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WorksheetsScience Quiz on virtual crime scene
Total questions: 15
Worksheet time: 8mins
Which substance can be used to test whether a mystery powder is baking soda?
Water
Vinegar
Salt
Sugar
What happens to red litmus paper when dipped in an acidic liquid?
Turns blue
Turns red
Turns green
Disappears
What is the purpose of using chromatography in a CSI investigation?
To test temperature
To mix chemicals
To separate and compare inks or dyes
To grow bacteria
You find two hair strands at a crime scene. What tool is best to examine them?
Ruler
Bunsen burner
Microscope
Magnet
When you add iodine to starch, what color appears?
Red
Purple
Blue-black
Yellow
Which tool can be used to compare ink in a note and suspect's pen?
Litmus paper
Microscope
Chromatography paper
Thermometer
What happens when you add vinegar to baking soda?
Nothing
The liquid turns blue
Bubbles and fizz form
It melts
A hair strand is found at the scene. What feature should be examined under a microscope?
Smell
Sound
Thickness and color
Taste
A person with blood group AB can receive blood from which of the following groups?
Only AB
A, B, and AB
O only
A, B, AB, and O
What type of antibodies are present in the plasma of a person with blood group O?
Only anti-A
Only anti-B
Both anti-A and anti-B
No antibodies
Which part of the compound microscope is used to adjust the focus of the specimen quickly?
Fine adjustment knob
Coarse adjustment knob
Objective lens
Eyepiece
The magnification of a compound microscope is calculated by:
Adding the power of both lenses
Dividing eyepiece by objective
Multiplying eyepiece and objective lens powers
Subtracting objective from eyepiece
Which part holds the objective lenses and allows them to be rotated?
Stage
Nosepiece (revolving nosepiece)
Mirror
Arm
8. What is the main purpose of chromatography?
a) To separate the components of a mixture
b) To identify the components of a mixture
c) To quantify the components of a mixture
d) All of the above
a
b
c
d
The principle involved in paper chromatography is:
A) Adsorption
B) Partition
C) Solubility
D) Volatility
a
b
c
d
