Weber, Hazardous Materials Technician Chapter 3

Weber, Hazardous Materials Technician Chapter 3: Toxicology The classification of hazardous material whose mechanism interferes with breathing, oxygen transport within the body, or oxygen uptake in the cells is defined as a(n): (p. 61 ) Irritant Convulsant Asphyxiant Sensitizer Besides ingestion, which of the following is NOT a route of entry into the body for a hazardous material? (p.76 ) Injection Inhalation Absorption Osmosis An agent that when in contact with moisture produces hydrochloric acid in the respiratory tract creating a respiratory irritant: (p.63 ) Respiratory agent Choking agent Blood agent Biological agent Chemicals that interfere with the body’s ability to take in or utilize oxygen are classified as: (p. 63 ) Blood agents Respiratory agents Choking agents Biological agents Which statement about bacteria is NOT correct? (p.67 ) Bacteria are only single celled living organisms Most bacteria are harmless to humans Bacteria are living organisms that require a host to reproduce The plague and anthrax are caused by bacteria A naturally occurring toxin that is responsible for outbreaks of food poisoning due to improper production, canning, and storage of food that produces symptoms in about 4 to 6 hours describes what type of toxin? (p.68 ) Botulinum Staphylococcus Cytotoxin Rickettsia Which of the following types of radioactive materials is used in smoke detectors? (p.69 ) Cobalt (Co-60) Tritium (H-3) Americium (Am-241) Cesium (Cs-137) The largest form of ionizing radiation composed of two protons and two neutrons with a net charge of +2 describes ____________ radiation. (p.71 ) Alpha Beta Gamma Neutron The smallest form of ionizing radiation that possesses mass and a charge that is identical to an electron produced when a neutron spontaneously decays into a proton and an electron. (p. 72 ) Alpha Beta Gamma Neutron Radiation that is purely electromagnetic radiation that is without mass or charge. (p.72 ) Alpha Beta Gamma Neutron Which of the following methods allows you to be able to reduce your exposure to radiation to as low as reasonably achievable (ALARA)? (p.74 ) Increase the distance between you and the source of radiation Decrease your exposure time to the source of radiation Increase the shielding between you and source of radiation All of above Which of the following statements BEST describes an acute effect? (p.77 ) Acute effects occur over an extended period of time Acute effects occur quickly upon exposure that can cause short- and long-term effects Acute effects occur over long periods that cause short-term effects None of above A chemical below a specific level in which NO ill effects are seen or felt BEST describes: (p.77 ) Threshold effect Potentiated effect Latent effect Delayed effect The effects of a certain chemical by itself may be harmless, but when combined with another chemical can cause damage BEST describes: (p. 77 ) Lethal effect Threshold effect Potentiated effect Latent effect What statement BEST describes lethal concentration 50%? (p.78 ) The amount of a substance that kills half the test population by the route of inhalation The amount of a substance that kills half the test population by the route of ingestion The amount of a substance that kills half the test population by the route of absorption All of above Which of the following values represents an atmosphere that poses an immediate hazard to life or produces immediate, irreversible, debilitating effects on health? (p. 81 ) REL PPM IDLH TWA The maximum airborne concentration to which an average healthy person may be exposed ten hours a day, 40 hours a week BEST defines: (p.80 ) IDLH TLV-TVA REL TLV-STEL The maximum airborne concentration of a chemical that a healthy worker can be exposed to for eight hours a day, 40 hours a week, throughout their career without experiencing any permanent health problems describes: (p. 80 ) PEL TLV-TWA TLV-C IDLH Which of the following exposure values could be repeated a maximum of four times daily for 15 minutes with a 60-minute rest period between exposures for an 8-hour workday? (p.80 ) TLV-TWA TLV-C PEL TLV-STEL The airborne concentration of a chemical under which nearly all workers may be repeatedly exposed to without exhibiting adverse health effects describes: (p. 80) TLV PEL REL IDLH Answer Key: 1. c 2. d 3. b 4. a 5. c 6. a 7. c 8. a 9. b 10. c 11. d 12. b 13. a 14. c 15. a 16. c 17. c 18. a 19. d 20. a Weber, Hazardous Materials Technician ©2013 by Education, Inc.