With increase in the density of silica refractories, its_______________?
Correct answer: C. Both A. and B.
- A. Resistance to slag attack increases
- B. Spalling resistance reduces
- C. Both A. and B.
- D. Neither A. nor B.
Explanation
Greater density improves resistance to slag penetration and attack, but it reduces the ability of silica refractories to accommodate thermal stresses, lowering spalling resistance. Thus both statements are correct.
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