Chemical Engineering Basics In radiative heat transfer, a grey surface is the one, which has Zero reflectivity Emissivity independent of wavelength Grey appearance to the eye Equal brightness in all directions Zero reflectivity Emissivity independent of wavelength Grey appearance to the eye Equal brightness in all directions ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Air refrigeration cycle is used in the air crafts, because of Its higher co-efficient of performance (COP) Its high heat transfer rate Low temperature encountered at high altitude Its low unit weight per ton of refrigeration Its higher co-efficient of performance (COP) Its high heat transfer rate Low temperature encountered at high altitude Its low unit weight per ton of refrigeration ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Coke is added in the blast furnace to Increase the fluidity of slag Reduce & melt the iron ore None of these Remove sulphur & phosphorus from molten metal Increase the fluidity of slag Reduce & melt the iron ore None of these Remove sulphur & phosphorus from molten metal ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Deformation band is absent in materials having __________ lattice crystal structure. Hcp None of these Bcc Fcc Hcp None of these Bcc Fcc ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Source of heat supply in a cupola is Lumpy coal Charcoal Pulverised coal Coke Lumpy coal Charcoal Pulverised coal Coke ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Rain drops falling through atmospheric air attain limited terminal velocity, because of Upward thrust due to air Viscous force exerted by air Force of gravity Surface tension effects of water Upward thrust due to air Viscous force exerted by air Force of gravity Surface tension effects of water ANSWER DOWNLOAD EXAMIANS APP
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