Mass Transfer Gaseous diffusivity at atmospheric pressure is of the order of __________ cm²/second. > 10 5 to 10 1 1 to 5 > 10 5 to 10 1 1 to 5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Lewis number, which is important in problems involving simultaneous heat and mass transfer, is the ratio of Mass diffusivity to momentum diffusivity Momentum diffusivity to thermal diffusivity None of these Thermal diffusivity to mass diffusivity Mass diffusivity to momentum diffusivity Momentum diffusivity to thermal diffusivity None of these Thermal diffusivity to mass diffusivity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During drying of a solid, the critical moisture content increases with Increased thickness of the solid Both B and C Increased drying rate Decreased drying rate Increased thickness of the solid Both B and C Increased drying rate Decreased drying rate ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The surface renewal frequency in Danckwerts model of mass transfer is given by (KL: mass transfer co-efficient) KL/DA² KL².DA KL²/DA √(KL².DA) KL/DA² KL².DA KL²/DA √(KL².DA) ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In rectifying section of a continuous distillation column, the Liquid is stripped of high boilers Vapour is enriched with high boilers Vapour is enriched with low boilers None of these Liquid is stripped of high boilers Vapour is enriched with high boilers Vapour is enriched with low boilers None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Boiling point diagram is Affected by pressure Not affected by pressure A plot of temperature vs. vapour composition A plot of temperature vs. liquid composition Affected by pressure Not affected by pressure A plot of temperature vs. vapour composition A plot of temperature vs. liquid composition ANSWER DOWNLOAD EXAMIANS APP
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