MCQs: Which of the following has the lowest electrical resistivity ?
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MCQs: Refractory castables are used for__________________?
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MCQs: Silicon carbide refractories have very low ___________________?
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MCQs: Carbon refractories are exclusively used in the_________________?
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MCQs: Because of its very high refractoriness of the order of __________ °C, silicon carbide refractories are used in zinc smelting furnace, muffle furnace and for supporting the wares in tunnel kilns ?
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MCQs: Which is the most stable crystalline form of silica at room temperature ?
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MCQs: Which of the following bricks has the most close values of RUL and PCE ?
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MCQs: Roof of a basic open hearth furnace is lined with ______________ bricks?
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MCQs: Chrome magnesite bricks are used in the_________________?
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MCQs: Refractory materials are never used in the construction of _________________?
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MCQs: Graphite or carbon refractories______________________?
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MCQs: Zirconia refractory_________________?
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MCQs: Carbon refractories have very high __________________?
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MCQs: An ideal refractory should have high__________________?
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MCQs: Fusion point of an acidic refractory material is________________?
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MCQs: Segar cones are used for the determination of ____________ of refractories?
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MCQs: Porosity is induced in insulating refractories by adding________________?
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MCQs: Machine moulding of dry mixture of refractories requires a pressure of the order of _____________ kg/cm2?
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MCQs: Carbon bricks are not used in the lining of the_________________?
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MCQs: Grog addition in fireclay during brick manufacture is done to_________________?
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