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Addition of grog in fireclay brick during its manufacture is advantageous, because it results in | |
A. | less shrinkage in heating, decreased apparent porosity & increased specific gravity. [Wrong Answer] |
B. | high strength & thermal spalling resistance. [Wrong Answer] |
C. | less addition of water to get a workable plasticity & lesser time required for drying the raw refractories and hence increased rate of production. [Wrong Answer] |
D. | all (a), (b) and (c). [Correct Answer] |