1. Quiz on Laboratory Safety

2. Put the Bunsen burner on a heat-proof mat.
Which of the following is the common mistake when using the Bunsen burner?
Put the Bunsen burner on a heat-proof mat.
Check the gas tap before lighting the Bunsen burner.
Open the air hole before lighting the Bunsen burner.
Turn off the gas tap immediately after use.

3. 2. Which of the following is NOT the structure of a Bunsen burner?
heat-proof mat
air hole
rubber tubing
collar

4. 3. When we are using a Bunsen burner, we should wear safety goggles to protect our
month.
nose.
face.
eyes.

5. 4. Which of the following apparatus is NOT necessary for boiling a beaker of water in the laboratory?
heat-proof mat
anti-bumping granules
tripod
Bunsen burner

6. 5. The correct steps of using a Bunsen burner are:
Close the air hole, light a match, light above the chimney, turn on the gas tap.
Light a match, open the air hole, turn on the gas tap, light above the chimney.
Open the air hole, turn on the gas tap, light a match, light above the chimney.
Turn on the gas tap, close the air hole, light a match, light above the chimney.

7. 6. Which of the following combination is correct?
Flammable
Radioactive
Harmful
Carcinogenic

8. 7. Which of the following is NOT the fire extinguisher commonly found in schools?
Water type extinguisher
Carbon dioxide type extinguisher
Foam type extinguisher
Dry powder type extinguisher

9. 8. Which of the following can be used to put out an electrical fire?
Water type extinguisher
Carbon dioxide type extinguisher
Foam type extinguisher

10. Only (i) Only (ii) Only (i) and (ii) Only (ii) and (iii)
9. What safety precautions should be taken in the laboratory?
Keep the laboratory clean and tidy.
Dial 999 if accidents occur.
Students with long hair
are not allowed to enter the laboratory.
Only (ii)
Only (i) and (ii)
Only (ii) and (iii)