Which of the following is a non-hazardous waste example?

• A. Spent solvents
• B. Batteries
• C. Aerosol can
• D. Paper

Answer: (D)

Distinguishing hazardous from non-hazardous waste depends on whether the waste has properties or contents that require special handling. Paper is non-hazardous because it’s inert and doesn’t exhibit hazardous characteristics like ignitability, toxicity, corrosivity, or reactivity, so it’s commonly recycled and treated as standard waste. In contrast, spent solvents are flammable and toxic, batteries contain heavy metals, and aerosol cans can be pressurized and contain solvents or propellants—conditions that classify them as hazardous and call for regulated disposal. So paper stands out as the non-hazardous example.