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1. The person ultimately responsible for your safety in the laboratory is: [] (a) the principal investigator [] (b) yourself [] (c) the safety committee [] (d) others in the lab [] (e) environmental health and safety
2. When disposing of chemicals, it is appropriate to: [] (a) pour them down the drain [] (b) separate the waste according to class [] (c) wait until large quantities have accumulated [] (d) pour all the waste into a common container [] (e) all of the above
3. Which of the following is considered inappropriate laboratory attire: [] (a) shorts [] (b) lab aprons [] (c) safety glasses [] (d) both (a) and (b) [] (e) all are appropriate
4. Before using gloves for protection, one should check them for: [] (a) cracks or holes [] (b) proper fit [] (c) appropriateness for the task that one is to perform [] (d) compatibility with the chemical that is to be used [] (e) all of the above
5. The EPA classifies waste by their reaction characteristics. Common acids and bases would fall under which of the following classifications: [] (a) ignitable [] (b) reactive [] (c) corrosive [] (d) toxic [] (e) all of the above
6. When working with a system under reduced pressure: [] (a) a small crack on a round bottom flask should not be of any concern [] (b) always examine all glassware before setting up to make sure that they are free of defects [] (c) use a shield to provide extra protection [] (d) if the vacuum is lower than 0.1 mm Hg, a small crack on a round bottom flask should not be of any concern [] (e) b and c
7. When using flammable solvents [] (a) it is Ok to use an open flame in the vicinity as long as you are very careful [] (b) never use burners and other ignition sources in the vicinity [] (c) never use burners, but electric heaters are not going to ignite a fire [] (d) be very careful, but use whatever heater is available at that time [] (e) (b) and (c)
8. In doing an extraction using a separatory funnel [] (a) pressure may build up inside the funnel [] (b) do not vent the separatory funnel near a flame [] (c) do not attempt to extract a solution until it is cooler than the boiling point of the extractant [] (d) (a) and (b) [] (e) all of the above
9. When distilling a flammable liquid at atmospheric pressure [] (a) always use boiling stones [] (b) boiling stones can be added at or near the boiling point [] (c) it is Ok to distill something to dryness that might have only residual epoxides [] (d) it is Ok to use an open flame as the heat source as long as you are very careful [] (e) (a) and (d)
10. When inserting a glass tube or rod into a stopper [] (a) lubricate the glass [] (b) never use twisting motions [] (c) hold the glass not more than two inches from the end to be inserted [] (d) (a) and (c) [] (e) all of the above
11. A fume hood is to be used [] (a) for conducting reactions that may result in an explosion [] (b) for disposal of toxic liquids and gases [] (c) to control exposure to toxic liquids and gases [] (d) with the sash in a maximally open position to allow the greatest air flow [] (e) in well-ventilated laboratories
12. A list of potential hazards associated with a mercury arc lamp is given below.
13. Which are appropriate rules for the use of compressed gas cylinders? [] (a) Always lubricate the valve of the cylinder before threading the regulator. [] (b) Empty gas cylinders completely, and cap them before returning them to the gas plant. [] (c) When moving cylinders, strap them to properly designed carts to ensure stability. [] (d) Never use cylinders if their contents cannot be identified positively. [] (e) (c) and (d)
14. Whis is an appropriate procedure for starting a centrifuge? [] (a) Close the lid and wait until the centrifuge reaches full operating speed. [] (b) Start the centrifuge and watch the rotor to make sure it is balanced. [] (c) Start the centrifuge and wait for at least five minutes to make sure it is balanced. [] (d) Close the lid and leave the area as a precaution. [] (e) Run the centrifuge first without the rotor to make sure it is properly anchored.
15. Lasers are classified according to their potential hazards. The significance of the classification is: [] (a) Class I means the laser is completely safe; Class IV means it can burn your skin. [] (b) Class I lasers can be used by anyone; Class IV lasers require a license. [] (c) Class I lasers are visible; Class IV lasers are invisible. [] (d) Class I lasers are not capable of blinding a person; Class IV lasers can blind a person instantly. [] (e) All of the above.
