Addition of grog in fireclay brick during its manufacture is advantageous, because it results in_____________________?

Question

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All A., B. and C.

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Less shrinkage in heating, decreased apparent porosity &amp; increased specific gravity

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High strength &amp; thermal spalling resistance

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

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refractories and hence increased rate of production

Question #84279