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

B. Less addition of water to get a workable plasticity & lesser time required for drying the raw

C. All A., B. and C.

D. High strength & thermal spalling resistance

E. ractories and hence increased rate of production

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