16. Select which of the following is a common way for hazardous chemicals to enter the body. [] (a) injection [] (b) ingestion [] (c) inhalation [] (d) absorption (e.g. through skin or eyes) [] (e) all of the above
17. Which of the following toxic effect best describes materials that tend to build up in the body as a result of numerous exposures. [] (a) acute poisoning [] (b) chronic poisoning [] (c) cumulative poisoning [] (d) substances in combination [] (e) all of the above
18. Which of the following toxic effects is best described by materials that tend to cause an immediate and sometimes severe physiological reaction. [] (a) acute poisoning [] (b) chronic poisoning [] (c) cumulative poisoning [] (d) substances in combination [] (e) all of the above
19. List all of the hazards that are required on MSDS for every chemical. [] (a) allergic hazards [] (b) precautions for spills and cleanup [] (c) health effects [] (d) (b) and (c) [] (e) all of the above
20. List all of the following for which a MSDS can be a useful reference. [] (a) reactivity information [] (b) lethal dosage [] (c) control measures [] (d) post exposure emergency first aid [] (e) all of the above
21. Chemicals labeled as lachrymators are generally considered to be [] (a) chemicals that are known to be explosive [] (b) extreme irritants to the skin, eyes, and respiratory tract and are dangerous in small quantities [] (c) sufficiently absorbed through skin as to cause possible toxic effects [] (d) agents that cause genetic alterations [] (e) all of the above
22. When should you look up a chemical's MSDS? [] (a) never [] (b) when your advisor tells you to [] (c) when you use a chemical for the first time [] (d) everytime [] (e) when you do not know the chemical formula
23. Which of the following require extreme caution when mixing? [] (a) oxidizing and reducing agents [] (b) acetic acid and perchloric acid [] (c) lithium, sodium, potassium and chlorinated hydrocarbons [] (d) peroxides and acids [] (e) all of the above
24. Which of the following will not form peroxides? [] (a) cyclooctene [] (b) acetone [] (c) ethyl ether [] (d) tetrahydrofuran [] (e) mineral oil
25. How long is it safe to store ethyl ether after opening? [] (a) one week [] (b) one month [] (c) one year [] (d) three months [] (e) forever
26. Eye wash stations, safety showers, fire extinguishers and alarms are: [] (a) safety equipment to fight fires with [] (b) things to play with in the lab [] (c) safety equipment you should be aware of in the lab [] (d) safety equipment in chemical storage areas only [] (e) safety equipment in chemistry stockrooms only
27. When an emergency occurs: [] (a) report the nature and location to your advisor [] (b) evacuate at once without notifying anyone [] (c) telephone friends in other labs [] (d) move injured persons [] (e) open all doors as you evacuate
28. A fire contained in a small vessel can usually be suffocated by: [] (a) picking up the vessel and throwing it in the sink [] (b) using an ABC type extinguisher [] (c) covering the vessel with a watchglass [] (d) pouring water on it [] (e) leave it alone; it will burn itself out
29. The best way to fight a fire is to: [] (a) call the fire department [] (b) cover the fire with a blanket [] (c) pour water on it [] (d) prevent it from happening in the first place [] (e) close all doors as you evacuate
30. When a chemical spill occurs covering a small amount of skin you should: [] (a) call the fire department [] (b) evacuate the lab [] (c) flush with water for 15 minutes and seek medical attention [] (d) use cream and lotion to soothe the affected area [] (e) use the safety shower for one minute
31. The storage of flammable and combustible liquids [] (a) is limited to three 45 gallon cabinets per room [] (b) is limited to two 30 gallon cabinets per room [] (c) is not limited, as long as approved storage cabinets are used [] (d) is limited to two 30 gallon or one 45 gallon storage cabinets per room [] (e) none of the above
32. Visitors in the lab are [] (a) never permitted [] (b) permitted after normal working hours [] (c) allowed as long as they are over 16 years of age [] (d) only allowed as part of a University sanctioned tour or with approval from the department [] (e) (b) and (c)
33. Cylinders containing corrosives must be [] (a) used within 6 months [] (b) returned within 1 year [] (c) returned within 6 months [] (d) ordered directly from the vendor [] (e) (b) and (d)
34. If a fume hood starts making excessive noise or vibration [] (a) contact your supervisor [] (b) contact the building liason [] (c) call a maintenance technician [] (d) stop using the hood [] (e) pull the fire alarm and evacuate the building
35. Multi-outlet plugs: [] (a) are not permitted [] (b) may be used with no restrictions [] (c) may be used if they contain a circuit breaker [] (d) may be used if they are part of an extension cord less than three feet in length [] (e) (c) and (d)