Which of the following is a characteristic of hazardous materials in solid state?

• A. Always explosive
• B. Tend to be stable
• C. Can crumble and react
• D. Always non-toxic

Answer: (C)

The choice highlighting that hazardous materials in solid state can crumble and react is particularly significant because many hazardous solids are brittle or have specific conditions under which they can break down or decompose. This crumbling can expose reactive surfaces or create dust that can become airborne, leading to inhalation hazards or further chemical reactions.

For solid hazardous materials, their stability can vary widely depending on their chemical composition and environmental conditions. While some solids might indeed be stable, many can transition to more reactive forms when physically disrupted. Thus, the behavior of solid forms of hazardous materials is critical to understand, as their physical state can influence their potential risks.

The other responses do not accurately reflect the characteristics of hazardous materials. Not all solids are explosive, and while some may be stable, it is not a universal trait. Additionally, the notion that solid hazardous materials are always non-toxic is misleading, as many can pose significant health risks regardless of their physical state.