A student was given a mixture of sulphur and iron filings. He was told to heat it and observe it. What will be the colour of the compound formed?

When two substances or elements are heated together, they usually react to generate a new substance. When heated in this situation, iron and sulphur often react and combine directly or undergo synthesis.

Fe is the symbol for the metal iron. Iron has a 26th atomic number. It belongs to the first transition series and group eight. It is an element that is present in the crust of the earth. It ranks as the fourth most prevalent element in the crust of the planet. It includes two plus two (+2) and plus three (+3) valances. Small bits of iron make up iron fillings.

Sulfur is an atomic number 16 non-metal belonging to group 16. Sulfur atoms form a cyclic octatomic structure, which comprises eight sulphate atoms, under normal circumstances.
Iron sulphide is created when sulphur and iron filings are heated together. Typically, it is black in colour.
As a result, it was noted that the chemical created would be black in colour and be iron sulphide.

Hence, the correct answer is option B.