HAZWOPER 40 - Lesson 3 – Toxicology Exam Questions And Answers Verified 100% Correct

HAZWOPER 40 - Lesson 3 – Toxicology Exam Questions And Answers Verified 100% Correct An example of a chronic response to chemical exposure is ________. Nausea Brain or muscle damage Liver, kidney, or lung damage All of the above - ANSWER Liver, kidney, or lung damage Toxicology is the study of ________ and the degree to which the substance can be harmful to living things. Natural toxins Chemical toxicity Hazardous chemicals Toxins - ANSWER Chemicals that affect various tissues causing redness, rashes, or even imaging are called ________. Mutagens Irritants Carcinogens Asphyxiant - ANSWER Toxic dose is ________ for every living thing. Different The same Consistent Conclusive - ANSWER Different Which method of toxic chemical entry is the least commonly found at the workplace? Inhalation Dermal contact Ingestion Injection - ANSWER Injection It is possible for the interaction of two toxic chemicals can produce less than the expected results. True False - ANSWER True Chemical for deprived the victim's body tissue of oxygen are called ________. Mutagens Irritants Carcinogens Asphyxiants - ANSWER Asphyxiants ________ refers to the specific amount of particular material that results in a death in sample group of lab animals. Constant number of deaths Share of deaths Lethal dose Majority of deaths - ANSWER Lethal dose Workplace exposure concentration recommended by NIOSH for declaration by OSHA has an acceptable amount is called a(n) ________. PEL TLV REL IDLH - ANSWER REL Chemicals in combination can produce different biological responses than the responses seen when exposure is to one chemical alone. True False - ANSWER True ________ is the most common route of exposure leading to a toxic dose in the work environment Injection Ingestion Inhalation Eye/Skin contact - ANSWER LD 50 of 25 mg/m3 means that a concentration of 25 mg/m3 of a certain substance indicates: 50 people out of a group of 80 exposed to a concentration 25 mg/m3 of a substance were shown to have experienced a fatal dose. 50% of the concentration of a substance cause fatality in those be exposed. A concentration of 25 mg/m3 of a substance is shown to have been fatal to 50 percent of a test group of animals. LD 50 is a fictitious term and does not indicate anything. - ANSWER A concentration of 25 mg/m3 of a substance is shown to have been fatal to 50 percent of a test group of animals. Factors affecting response to chemical exposure include: Toxicity Route of exposure Chemical dose All of the above - ANSWER All of the above ________ provide most of what we know about the dangerous effects of toxic substances. Epidemiological studies Animal studies Estimation studies Actual exposures to a chemical in the workplace - ANSWER Epidemiological studies Animal studies Example of chemical ________ are carbon monoxide and hydrogen cyanide. Hepatoxins Hematoxins Asphyxiants Nephrotoxins - ANSWER Asphyxiants The ACGIH publication: ________ for Chemical Substances and Physical Agents, OSHA standard 29 CFR part 1910.1000, and other standards reference identify substances that can be readily absorbed through the skin, mucous membranes, and/or eyes by either airborne exposures or direct contact with a liquid.