One of the mysteries of the English language finally explained.
A colourless toxic gas formed in many reactions in which nitric acid is reduced. It reacts immediately with oxygen to form nitrogen dioxide.
Chemical formula: NOAlso called nitric oxide
- ‘The airliner descends on Tehran through a noxious haze of carbon and nitrogen monoxide, ozone, and sulfur.’
- ‘He said burning insulated copper cable, plastics and tyres released into the air poisonous gasses like nitrogen dioxide, nitrogen monoxide and sulphur dioxide.’
- ‘He said there would be 42 per cent less nitrogen monoxide, 40 per cent less sulphur dioxide and 26 percent less carbon dioxide.’
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