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Question
Pick out the wrong statement?
Options:
A .  Fluxing material like lime is added in clay to reduce the vitrification temperature
B .  Main constituents of clay are alumina and silica
C .  Addition of sand in ceramic materials makes it non-plastic, increases its fusion point and reduces its shrinkage on burning
D .  Vitrification of fireclay material is done to increase its porosity
Answer: Option D
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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