Class 8 needs to be segregated from what other classes?

• A. Class 2 and Division 5.1
• B. Class 3 and Division 6.1
• C. Class 1 and Division 4.3
• D. Class 9

Answer: (C)

Segregation rules for dangerous goods require keeping incompatible substances apart during transport to prevent dangerous interactions if a package leaks or is damaged. Corrosives (Class 8) can cause severe chemical burns and also react with other materials or degrade packaging. They are kept away from explosives (Class 1) to avoid any scenario where a leak or exposure could influence the stability or initiation of explosives, and from substances in Division 4.3 (water-reactive materials that release flammable gases on contact with water), where a spill could generate dangerous gases or heat that worsens the situation. Because of these specific incompatibilities, Class 8 must be segregated from both Class 1 and Division 4.3, which is why that pairing is the correct choice. Other options involve combinations that do not carry the same strongest incompatibility considerations.