PRACTICE QUESTIONS

SECTION A – True or False 1. You can enter a lab if the teacher is not present. False 2. Using unlabelled chemicals is O.K. as long as you know what you are doing. False 3. You should always dispose of specimens, materials and chemicals as instructed. True

4. Unknown clear liquids can be poured down a drain. False 5. You do not have to wear an apron, as instructed because you’re too cool. False 6. Long hair is a hazard while working in the lab. True 7. Eye protection is necessary when working with flammable materials. True

8.MSDS sheets are kept in the teachers front drawer of the lab. False 9. Only major accidents must be reported. False 10. You can find “Health Risks” information on MSDS sheets. True

Section B – Short Answer 1. What does WHMIS stand for?(2) Workplace Hazardous Materials Info. System 2. What does MSDS stand for? (2) Material Safety Data Sheets 3. What is the main difference between Poisonous/Infectious materials and Toxic materials? (2) P: effects very quickly / I: effects over time 4. When putting out a fire with an extinguisher, what is the proper technique? (2) Point at base of fire and use a sweeping motion

4. Class B fires need what chemical in order to extinguish them? (2) CO 2, dry chemicals 5. CO 2 is the main retardant for what type of fires? (1) ABC 6. What WHMIS symbol should appear on the following products: (4) A) Used scalpels - Biohazardous B) Bottled HCI - Corrosive C) Helium- Compressed gas D) Paint thinner - Poisonous

7. Identify the following WHMIS symbols? (4) Biohazardous Reactive Toxic Flammable