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Safety equipmentQuestion 48 of 352

Which kind of extinguisher is not accepted as required equipment?

  1. One with toxic vaporizing liquid such as carbon tetrachloride
  2. One with dry chemical powder
  3. One with a pressure gauge
  4. One with a 5-B rating
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Correct answer: One with toxic vaporizing liquid such as carbon tetrachloride

Extinguishers that use toxic vaporizing liquids are not accepted.

Source: US Code of Federal Regulations (eCFR), 33 CFR Part 175: Equipment Requirements, § 175.310 Portable fire extinguishers and semi-portable fire extinguishing systems

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Questions last reviewed: 18 October 2026