Hazardous Mataterial - Recognizing and Identifying the Hazards No. 1 Questions taken from Jones & Bartlett Fundamentals of Fire Fighter Skills (3rd Edition) Progress Indicator: Question 5 of 20 5.  Which of the following is an example of a material included in Division 2.2 of the gases class? p. 114 Choices: Carbon monoxide Carbon dioxide Oxygen Methane