Steel tower used for the storage of oleum________________?
Correct answer: B. Need not be lined
- A. Is lined with lead
- B. Need not be lined
- C. Is lined with rubber
- D. Is lined with acid-proof bricks
Explanation
Oleum can be stored in a suitably designed carbon-steel tower without a lead, rubber or brick lining because concentrated sulphuric acid forms a protective condition on steel when water is absent. Dilution or moisture would greatly increase corrosion risk.
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