Question

The correct procedure of heating iron-sulphur mixture to prepare iron sulphide is (1) heat the powder mixture at the base of the test tube using a blue flame throughout.
(2) heat the iron filings and sulphur mixture in the middle of the test tube using yellow flame throughout.
(3) heat the powder mixture at the top of the test tube using an orange flame throughout.
(4) heat the iron fillings-sulphur mixture at 3/4 quarters of the test tube using a red flame throughout.

Answer 1

Answer:

(1) heat the powder mixture at the base of the test tube using a blue flame throughout.

in all these changes a new compound is formed.

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Answer 2

Answer:

my dear friends the answer will be option a] heat the powder mixture at the base of test tube by using a blue flame throughout . I Hope it will help you bye , bye

Explanation: