Class 9 Chemistry · Chapter 13 · Test 4
Lab Safety Descriptions
25 MCQs covering chemical hazard recognition laboratory precautions radiation and asphyxiation safety PPE hazard signs fire safety emergency showers and emergency procedures.
25 questions · 20 min · 25 marks
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Sample questions
The first 5 of 25. Try each one, then tap to see the answer.
Question 1
What should students do before beginning laboratory work?
- ABecome familiar with the laboratory layout and fittings
- BStart experiments immediately
- CWork without supervision
- DIgnore emergency equipment
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Answer: A
Students should familiarize themselves with the laboratory layout and fittings before beginning work.
Question 2
Why should students not work alone in the laboratory?
- AExperiments should be performed with the laboratory instructor and staff present
- BIt increases the amount of chemical waste
- CIt makes experiments faster
- DIt prevents the use of equipment
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Answer: A
Students should not work alone because experiments should be performed in the presence of the laboratory instructor and other staff.
Question 3
What should be determined before beginning an experiment?
- APotential hazards
- BThe price of chemicals
- CThe number of textbooks
- DThe laboratory timetable
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Answer: A
Potential hazards should be determined before beginning laboratory work.
Question 4
What should students do to avoid accidents caused by overcrowding?
- AStay at safe distances
- BAvoid all laboratory equipment
- CWork in groups without space
- DStand close to chemicals
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Answer: A
Students should avoid crowding and stay at safe distances.
Question 5
Which activity is prohibited in the laboratory?
- ABringing food into the laboratory
- BChecking equipment
- CFollowing safety precautions
- DWearing protective equipment
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Answer: A
Food should not be brought into the laboratory.
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