Which liquid is listed under toxic materials as a toxic liquid?

• A. Ethanol
• B. Water
• C. Methanol
• D. Chloroform

Answer: (D)

Understanding how liquids are categorized by hazard helps explain this. A toxic liquid is one that can cause harmful effects through inhalation, ingestion, or skin contact even at relatively low exposures. Chloroform fits this pattern well: its vapors and its liquid form can be harmful, with effects ranging from dizziness and nausea to more serious damage to the liver and kidneys with enough exposure, and it’s treated as a substance that requires careful handling in a toxic materials category. Water isn’t toxic at all, so it wouldn’t be listed there. Ethanol is mainly treated as a flammable liquid in many safety systems, with toxicity considered but not the primary hazard group. Methanol is indeed toxic, but the specific toxic-liquids list in many lab safety programs highlights chloroform as a classic example of a toxic liquid, which is why it’s identified as the correct choice.