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1. Because you work with chemicals in a laboratory, federal law (OSHA) requires that you be familiar with

the contents of the Chemical Hygiene Plan (CHP) for UAF

the location and use of MSDS for all chemicals in your work area

the management and proper disposal of hazardous wastes that you generate

all of the above

2. At the end of the work day, chemicals that have been used for experiments should be

left on the lab bench so they are ready for tomorrow's work

moved to the fume hood for overnight storage

put back into the appropriate storage location(s)

left for your lab supervisor to put away

3. Which of the following are acceptable in a lab where chemicals are used (check all that apply)

Long pants

Lab coat

Sandals

Gum

High-heeled shoes

Gloves

Loose, baggy clothing

Long-sleeved shirt

Coffee mug without lid

Closed-toe shoes

Coffee mug with lid

Long hair worn loose

4. Why should you never use solvents to wash your hands after working in the lab?

5. Dan uses sodium hydroxide solutions and phosphoric acid in his work, and spends about 4 hours per day working with these chemicals. He wears disposable nitrile gloves, which are acceptable to use with these chemicals. Which of the following is TRUE regarding Dan's use of these gloves?

They are completely impermeable to the chemicals so he can reuse them for a few days, even if he spills some of the chemical(s) on his hands

He can use one pair of gloves for the entire work day, unless he spills the chemical(s) on his hands - then he should change them immediately

He should change his gloves several times throughout the day, even if he doesn't spill any of the chemical(s) on his hands because no glove is completely impermeable to any chemical and its associated vapors

He is wasting money from the lab budget by using so many gloves every day

6. Flammable chemicals are color-coded:

gray, orange, or green

blue

yellow

red

7. Corrosive chemicals are color-coded:

yellow

white or white with black stripe

red

blue

8. Health hazards are color-coded:

white or white with black stripe

green, gray, or orange

red

blue

9. When diluting strong acids, you should:

always add the water to the acid

always add the acid to the water

either way will be fine

add a little base first to reduce splattering when you add the water

10. Sodium nitrate, silver nitrate, nitric acid, and perchloric acid are all examples of:

flammable chemicals

corrosive chemicals

reactive chemicals/oxidizers

general use chemicals

11. The symbol at the right is used to designate:

biohazardous material

radioactive material

perishable material

reactive material

12. Examples of physical hazards that may be encountered in a lab include ALL of the following, EXCEPT:

compressed gases

electrical devices

solvents

lasers

13. To prevent backwashing of chemical vapors out of a chemical fume hood, all work should be conducted at least _____ inside the fume hood.

1"

2"

4"

6"

14. A lab worker has just spilled concentrated hydrochloric acid all over the front of his/her lab coat. The quantity is sufficient to have soaked through the lab coat and has gotten the clothing underneath wet. In addition to notifying his/her supervisor as soon as possible of the accident, s/he should:

quickly finish the task at hand and then go home to change clothes

immediately get in the safety shower, remove contaminated clothing, and remain in the shower for at least 15 minutes

remove the contaminated clothing and put on a clean lab coat before getting into the safety shower for 15 minutes

quickly grab a bunch of paper towels to soak up the acid from his/her lab coat and clothing before it soaks through his/her skin

BONUS question: What additional PPE should this worker have been wearing when working with that quantity of acid?

15. Which of the following statements is TRUE concerning chemical storage in a lab?

all chemicals should be stored together on shelves, and arranged alphabetically so they can be located quickly when they are needed

all chemicals should be segregated and stored according to hazard class

diluted solutions or mixtures of chemicals are okay to keep unlabeled containers as long as they are used up within a week

flammable solvents and health hazards should be stored in the chemical fume hood

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Page last update on 3/17/08 by A.Chism