Practice question

Why can using water on an unknown hazmat fire be dangerous?

  1. Water always makes every hazmat fire safer
  2. Some materials react with water or spread contamination
  3. Water cancels placards
  4. Water identifies the shipping name

Answer: B — Some materials react with water or spread contamination

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Practice more: Pennsylvania CDL HazMat Practice Questions - Pennsylvania CDL Hazardous Materials Endorsement Test Exam →