What are the three types of contaminants?

What are the three types of contaminants?

• A. Physical, chemical, radiological
• B. Biological, chemical, nutritional
• C. Physical, biological, radiological
• D. Physical, biological, and chemical

Answer: (C)

Contaminants are grouped into three broad types that cover the main ways they can affect safety: physical, biological, and radiological. Physical contaminants are tangible materials like dust, dirt, hair, rust, glass—things you can see or feel that can contaminate surfaces or products. Biological contaminants include microorganisms such as bacteria, viruses, and fungi, which can cause illness or spoilage. Radiological contaminants involve radioactive materials that emit radiation and require specialized monitoring and containment. This option is best because it includes three distinct categories that address different hazard sources, including the specific and separate category of radiological contaminants. The other sets mix in or omit essential categories (for example, substituting nutritional for a contaminant type or leaving out radiological or biological), which would not fully capture the common framework for identifying and controlling contaminants in many safety contexts.

Contaminants are grouped into three broad types that cover the main ways they can affect safety: physical, biological, and radiological. Physical contaminants are tangible materials like dust, dirt, hair, rust, glass—things you can see or feel that can contaminate surfaces or products. Biological contaminants include microorganisms such as bacteria, viruses, and fungi, which can cause illness or spoilage. Radiological contaminants involve radioactive materials that emit radiation and require specialized monitoring and containment.

This option is best because it includes three distinct categories that address different hazard sources, including the specific and separate category of radiological contaminants. The other sets mix in or omit essential categories (for example, substituting nutritional for a contaminant type or leaving out radiological or biological), which would not fully capture the common framework for identifying and controlling contaminants in many safety contexts.