This is the "paper" version of the Module 1 Quiz. You might want to work out the answers to the quiz using this sheet, before you start the real quiz, which is on Blackboard. All questions are either multiple choice or true/false.

1. A proper statement of risk contains two elements, one of them is:
a. Height of the hazard
b. Probability of harm
c. Time to failure
d. Injury mode.

2. The other element of risk is
a. Severity of the harm
b. Time to failure
c. Time of failure
d. GIGO

3. When someone says an act is "safe" they mean the risks are (be careful)
a. Inconsequential
b. Very small
c. Acceptable to them
d. Not very high.

4. Evaluating risks from a high pressure tank exploding is the job of an industrial hygienist? True or False

5. The chemical that caused Dr. Wetterhahn's death was:
a. A very small quantity of dimethyl mercury
b. A very small quantity of ethly mercury
c. Large doses of triethyl ketone
d. None of the above.

6. The likely cause of Minamata Disease is
a. Unknown
b. Arsenic
c. Organic mercury
d. Catalytic shellfish poison.

7. A special case of the ED50 that involves death is called:
a. LD50
b. Half-toxic point
c. Median Lethal Dose
d. Both a. and c.

8. The LD50 for most chemicals is about the same (within two orders of magnitude). True or False

9. Contaminants in water are often expressed as mg/l. That is mg of contaminant per:
a. Liter of water
b. Liter of contaminated water (solution)
c. Liter of distilled water
d. Neither, contaminated water is measured in kilograms.

10. A chemical that is liquid at room temperature might give off a gas phase. This phase is called:
a. Noxious gas
b. Ambient gas
c. A vapor
d. Matrix.