When mixture of iron and sulphur is heated what happens first iron starts melting or sulphur melts first or mixture becomes red hot?
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Answer:
Red glow
Explanation:
Iron on reacting with sulphur forms iron sulphide which releases heat in the form of red glow.
When iron sulphide is formed ,iron sulphide is left in the form of a black substance
Fe+S --->FeS
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