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Gas Fitter Practice · Question

What is the characteristic odorant added to natural gas and propane to detect leaks?

Ethyl mercaptan is a strong-smelling compound added to otherwise odorless gases for safety.

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Question: What is the characteristic odorant added to natural gas and propane to detect leaks?

Answer options:

  • Sulfur dioxide
  • Methane ✅ Ethyl mercaptan
  • Propane

Correct answer: Ethyl mercaptan

Explanation: Ethyl mercaptan is a strong-smelling compound added to otherwise odorless gases for safety.

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