Page No. 255
Which of the following is not a high alumina refractory material ?
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Which is not a natural insulating material ?
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Magnesite bricks have poor resistance to attack by _____________ slag?
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______________ bricks should not be used in oxidising atmosphere?
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With decrease in porosity, the ______________ of the refractories decreases?
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Hot blast main (carrying air at 1000°C) in blast furnace are lined with ______________ bricks?
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The maximum linear expansion of silica bricks during firing is about ______________ percent?
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Dilatometer is used for the determination of ______________ of refractories?
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Highest melting (m.p = 3070°C) oxide refractory is__________________?
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