Question

A magnet is repeatedly moved closely over a mixture of iron powder and sulphur powder.Which of the following statements is false?

A)Iron powder gets attracted towards magnet

B)Sulphur powder is left behind

C)Black Fes will be formed

D)Iron and sulphur is separated

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Answer 1

The false statement is option (c) Black FeS will be formed.

• When a magnet is moved over a mixture of iron powder and sulfur powder the iron fillings get magnetized under the influence of the magnetic field of the magnet.
• This leads to the attraction of iron powder towards magnets as iron is a ferromagnetic substance. So option (A) is true.
• Iron and sulfur are mixed. There is no chemical bonding between them so when a magnet is repeatedly moved over the mixture iron and sulfur are separated. So options (B) and (D) are true.
• Option (c) is false. As there is no chemical reaction between iron and sulfur. So No FeS is formed
• FeS or iron sulfide is formed when heat is applied to the mixture.
• The reaction is as follows-

(heat)

Fe + S --------> FeS

Hence, The false statement is option (c) Black FeS will be formed.

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Answer 2

Answer: The answer is option c.

Option C is the false statement. Black FeS will be formed.

Explanation:

• Under the influence of the magnet's magnetic field, the iron fillings in the mixture of iron powder and Sulphur powder get magnetized.
• This occurs when the magnet is moved over the mixture.
• Due to the fact that iron is a ferromagnetic substance, this results in the attraction of iron powder towards magnets. Therefore, option (A) is correct.
• Iron and Sulphur are combined in this mixture.
• Because there is no chemical interaction between them, iron and Sulphur.
• They are able to be separated from one another when a magnet is repeatedly dragged over the combination.
• Therefore, choices (B) and (D) are correct.
• Owing to the fact that iron and Sulphur do not interact chemically in any way. So there is no formation of FeS.
• When heat is applied to the combination, a compound known as iron sulphide, or FeS, is produced.
• Option C is incorrect.

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