Chemical Engineering Basics In radiative heat transfer, a grey surface is the one, which has Equal brightness in all directions Grey appearance to the eye Zero reflectivity Emissivity independent of wavelength Equal brightness in all directions Grey appearance to the eye Zero reflectivity Emissivity independent of wavelength ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Consideration of the creep is the most important in case of the Piston of an I. C. engine Cycle chain Flywheel of steam engine Blades of gas turbine Piston of an I. C. engine Cycle chain Flywheel of steam engine Blades of gas turbine ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Scaling occurs in boiler tubes due to the fact that, the solubility of Ca(OH)₂ __________ with increasing temperature. Shows inversion of solubility Decreases Increases None of these Shows inversion of solubility Decreases Increases None of these ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Source of heat supply in a cupola is Coke Lumpy coal Pulverised coal Charcoal Coke Lumpy coal Pulverised coal Charcoal ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are Cobalt, chromium & tungsten Cobalt, zirconium & molybdenum Cobalt, chromium & nickel Molybdenun, tungsten & chromium Cobalt, chromium & tungsten Cobalt, zirconium & molybdenum Cobalt, chromium & nickel Molybdenun, tungsten & chromium ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics In "Imperial Smelting Process" for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following : Jet of water at high pressure Blast of air Rain of molten lead Mixture of water and air Jet of water at high pressure Blast of air Rain of molten lead Mixture of water and air ANSWER DOWNLOAD EXAMIANS APP
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