The following substances burn in oxygen, and Mars radiates around to form black solid () A. Charcoal B. sulphur C. iron wire D. red phosphorus

The following substances burn in oxygen, and Mars radiates around to form black solid () A. Charcoal B. sulphur C. iron wire D. red phosphorus

A. Charcoal burns in oxygen, emits white light, and produces a gas that can make clear lime water turbid, so the option is wrong. B. sulfur burns in oxygen, emits a bright blue purple flame, and produces a gas with pungent odor, so the option is wrong. C. iron wire burns violently in oxygen, sparks radiate, and produces a black solid, so the option is correct Burning in oxygen produces a lot of white smoke and a kind of white solid, so the option is wrong