In SO3 absorber (Contact Process), packing material used is of________________?
Correct answer: B. Chemical stoneware
- A. Cast iron
- B. Chemical stoneware
- C. Karbate
- D. Mild steel
Explanation
Chemical stoneware is resistant to concentrated sulphuric acid and is therefore used as packing in the SO₃ absorption tower. Ordinary mild steel and cast iron would be attacked by the acid.
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