The correct procedure for heating a mixture of iron fillings and sulphur powder is:
A
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B
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C
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D
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Solution
The correct option is A
Explanation for correct option:
(a) China dish
China dish is used for heating the mixture of iron filings and sulphur powder this is because during this reaction a lot of heat is produced and only a china dish can withstand it without reacting.
Explanation for incorrect options:
(b) Copper dish
A copper dish cannot be used for preparing the mixture because when the heat is produced, copper may react with the mixture of iron filings and sulphur powder to give a different product.
(c) Watch glass
Watch glass may not be able to withstand the heat produced in the reaction and break. Therefore, watch glass cannot be used.
(d) Petri dish
Petri dish is not suitable as it might also break or change the product of the reaction to be produced.
