Practice question

Why are oxidising substances (5.1) and flammable liquids (3) commonly treated as an incompatible pair on a package vehicle?

  1. Because oxidizers can intensify a fire if flammable liquid packaging fails
  2. Because Class 3 always freezes Class 5.1
  3. Because ADR bans all Class 5.1 from roads
  4. Because their UN numbers are always identical

Answer: A — Because oxidizers can intensify a fire if flammable liquid packaging fails

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