Ifsta 7 question bank 2024 answered

IFSTA 7 Question Bank 2023 Answered Which product of combustion acts as a chemical asphyxiant by excluding oxygen from the blood, leading to hypoxia of the brain and tissues? A) Carbon dioxide (CO2) B) Carbon monoxide (CO) C) Aerosolized fuel particles D) Hydrogen cyanide (HCN) - ANSWER-B Combustion can occur within a range of concentration of fuel vapor and air; this range is referred to as the: A) vapor pressure range. B) surface to mass range. C) flammable (explosive) range. D) oxidation (combustion) range. - ANSWER-C Which statement describes the factor that MOST influences compartment fire development? A) Whether the fire is fuel-limited or ventilation-limited B) Whether the fuel is cellulose-based or petroleum-based C) Ratio of square footage to ceiling height of the compartment D) Ambient temperature and wind speed outside the compartment - ANSWER-A An extinguishing agent, such as dry chemical or Halon-replacement agent, terminates the combustion reaction by: A) cutting off the oxygen supply to the fuel. B) interfering with the chemical chain reaction. C) cooling the fuel below the ignition temperature. D) reacting with the fuel to create a fire-resistant layer. - ANSWER-B Materials that burn at normal oxygen levels will burn more intensely in _____ atmospheres. A) flaming B) nonflaming C) oxygen-enriched D) oxygen-deficient - ANSWER-C Which situation would likely be granted an exception to the rule that prohibits filling an unshielded air cylinder while a firefighter ... Purchase the document to see the full attachment