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Gas Fitter Practice · Question

Which of the following gases is added to natural gas and propane to give it a detectable odour?

Mercaptan is a strong-smelling additive that allows for the detection of otherwise odorless natural gas and propane leaks, improving safety.

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Question: Which of the following gases is added to natural gas and propane to give it a detectable odour?

Answer options:

  • Carbon monoxide ✅ Mercaptan
  • Sulphur dioxide
  • Hydrogen sulfide

Correct answer: Mercaptan

Explanation: Mercaptan is a strong-smelling additive that allows for the detection of otherwise odorless natural gas and propane leaks, improving safety.

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