WebA mixture of iron filings and sulphur is heated, the colour of the mixture will change (a) black to yellow (b) yellow to black (c) black to brown (d) brown to yellow. Question 20: What is observed when carbon disulphide is added to a mixture of iron filings and sulphur powder taken in a test tube? . (a) iron filings turn red WebMar 30, 2024 · Iron fillings are small pieces of iron. Sulphur is a non-metal of group 16 with atomic number 16. When the conditions are normal, sulphur atoms form a cyclic octatomic structure which contains eight atoms of sulphur. When we heat sulphur and iron filings together, they form iron sulphide. It is usually black in colour.
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