What color is carbon monoxide?

Carbon monoxide is a colorless gas, meaning that it does not have any visible color when present in the air. This characteristic makes it particularly dangerous because it is hard to detect without specialized equipment, leading to potential poisoning risks in enclosed spaces. The fact that it is colorless is a key identifying feature of carbon monoxide and is essential knowledge, especially in environments where the gas might accumulate.

Understanding that carbon monoxide is colorless helps emphasize the importance of using carbon monoxide detectors in homes and workplaces to provide early warning of its presence. This awareness is crucial for safety and prevention measures against carbon monoxide poisoning. While the other options suggest colors associated with different substances, they do not accurately reflect the properties of carbon monoxide, reaffirming the uniqueness of its colorless nature.