Question

A student mixed a small amount of iron filings and sulphur powder in a dish. He could not affect the separation by simple hand-picking. Which liquid will you suggest to affect the separation?

1) Carbon disulphide
2) Cold water
3) Boiling water
4) Kerosene​

Answer 1

Answer:

Explanation:

carbon disulphide

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Answer 2

The liquid you will suggest affecting the separation is 1) Carbon disulphide

• The mixture of iron filings and sulphur powder can be separated by magnetic separation but the separation will get affected. To separate the mixture properly you can use Carbon disulphide.
• Sulphur powder is soluble in carbon disulphide while iron filings are not. When carbon disulphide is poured into the mixture sulphur will solubilise. Later, sulphur can be recovered by filtration followed by evaporation.
• Hence, this way both iron filings and sulphur will get separated.