Grog__________________?
Correct answer: D. All A., B. and C.
- A. Contains both alumina and silica
- B. Is crushed firebrick
- C. Is a non-plastic material
- D. All A., B. and C.
Explanation
Grog is calcined and crushed refractory material, commonly crushed firebrick; it is non-plastic and mainly contains alumina and silica. Hence all three descriptions apply.
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