbols: Hazards under Class B - ANSWERS-Flammable
and Combustible material
WHMIS classes and Hazard symbols: Hazards under Class C - ANSWERS-Oxidizing
Materials
WHMIS classes and Hazard symbols: Hazards under Class D - ANSWERS-Materials
causing Immediate and serious toxic effects (1), Materials causing other toxic effects
(2), Biohazardous infectious materials (3)
WHMIS classes and Hazard symbols: Hazards under Class E - ANSWERS-Corrosive
Material
WHMIS classes and Hazard symbols: Hazards under Class F - ANSWERS-
Dangerously Reactive Material
, Volumetric pipette - ANSWERS-Extremely accurate, calibrated to accurately deliver a
fixed volume of liquid
Serological pipette - ANSWERS-Graduated pipette in which calibration marks extend to
the tip
Mohr pipette - ANSWERS-Graduated pipette in which calibration marks end at a point
above the tip
Most accurate pipette - ANSWERS-Volumetric
What is the graduated cylinder used to measure - ANSWERS-make accurate volume
measurements
What is more accurate a graduated cylinder or beaker? - ANSWERS-Graduated
Cylinder
Borosilicate glassware is used for it's high ___ and _____ resistance - ANSWERS-
temperature and chemical
Polystrene is commonly used for _____ materials, is not autoclavable, and limited to
____ - ANSWERS-disposable, solvents
Autoclave ideal temperature - ANSWERS-121c for 15m at 15 psi
Biohazard waste for decontamination - ANSWERS-Garbage cycle
Liquids and slow steam exhaustion - ANSWERS-Liquid cycle
Dry glassware/Plastic - ANSWERS-Dry Cycle
Bagged - ANSWERS-Gravity cycle
Ideal temperature for dry heat - ANSWERS-160c for 1h
Sterilization definition - ANSWERS-Destruction of all microbial life including spores
Disinfection definition - ANSWERS-Elimination or reduction harmful microorganisms
Class of Compressed Gas - ANSWERS-A
Class of Flammable and Combustible material - ANSWERS-B
Class of Oxidizing Material - ANSWERS-C
Equipment EXAM , With Complete solution
2025/2026
Microscope: Magnification definition - ANSWERS-Ability to increase the size or enlarge
the image (not clarity)
Microscope: Resolution definition - ANSWERS-Ability to clearly differentiate and
determine two close objects as separate identities
Microscope: Refraction definition - ANSWERS-The act of bending light as it passes
from one medium to another
Microscope: Refractive index definition - ANSWERS-The speed at which light passes
from one medium of a particular density to another in a vacuum
Microscope: Numerical Aperture definition - ANSWERS-Measure of its ability to resolve
fine details of an image
Microscope: Vernier scales definition - ANSWERS-Relocate a specific object on a slide
using the scales located on the microscope stage
WHMIS classes and Hazard symbols: Hazards under Class A - ANSWERS-
Compressed Gas
WHMIS classes and Hazard symbols: Hazards under Class B - ANSWERS-Flammable
and Combustible material
WHMIS classes and Hazard symbols: Hazards under Class C - ANSWERS-Oxidizing
Materials
WHMIS classes and Hazard symbols: Hazards under Class D - ANSWERS-Materials
causing Immediate and serious toxic effects (1), Materials causing other toxic effects
(2), Biohazardous infectious materials (3)
WHMIS classes and Hazard symbols: Hazards under Class E - ANSWERS-Corrosive
Material
WHMIS classes and Hazard symbols: Hazards under Class F - ANSWERS-
Dangerously Reactive Material
, Volumetric pipette - ANSWERS-Extremely accurate, calibrated to accurately deliver a
fixed volume of liquid
Serological pipette - ANSWERS-Graduated pipette in which calibration marks extend to
the tip
Mohr pipette - ANSWERS-Graduated pipette in which calibration marks end at a point
above the tip
Most accurate pipette - ANSWERS-Volumetric
What is the graduated cylinder used to measure - ANSWERS-make accurate volume
measurements
What is more accurate a graduated cylinder or beaker? - ANSWERS-Graduated
Cylinder
Borosilicate glassware is used for it's high ___ and _____ resistance - ANSWERS-
temperature and chemical
Polystrene is commonly used for _____ materials, is not autoclavable, and limited to
____ - ANSWERS-disposable, solvents
Autoclave ideal temperature - ANSWERS-121c for 15m at 15 psi
Biohazard waste for decontamination - ANSWERS-Garbage cycle
Liquids and slow steam exhaustion - ANSWERS-Liquid cycle
Dry glassware/Plastic - ANSWERS-Dry Cycle
Bagged - ANSWERS-Gravity cycle
Ideal temperature for dry heat - ANSWERS-160c for 1h
Sterilization definition - ANSWERS-Destruction of all microbial life including spores
Disinfection definition - ANSWERS-Elimination or reduction harmful microorganisms
Class of Compressed Gas - ANSWERS-A
Class of Flammable and Combustible material - ANSWERS-B
Class of Oxidizing Material - ANSWERS-C
