Question

to produce black colour iron fillings are dissolved in​

Answer 1

Answer:

Iron filings are very small pieces of iron that look like a light powder. They are very often used in science demonstrations to show the direction of a magnetic field

Explanation:

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Answer 2

Explanation:

Iron filings are soild as they don't dissolve, but if iron fillings is dropped in the sulpher powder and heated strongly, it gives black color