What are the routes of entry for a hazmat?

• A. Evaporation, diffusion, convection, radiation
• B. Inhalation, ingestion, absorption, injection
• C. Contact with skin only
• D. None of the above

Answer: (B)

Routes of entry are how a hazmat substance can get into the body. The best answer lists inhalation, ingestion, absorption, and injection. Inhalation means breathing in vapors, gases, or aerosols that reach the lungs, so protection focuses on respirators and air handling. Ingestion happens when contaminated hands or materials are swallowed, making hygiene and not eating or drinking in contaminated areas crucial. Absorption is the substance passing through skin or mucous membranes, so protective clothing, gloves, and eye protection are key. Injection, though less common, occurs through puncture wounds or needle sticks and requires proper barrier methods and prompt treatment.

The other options don’t fit because they describe environmental processes (how hazmat moves or affects surroundings) or only a single route (skin contact), and one choice asserts none of the above, which isn’t true since these routes do exist.