OHST Practice Exam

Which property indicates that waste may ignite easily under certain conditions?

1. Corrosivity

2. Reactivity

3. Ignitability

4. Toxicity

The correct answer is: Ignitability

The property that indicates that waste may ignite easily under certain conditions is ignitability. This characteristic is important in waste management as it describes materials that can catch fire and burn under standard temperature and pressure conditions or when exposed to a spark or open flame. Ignitable wastes can include solids, liquids, and even certain gases and are typically characterized by having a flash point of less than 60 degrees Celsius (140 degrees Fahrenheit). Understanding ignitability is crucial for ensuring safe handling and disposal of hazardous wastes. By recognizing and classifying ignitable materials, organizations can implement appropriate safety measures to prevent accidental fires and promote workplace safety. In contrast, the other properties listed serve different purposes in waste classification. Corrosivity refers to substances that can chemically destroy or damage materials and living tissues upon contact. Reactivity denotes materials that may undergo hazardous reactions when exposed to certain conditions, like water or air, potentially causing explosions. Toxicity identifies substances that may be harmful or fatal when ingested or absorbed, posing health risks to humans and the environment. While all these properties are vital for hazard identification, ignitability specifically focuses on the ability of a material to ignite and sustain combustion.