Deck 21: Fire Hazards and Life Safety

Question 1

What are the four elements of the fire tetrahedron?

A) Air, fuel, ignition, and chemical chain reaction
B) Air, fuel, ignition, and flame
C) Oxygen, fuel, heat, chemical chain reaction
D) Nitrogen, fuel, ignition, and smoke
E) Nitrogen, fuel, smoke, chemical chain reaction

Answer 1

Oxygen, fuel, heat, chemical chain reaction

Question 2

What term is used to describe a chemical reaction that creates heat?

A) Exothermic reaction
B) Endothermic reaction
C) Explosion
D) Class A reaction
E) Class B reaction

Answer 2

Exothermic reaction

Question 3

The elements represented in the fire tetrahedron are fuel, oxygen, and heat, and ignition.

Answer 3

False

Question 4

Flammable liquids have a higher flash point than combustible liquids.

Question 5

The blue area an NFPA 704 label identifies health hazards.

Question 6

Hypergolic reactions consume more heat than they generate.

Question 7

The fire point is the lowest temperature for a given fuel at which vapours are produced in sufficient concentrations to flash in the presence of a source of ignition.

Question 8

Class C fires involve combustible, easily oxidized metals such as aluminum, magnesium, titanium, and zirconium.

Question 9

Three elements required to start and sustain fire are oxygen, fuel, heat.

Question 10

The explosive range of a material refers to the distance from the source that a given volume can travel if ignited.

Question 11

Carbon monoxide is not a colourless, odourless, deadly gas.

Question 12

Fires are classified according to their properties, which relate to the nature of the fuel. What class of fire has a metal fuel?

A) Class A
B) Class B
C) Class C
D) Class D
E) Class M

Question 13

Chemical reactions in a fire break down materials into basic elements

Question 14

Fire hazards are conditions that favour fire development or growth.

Question 15

Most gases are heavier than air.

Question 16

What are the three elements required for starting and sustaining fire?

A) Heat, smoke and fire
B) Smoke, fuel, and heat
C) Fuel, heat, and oxygen
D) Oxygen, fire, and smoke
E) Heat, oxygen, and fire

Question 17

Exothermic chemical reactions consume more heat than they generate.

Question 18

The by-product of combustion is energy in the form of light.

Question 19

What is the temperature at which a given fuel can burst into flame?

A) Ignition temperature
B) Combustion point
C) Flame point
D) Fire temperature
E) Both A and B

Question 20

Cooling is one of the principal ways to control a fire or extinguish it.

Question 21

CO₂ would be a suitable extinguishing agent for which classes of fires?

A) A and B
B) B and C
C) C and D
D) A and C
E) B and D

Question 22

The result of incomplete combustion of fuel is carbon monoxide, which is

A) Odourless
B) Colorless
C) Tasteless
D) A deadly gas
E) All of the above

Question 23

Which of the following are products of combustion?

A) Solids, vapours, oxidizers, and hydrogen
B) Gases, flame, heat, and smoke
C) Oxygen, hydrogen, and vapour
D) Vapours, oxidizers, and fuel
E) Solids, gasses, nitrogen, and oxygen

Question 24

Which type of fire detecting device measures changes in infrared energy that is radiated by smoke?

A) Thermal expansion detectors
B) Ionization sensors
C) Radiation sensors
D) Photoelectric fire sensors
E) Infrared detectors

Question 25

National Fire Protection Association statistics show that most people die in fires from what cause?

A) Burnt flesh
B) Infection
C) Heat stroke
D) Building collapse
E) Smoke inhalation