Which of the following is a characteristic of Methane gas?
Official USCG Answer & Rule Citation
Correct Answer: Option C — it is odorless
Methane (CH4) is a colorless, highly flammable gas that is entirely odorless in its natural state. Odorants are frequently added to commercial utility methane, but pure marine LNG boil-off gas remains odorless, requiring detection sensors.
100% Free & Open Access — No daily limits, paywalls, or gated answers on BrightMariner.