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Question

In what ratio does sulphur and oxygen need to be added in order to increase the yield of SO2 in the contact process?


A

1:2

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B

2:1

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C

3:2

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D

4:3

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Solution

The correct option is A

1:2


In the first stage of the contact process, sulphur is burnt to form SO2. Here, the ratio of sulphur to oxygen is 1:2 where excess oxygen increases the yield of SO2.


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