Practice question

Two corrosive liquids are Class 8, but one is PG I and one is PG III. What is key?

  1. PG III is always more dangerous
  2. Packing groups describe axle weight
  3. PG I generally indicates greater danger than PG III
  4. Class 8 never uses packing groups

Answer: C — PG I generally indicates greater danger than PG III

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