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Fireclay refractories | |
A. | are not resistant to the action of basic slags. [Wrong Answer] |
B. | combine with salts (e.g. chlorides sulphates etc.) & bases (e.g. lime, magnesia etc.) forming fusible aluminates silicates etc. [Wrong Answer] |
C. | shrink during firing [Wrong Answer] |
D. | all (a), (b) and (c) [Correct Answer] |