101. Silica bricks have low spalling resistance below 600°C, due to its
102. With increasing alumina content, the fusion point of high alumina refractories
103. Addition of grog in fireclay brick during its manufacture is advantageous, because it results in
104. Tar bonded dolomite bricks
105. Sillimanite is a __________ refractory.
106. Which form of silica has the highest specific gravity?
107. What is Thoria?
108. Resistance to slag attack of a refractory
109. Which of the following impurities reduces the refractoriness of magnesite bricks?
110. With increase in the density of silica refractories, its
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