Self-assessment form


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