Q.

Pick up the correct statement from the following:

A. The percentage of absorption for firebricks varies from 5 to 10
B. The percentage of silica in silica bricks is to the extent of about 95 to 97 percent
C. Roughly 1 to 2 percent of lime in silica bricks is added to act as binding material
D. All the above
Answer» D. All the above
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