Chapter 33

Which type of breathing apparatus is equipped with an escape cylinder?

• Supplied-Air respirator

• Open-circuit SCBA

• Powered air-purifying respirator

• Closed-circuit SCBC

Which of the following is a defensive action?

• Patching

• Product transfer

• Plugging

• Diking

For which situation will structural firefighting protective clothing provide you with adequate protection?

• When you will be exposed to splashes of the material

• When there are high atmospheric concentration of the material

• None of these are correct

• When you will have to handle the material

How does a closed-circuit SCBA operate?

• Fresh air is supplied by one tank, and exhaled air is stored in another tank

• Exhaled carbon dioxide reacts with catalyst to produce oxygen

• All inhaled and exhaled gas stays within the system

• Exhaled breath is released to the atmosphere

How is the concentration of a gas typically expressed?

• Units of weight per unit of volume

• As a percentage

Which of the following statements about positive-pressure SCBA is correct?

• They are also known as "rebreathers"

• They use compressed or liquid oxygen

• They filter and condition atmospheric air for breathing

• They prevent exposure by ingestion as well as by inhalation

What is the term for a person having a radioactive material on his or her clothing?

• Absorption

• Contact

• Exposure

• Contamination

A level _ chemical-protective suit is designed to protect the wearer from gases, vapors, and liquids

• D

• B

• A

• C

What can be used to determine the pH of hazardous material?

• M-9 tapc

• M-8 paper

• Litmus paper

• Organic paper

Relocation of people who are threatened by a potential hazard is called?

• Rescue

• Evacuation

• Shelter in place