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Exam (elaborations)

Firefighter HAZMAT OPS Practice Test 1 Questions & Answers 2026/2027 | Exam Prep

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Firefighter HAZMAT OPS Practice Test 1 Questions & Answers 2026/2027 | Exam Prep

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Firefighter HAZMAT OPS Practice Test 1
_________ interfere with oxygen exchange during normal respiration.

a) Anesthetics
b) Carcinogens
c) Irritants
d) Asphyxiants - ANS-d) Asphyxiants

__________ is the minimum temperature at which a liquid gives off sufficient vapors to form an
ignitable mixture with air.

a) Ignition temperature
b) Autoignition temperature
c) Flash point
d) Reactivity point - ANS-c) Flash Point

A carboy may be used for transporting materials containing:

a) Radioactive Substances
b) Corrosives
c) Explosives
d) Poison Gases - ANS-b) Corrosives

A cyrogenic liquid tank car will have:

a) A single uninsulated shell
b) An enclosed time
c) A double shell with insulation
d) Fittings and valves visible on top of the tank car - ANS-c) A double shell with insulation

A liquid's ability to mix with water BEST defines:

a) Solubility
b) Surface Tension
c) Water Reactivity
d) Instability - ANS-a) Solubility

A reaction that is associated with over-pressurization of closed containers and occurs at a rate
of one second or less is called a:

a) Rapid Relief




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b) Violent Rupture
c) Detonation
d) Spill - ANS-b) Violent Rupture

A recon team is sent to observe a tank truck that has rolled over. The team reports that the
vehicle is an MC 312. The container most probably contains a:

a) Flammable Liquid
b) Corrosive Liquid
c) Poison Gas
d) Flammable Solid - ANS-b) Corrosive Liquid

An intermodal container that is capable of holding high-pressure gases 3,000psi or higher is a:

a) Cyrogenic intermodal tank
b) Tube module intermodal container
c) Pressurized intermodal tank
d) Nonpressurized intermodal tank - ANS-b) Tube module intermodal container

An MC 307/DOT 407 low-pressure chemical carrier is designed to carry chemicals with
pressures not to exceed _________ psi.

a) 3.0
b) 75.0
c) 40.0
d) 30.0 - ANS-c) 40.0

An uninsulated, single-shell vessel which carries gases that have been liquefied, is an:

a) MC 306/DOT 406
b) MC 307/DOT 407
c) MC 312/DOT 412
d) MC 331 - ANS-d) MC 331

At an emergency incident, the fire fighter may obtain appropiate MSDS information from:

a) CAMEO
b) The National Response Center
c) OSHA
d) CHEMTREC - ANS-d) CHEMTREC

Blood agents, such as Arsine, would fall under which UN/DOT hazard class and division?

a) 1.1




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