WorksheetsPROPER USE OF LABORATORY APPARATUS AND EQUIPMENT
Total questions: 15
Worksheet time: 5mins
What are the two important properties of microscope?
illumination
magnification
resolution
disinfection
Which best defines the compound microscope compared to dissecting microscope?
gives three dimensional view
has greater magnification
specimen can be manipulated
thick specimen can be observed
10x, 40x, 100x, 200x: Which provides a better image of the object?
10x
40x
100x
200x
What is measured by a triple beam balance?
density
mass
volume
weight
What is the other term for weights on the triple beam balance?
beam
pointer
pan
rider
Before using the triple beam balance, what should one do if all the riders are at the left zero mark but the pointer does not point to zero?
Calibrate using the knob.
Get the reading.
Move the middle slider.
Place the object on the pan.
Which is the second step in using the pipette?
Detach the bulb.
Hold the pipette with the fingers except the index finger.
Immerse the tip on the container.
Insert the pipette.
In using the transfer pipette, what will you do with the bulb to allow the liquid to go up?
cover
insert
release
squeeze
To dispense liquid from a transfer pipette, what should be done with the bulb?
cover
insert
release
squeeze
If not held by the hand, where should the burette be secured DURING an experiment?
iron stand
test tube rack
table
tray
If you have a 25 ml burette that is full of liquid, what will the reading be?
0.01 mL
1.0 mL
5.0 mL
25.0 mL
When reading a burette, where should you look at to determine the level of the water?
bottom of the burette
highest part of the curved surface of the water
lowest part of the curved surface of the water
top of the burette
Which two materials can be autoclaved?
acids
flammable materials
stainless steel pans
glasswares
Which among pressure, steam, time, and volume is the main responsible for sterilizing objects using an autoclave?
pressure
steam
time
volume
Which specific part of the bacteria is killed by steam in an autoclave?
cell membrane
cell wall
mitochondria
nucleus
