A. Cost
B. Electrical conductivity
C. Thermal conductivity
D. Fusion point
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Related Mcqs:
- Carborundum used for making crucibles for melting non-ferrous metals is chemically________________?
- A. Silicon carbide B. Silicon nitride C. Crystalline magnesia D. Zirconium sulphate...
- Maximum alumina content in high alumina refractory can be as high as ____________ percent?
- A. 30 B. 50 C. 70 D. 90...
- With increase in the alumina content, the refractoriness of high alumina refractories_________________?
- A. Increases B. Decreases C. Remain same D. May increase or decrease...
- The vapor pressure of a substance, at its melting point, is _____________ in the solid state as compared to that in the liquid state?
- A. Less B. More C. Same D. Either A. or B.; depends on the nature of the substance...
- During a phase change process like sublimation, vaporisation, melting etc., the specific ____________ does not change?
- A. Enthalpy B. Gibbs free energy C. Internal energy D. Entropy...
- Thermal diffusivity of a refractory brick is high, when its ______________ is high?
- A. Density B. Specific heat C. Thermal conductivity D. None of these...
- Ceramic recuperators used for waste heat recovery from high temperature flue gas going out of the furnace is made of ________________?
- A. Fireclay B. Silicon carbide C. Corundum D. Siliceous fireclay...
- The maximum adiabatic flame temperature of fuels in air is ____________ the maximum flame temperature in pure oxygen?
- A. Lower than B. Higher than C. Same as D. Not related to...
- For most salts, the solubility increases with rise in temperature, but the solubility of _______________ is nearly independent of temperature rise?
- A. Sodium chloride B. Sodium carbonate monohydrate C. Anhydrous sodium sulphate D. Hypo...
- The temperature of a gas in a closed container is 27° C. If the temperature of the gas is increased to 300° C, then the pressure exerted is___________________?
- A. Doubled B. Halved C. Trebled D. Unpredictable...
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