In which stage of contact process the catalysts are used?

Burner

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Converter

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Absorption Tower

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Dilution Tank

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Solution

The correct option is B
Converter

The second step in the production of sulphuric acid takes place in the converter.

2SO₂(g) + O₂(g) → 2SO₃(g)
High pressure and low-temperature conditions would increase the yield of this reaction.A catalyst will increase the rate of a reaction, but not the yield.

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