The greatest hazard with the generation and handling of carbon dioxide is ___.

• A. Fire
• B. Asphyxiation
• C. Explosion
• D. Corrosion

Answer: (B)

Asphyxiation is the main danger when generating and handling carbon dioxide because CO2 displaces the breathable oxygen in the air and can accumulate in poorly ventilated or enclosed spaces. It’s colorless and odorless, so people may not notice the air quality dropping until symptoms appear—dizziness, headache, confusion, or fainting, potentially leading to unconsciousness or death if exposure continues. CO2, being denser than air, tends to collect in low-lying areas, basements, or behind equipment, making proper ventilation and gas monitoring essential. Fire and explosion aren’t typical hazards of CO2 itself (CO2 does not support combustion and is used to extinguish fires), and corrosion is not the principal risk in most handling scenarios. Controlling ventilation and monitoring CO2 levels are key to preventing asphyxiation.