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Infection Control · single question

Regarding compressed oxygen used in the dental office, all of the following are correct EXCEPT:

  1. Stored in a green tank
  2. It is a fuel
  3. It is flammable (supports combustion)
  4. It is compressed air/gas
Show answer and explanation

Correct answer: B. It is a fuel

  • A. Oxygen tanks are conventionally color-coded green in the US, so this is a true statement (not the exception).
  • B. Correct (the exception/false statement). Oxygen is NOT itself a fuel — it is an oxidizer that supports combustion of other fuels, a key distinction.
  • C. Oxygen does support/accelerate combustion, making this statement true.
  • D. Oxygen is stored as a compressed gas, making this statement true.

Note: Oxygen supports combustion (oxidizer) but is not itself a fuel — option B is the incorrect statement.

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