Question

7.
When a mixture of iron fillings and sulphur powder is heated, we observe that:
(a) it becomes black in colour
(b) it becomes yellow in colour
(C) no effect
(d) it turns colourless​

Answer 1

Answer:

it is b

Explanation:

When sulphur and iron filings are mixed and heated they form FeS (ferrous sulphide). The FeS is in black colour.

Fe+S⟶FeS

                      Black colour compound.

So, the correct option is (B)

Answer 2

Answer:

(a). it becomes black in colour.

Explanation:

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