Chlorine is described as being which of the following hazards?

• A. Very toxic and non-corrosive
• B. Inert
• C. Non-toxic
• D. Very corrosive, toxic and aggressive

Answer: (D)

Hazards of chlorine include being highly toxic, highly corrosive, and highly reactive. Chlorine gas readily irritates and damages the respiratory tract, eyes, and skin, and inhalation can lead to serious injury or death. It also reacts with water and organic material to form acids (like hydrochloric acid and hypochlorous acid), which burn and corrode tissues, metals, and many materials. This combination—toxicity plus corrosiveness plus aggressive reactivity—captures its dangerous nature. The other statements mischaracterize chlorine: it is not inert, not non-toxic, and not non-corrosive.