Hazwoper 40 lesson 3 - Study guides, Class notes & Summaries

HAZWOPER 40: Lesson 5 Quiz | Latest Version | Graded A+ In the case of a significant fire involving water, what is usually the best approach to minimize human exposure? Let the fire burn while minimizing human contact, especially if the fire involves reactive substances If a liquid has a pH of 11, what does that indicate about its hydrogen ion concentration? It has a very low concentration of hydrogen ions Are flammable liquids transported and used more frequently than corros...

HAZWOPER 40: Lesson 7 Quiz Latest Version | 2024/2025 | Graded A+ What are the two primary types of positive-pressure respirators? - Pressure-demand and continuous-flow - Pressure-demand and variable-flow - Constant-flow and adjustable-pressure - Continuous-flow and pressure-demand Pressure-demand and continuous-flow Which specific substance is used for testing equipment approved by MSHA and NIOSH for protection against organic vapors? - Formaldehyde - Ammonia - Stannic...

HAZWOPER 40 - Lesson 1: Regulation Overview Questions and Answers | Latest Version | 2024/2025 | Graded A+ What scenario is not included under OSHA’s guidelines for hazardous waste operations and emergency responses? - An individual involved in cleaning hazardous waste sites - A household exposed to hazardous substances buried beneath their residence - An employee working at facilities dealing with hazardous waste - A responder managing emergencies involving hazardous material spil...

HAZWOPER 40: Lesson 17 Quiz | Latest Update | Graded A+ Due to their straightforward construction, which type of samplers does not require formal calibration? Passive samplers What kind of samplers utilize natural forces instead of mechanical ones to gather samples? Passive samplers Is it accurate to say that contamination levels can be assessed by placing sampling devices near workers' breathing zones? True Where are integrated samples typically analyzed? 2 In a...

HAZWOPER 40 - Lesson 3 – Toxicology (2022/2023) Rated A+ Chemicals in combination can produce different biological responses than the responses seen when exposure is to one chemical alone. True False True ________ is the most common route of exposure leading to a toxic dose in the work environment Injection Ingestion Inhalation Eye/Skin contact 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 concen...

HAZWOPER 40 - Lesson 3 – Toxicology SOLUTIONS 2023//2024 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 g...

HAZWOPER 40: Lesson 22 Quiz 100% Solved 2024 Current recommendations of the U.S. Public Health Service can be obtained through: - Answer- The CDC The healthcare professional providing treatment to the exposed employee must be provided all of the following EXCEPT: - Answer- The name and exposure history of the source individual, if available The rate of chronic HBV infection is greater in: - Answer- Italy than in England While the probability of source blood being HBsAg positive ranges fro...

HAZWOPER 40: Lesson 22 Quiz 100% Solved 2024 Current recommendations of the U.S. Public Health Service can be obtained through: - Answer- The CDC The healthcare professional providing treatment to the exposed employee must be provided all of the following EXCEPT: - Answer- The name and exposure history of the source individual, if available The rate of chronic HBV infection is greater in: - Answer- Italy than in England While the probability of source blood being HBsAg positive ranges fro...

HAZWOPER 40 Lesson 3 Toxicology Exam Questions with Correct Answer (UPDATE VERIFIED) ________ is the most common route of exposure leading to a toxic dose in the work environment Injection Ingestion Inhalation Eye/Skin contact - ANSWER- .________ 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 studie...