SAFETY CERTIFICATION EXAM

NOTE:  Before you may perform any experiments, you must score 100% on this exam. Test yourself by choosing the first letter of each answer to each question.

1. poured down the sink

2. put in the garbage  can

3. put in the liquid organic waste container

4. put into the solid organic waste container

5. put into the “glass only” containers.

2.  What is the best action to be taken if sodium hydroxide solution is spilled on your hand?

1.  wash immediately with a dilute solution of acetic acid

2. wash immediately with a 1% solution of hydrochloric acid

3. wash immediately with large quantities of cool water

4. dip the affected area into a plastic tray with water

5. rinse the skin and pay no attention to the skin sensation

3.  Which of the following is not good practice in the laboratory?

1. confining loose hair and loose clothing with rubber bands and safety pins

2. having a drink of water

3. wearing a laboratory coat

4. wearing shoes rather than sandals

5. washing hands frequently

4.  Which of the following statements is false?

1. Broken glass is to be placed in specially marked GLASS WASTE ONLY containers.

2. Do NOT place anything except broken glass in the GLASS WASTE ONLY containers.

3. No organic liquid or solution may be poured down the drain.

4. Strong acids , such as HCl and H₂SO₄ , should be disposed in the  LIQUID ORGANIC WASTE  containers.

5. When diluting strong acids always add the acid to the water.

5. A few drops of the concentrated sulfuric acid spilled on a student’s hand. What is the best action to take?

1. wipe off the liquid with a paper towel
2. wash the spill area with saturated sodium bicarbonate solution
3. wash the spill area with ethanol
4. put solid sodium carbonate on the affected area
5. wash the spill area with cold running water for 10 minutes.

6.  After completing the experiment you have10 mL of  hexanes left over. What
     should be done with it?

1. return it to the hexanes container under the hood

2. pour it into the sink

3. distil it into an Erlenmeyer flask

4. pour it into a liquid organic waste container

5. leave it in a beaker on your bench to evaporate

7.  Safety goggles need to be worn…

1. whenever you are in the area where chemicals are handled and stored.
2. only when working with strong acids and bases.
3. only when mixing solutions.
4. at all  times in the CHEM280 labs.
5. (a) and (d)

8. Material Safety Data Sheets (MSDS) contain information regarding…

1. Disposal procedures.
2. Health hazards.
3. First-aid procedures.
4. Reactivity hazards.
5. All of the above and more.

9.  The term “carcinogen” means…

1. Cancer causing.
2. Birth defects.
3.  Hazardous in combination.
4. Allergy development.
5.  (a) and (b)

10.  The term “teratogen” means…

1. Cancer causing.

2. Birth defects.

3. Hazardous in combination.

4. Allergy development.

5. (b) and (c)

11.  The term “sensitizer” means…

1. Cancer causing.

2. Birth defects.

3. Hazardous in combination.

4. Allergy development.

5. (c) and (d)

12. Before attending a laboratory, you should have…

1. Carefully studied the material in the laboratory manual and completed the pre-lab exercises.

2. Made special note of any precautions outlined in the laboratory manual.

3. Checked the MSDS for any hazards for all chemicals used in the experiment to be performed.

4. Think about the procedures in the experiment to be performed.

5. Done all of the above.

13.  Fire extinguishers are located

1. near exits.
2. near wastebaskets.
3. near sinks.
4. under the bench.
5. close to windows.

14.   Which of the following statements is false?

1. Never use chipped or cracked glassware.

2. Keep your work area organized and uncluttered.

3. Clamp glassware for support.

4. In the lab if you are uncertain about how to carry out a particular procedure ask neighbour how to do it.

5. Wet or lubricate tubing before connecting it to the condenser.

15.   Which of the following statements is false?

1. Keep walkways clear.

2. Keep drawers closed.

3. Clean up spills immediately.

4. Keep backpacks, books, and coats away from the working area.

5. If during the lab you feel hungry, you can have a piece of gum.

16.   Which of the following statements is false?

1. Some liquids bump when heated.
2. Boiling stones should be added just before the solution starts to boil.
3. Boiling stones should be added before applying any heat.
4. Extreme heat or cold causes burns.
5. Boiling stones should be added after the solution starts to boil.

17.   Which of the following statements is false?

         Before leaving the lab you should...

1. Turn off water.

2. Turn off unused equipment (heating mantle, m. p. apparatus…)

3. Clean up the bench.

4. Clean up the balance area.

5. Return all unused chemicals to original bottles.

18.   Which of the following statements is false?

1. No unattended experiments should be performed in the lab.
2. Familiarize yourself with details of the experiment to be performed in the lab.
3. Your safety in the lab depends on how well you are prepared for the lab.
4. Unplug electrical cords properly.
5. If the glassware is completely shattered you can dispose it in the wastebasket.

19.   Which of the following statements is false?

1. If you are on fire or have spilled chemicals on yourself run quickly to the drench showers.

2. Open sandals, short skirts and shorts are not allowed in the lab.

3. If during the lab you get thirsty, you are allowed to keep a can of Pepsi at your locker.

4. Never heat a closed system.

5. Lab coats are mandatory in CHEM280 labs.

20.   Which of the following statements is false?

                  In case of fire alarm you should…

1. Stop whatever you were doing and walk immediately towards the nearest clear exit.

2. Exit the building as soon as possible. DO NOT RUN.

3. Do not use the elevators to evacuate the building.

4. Gather outside the building in the pre-arranged spot.

5. Wander around in the lab to see what is happening.

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