The beach
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Science
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3 questions
Question 1
Multiple Choice
10 points
Which of the following substance should not be disposed into the sink?
A.
Organic solvents
B.
Salt water
C.
Ammonia
D.
Ethanoic acid
Question 2
Multiple Choice
10 points
Which of the following protection equipment can filter air through HEPA filter system?
A.
Fume cupboard
B.
Laminar flow cabinet
C.
Biological safety cabinet
D.
Mask
Question 3
Multiple Choice
10 points
Why mercury is harmful to human?
A.
Causes stroke
B.
Causes blockage of respiratory
tract
C.
Attacks nerve system, digestive
system, reproductive system and kidney
D.
Causes seizures