Which of the following can be used to synthesize $S O_{2}$ ?

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Solution

The correct options are
A

B

C

D

Sulphide ores are strongly heated in the presence of air to convert them into their corresponding oxide forms.
You might recall that this process is called roasting.
$4 F e S_{2} + 11 O_{2} \to 2 F e_{2} O_{3} + 8 S O_{2}$
$4 F e S + 7 O_{2} \to 2 F e_{2} O_{3} + 4 S O_{2}$

When hydrogen sulphide is burnt in air, sulphur dioxide and water are formed
$2 H_{2} S + 3 O_{2} \to 2 H_{2} O + 2 S O_{2}$

Sulphur dioxide can also be formed by burning sulphur in air:
$S + O_{2} \to S O_{2}$

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