Which item is NOT an example of class 7 radioactive materials?

Which item is NOT an example of class 7 radioactive materials?

• A. Nuclear waste, radioactive medical materials, and X-ray equipment
• B. Household cleaning products
• C. Uranium ore
• D. Smoke detectors containing americium

Answer: (B)

Class 7 covers materials that emit ionizing radiation or contain radioactive substances. Items like nuclear waste, radioactive medical materials, and X-ray equipment are included because they involve sources of radiation. Uranium ore is radioactive itself, so it fits as well. Smoke detectors containing americium use a small, sealed radioactive source and are classified as Class 7 for safety and regulatory reasons. Household cleaning products, on the other hand, do not contain radioactive material and do not emit radiation, so they are not in Class 7.

Class 7 covers materials that emit ionizing radiation or contain radioactive substances. Items like nuclear waste, radioactive medical materials, and X-ray equipment are included because they involve sources of radiation. Uranium ore is radioactive itself, so it fits as well. Smoke detectors containing americium use a small, sealed radioactive source and are classified as Class 7 for safety and regulatory reasons. Household cleaning products, on the other hand, do not contain radioactive material and do not emit radiation, so they are not in Class 7.