______________ bricks should not be used in oxidising atmosphere?
Correct answer: D. Carbon
- A. Tar dolomite
- B. Fireclay
- C. Silica
- D. Carbon
Explanation
Carbon refractories oxidise readily in an oxidising atmosphere, producing CO or CO2 and losing their structure. They are therefore used only where oxygen exposure is controlled, unlike ordinary fireclay and silica bricks.
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