Which hazard class is represented by the placard illustration labelled 'Radioactives'?

Which hazard class is represented by the placard illustration labelled 'Radioactives'?

• A. Dangerous when wet
• B. Radioactives
• C. Poison gases
• D. Corrosives

Answer: (B)

Recognizing hazard class by placard: the label “Radioactives” paired with the radiation symbol clearly identifies radioactive materials, which are assigned to hazard class seven. That distinctive trefoil symbol is unique to radioactivity and signals ionizing radiation hazards, requiring specific safety measures like shielding, distance, and exposure monitoring. The other options point to different hazard classes with their own symbols and wording (for example, substances that are dangerous when wet, toxic gases, or corrosives), so they would not use the radioactive label or symbol.

Recognizing hazard class by placard: the label “Radioactives” paired with the radiation symbol clearly identifies radioactive materials, which are assigned to hazard class seven. That distinctive trefoil symbol is unique to radioactivity and signals ionizing radiation hazards, requiring specific safety measures like shielding, distance, and exposure monitoring. The other options point to different hazard classes with their own symbols and wording (for example, substances that are dangerous when wet, toxic gases, or corrosives), so they would not use the radioactive label or symbol.