Class 7 placards can be which colors?

Answer: C — White or yellow/white

Class 7 placards pertain to radioactive materials, and it is essential that they are clearly identifiable to ensure safety and appropriate handling during transportation. The correct color scheme for Class 7 placards is specifically white with distinctive yellow and white markings. This design helps convey important information regarding the presence of radioactive materials and is part of the international standards established for the safe transport of hazardous materials. The choice of colors facilitates quick recognition and understanding among individuals who may encounter these materials, such as emergency responders or transportation personnel. It is vital that any hazardous materials are conveyed with clarity to minimize risks during transit, and the yellow and white color combination is widely recognized and standardized for this class of substances.