Chlorine is an example of which hazard type?

• A. Chlorine
• B. Oxygen
• C. Carbon Dioxide
• D. Nitrogen

Answer: (A)

Chlorine is a toxic inhalation hazard gas. It’s a chemical that, when breathed in, can severely irritate the respiratory system and cause acute injury or death, so it’s classified as a TIH—a choking/irritant-type hazard. That’s why it’s the best fit for this question.

Oxygen, while essential for life and capable of supporting combustion, isn’t considered a hazardous toxic inhalation gas in this context. Carbon dioxide and nitrogen are also not TIH materials in the sense used here: CO2 can cause asphyxiation at very high concentrations but isn’t treated as a TIH gas in typical hazmat classifications, and nitrogen is an inert gas that can displace oxygen but isn’t a toxic inhalation hazard.