| | 1) What precautions are necessary to handle biological fluids? | |
| | a: lab coat |
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| | b: lab coat e goggles |
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| | c: lab coat e gloves |
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| | d: lab coat, goggles, gloves, appropriate footwear, and tongs to remove submerged objects |
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| | 2) What is the product of photochemical reaction of O2, induced by short-wavelength UV radiation? | |
| | a: ozone |
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| | b: water |
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| | c: hydrogen peroxyde |
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| | d: superoxyde ion |
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| | 3) Which of the following is not relevant to safety in the case of use of human-derived liquid: | |
| | a: washing hands before leaving the laboratory |
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| | b: wearing gloves before handling the sample |
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| | c: pipetting by mouth |
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| | d: carefully protecting cuts and abrasions of the skin |
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| | 4) Which of the following substances is potentially explosive? | |
| | a: perchloric acid |
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| | b: hydrazine |
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| | c: metallic sodium and potassium |
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| | d: all of the above |
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| | 5) How should metallic sodium be stored? | |
| | a: in the refrigerator |
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| | b: under kerosene, petroleum or petroleum ether |
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| | c: in a container filled with water |
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| | d: all answers from a to c are correct |
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| | 6) What do metallic sodium and potassium develop when placed in contact with water? | |
| | a: hydroxyl ions |
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| | b: hydrogen ions |
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| | c: hydrogen gas |
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| | d: oxygen |
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| | 7) How is picric acid stored? | |
| | a: under kerosene |
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| | b: under H2O |
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| | c: in the freezer |
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| | d: under vacuum |
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| | 8) What should be marked on containers stored in freezers and refrigerators? | |
| | a: owner's name and date of packaging |
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| | b: owner's name and substance contained |
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| | c: wner's name only |
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| | d: owner's name, substance contained and date of packaging; hazard warning should be added if necessary |
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| | 9) In what environment should be handled all volatile solvents and substances that give rise to gaseous emissions? | |
| | a: on the workbench |
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| | b: in cold room, to limit evaporation |
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| | c: under hood |
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| | d: outside |
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| | 10) Which of these equipment can have a lethal voltage? | |
| | a: automatic pipette |
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| | b: electrophoresis apparatus |
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| | c: printer |
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| | d: emergency lamp |
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| | 11)Through which route can toxic substances exert their effect? | |
| | a: by ingestion |
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| | b: by dermal absorption |
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| | c: by inhalation |
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| | d: all of the above |
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| | 12) In which of the following places is it not advisable to leave dry ice? | |
| | a: in a tightly closed container |
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| | b: in a sink |
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| | c: in an open container on the work counter |
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| | d: under a hood |
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| | 13) How should contaminated bio-derived material be disposed of? | |
| | a: as a normal garbage |
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| | b: after autoclave treatment |
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| | c: after treatment with disinfectant |
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| | d: after treatment in an autoclave or with disinfectant |
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| | 14) What standard procedures should be followed when using centrifuges? | |
| | a: do not exceed the allowed angular velocities |
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| | b: carefully balance the containers subjected to centrifugation |
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| | c: check the proper functioning of the device that prevents starting with the centrifuge lid open |
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| | d: all of the above |
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| | 15) What regulations should be followed when storing solvents? | |
| | a: do not store chemicals, acids or solvents on the floor |
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| | b: do not store hazardous materials on shelves placed at face height |
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| | c: do not use the space inside the hoods as a storage room |
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| | d: all of the above |
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