A person repeatedly exposed to a chemical over a long period may develop which type of health hazard?

• A. Physiological changes
• B. Chronic health hazard
• C. Acute health hazard
• D. Chemical asphyxia

Answer: (B)

Repeated exposure to a chemical over a long period leads to health effects that develop slowly and may persist after exposure ends. This is described as a chronic health hazard, covering conditions that arise from ongoing exposure such as gradual organ damage, cancers, or sensitization. The key idea is that the harm emerges from long-term contact rather than an immediate reaction, which is why the term chronic health hazard fits best. An acute health hazard, by contrast, involves immediate or short-term effects from a single or brief exposure. Chemical asphyxia refers to a specific mechanism where the chemical interferes with oxygen delivery, not the general pattern of long-term harm from sustained exposure.