Chemical Engineering Basics If a heat transfer surface is pock-marked with a number of cavities, then as compared to a smooth surface the heat transfer by __________ will not increase. Convection Nucleate boiling Conduction Radiation Convection Nucleate boiling Conduction Radiation ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Rain drops falling through atmospheric air attain limited terminal velocity, because of Surface tension effects of water Force of gravity Upward thrust due to air Viscous force exerted by air Surface tension effects of water Force of gravity Upward thrust due to air Viscous force exerted by air ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Materials having __________ lattice structure are usually the most ductile. Body centred cubic (bcc) None of these Face centred cubic (fcc) Hexagonal close packed (hcp) Body centred cubic (bcc) None of these Face centred cubic (fcc) Hexagonal close packed (hcp) ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Lime contains about 90% CaO. Percentage CaO present in limestone is about 70 80 25 50 70 80 25 50 ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics Which of the following welding processes employs the highest welding temperature ? Gas welding Arc welding Resistance welding Thermit welding Gas welding Arc welding Resistance welding Thermit welding ANSWER DOWNLOAD EXAMIANS APP
Chemical Engineering Basics At the point of boundary layer separation in fluid flow, the Shear stress is maximum Shear stress is zero Density variation is maximum Velocity gradient is flat Shear stress is maximum Shear stress is zero Density variation is maximum Velocity gradient is flat ANSWER DOWNLOAD EXAMIANS APP
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