Question 2250 Deck General

The correct answer is C) Nonane. Nonane is considered a noxious liquid substance for regulatory purposes, particularly under the International Convention for the Prevention of Pollution from Ships (MARPOL) and the US Coast Guard's regulations on the carriage of hazardous materials. Noxious liquid substances are those that, if discharged into the sea from tank cleaning or deballasting operations, are deemed to present a major hazard to either marine resources or human health. The other options, while potentially hazardous, are not specifically classified as noxious liquid substances under these regulations. Formaldehyde (>50%), methyl ethyl ketone, and molten sulfur have different regulatory classifications and requirements.