Mass Transfer The mass transfer co-efficient for a solid sphere of radius 'a' dissolving in a large volume of quiescent liquid, in which D is the diffusivity of solute, is D/a D/2a Dependent on the Reynolds number Proportional to √D D/a D/2a Dependent on the Reynolds number Proportional to √D ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Use of raschig rings in place of crushed stones as packing in packed beds (other things being same) Increases pressure drop, decreases surface area Decreases pressure drop, increases surface area Increases pressure drop, increases surface area Decreases pressure drop, decreases surface area Increases pressure drop, decreases surface area Decreases pressure drop, increases surface area Increases pressure drop, increases surface area Decreases pressure drop, decreases surface area ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Separation of two volatile liquids by distillation makes use of their Relative volatility Solubility Selectivity Density difference Relative volatility Solubility Selectivity Density difference ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At 750°K and 1 atm, the approximate value of Schmidt number for air is 0.01 0.1 10 1 0.01 0.1 10 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The binary diffusivity in gases and liquids vary respectively as T3/2 and T T and T3/2 √T and T3/2 T3/2 and √T T3/2 and T T and T3/2 √T and T3/2 T3/2 and √T ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In physical terms, Schmidt number means Mass diffusivity/thermal diffusivity Thermal diffusivity/momentum diffusivity Thermal diffusivity/mass diffusivity Momentum diffusivity/mass diffusivity Mass diffusivity/thermal diffusivity Thermal diffusivity/momentum diffusivity Thermal diffusivity/mass diffusivity Momentum diffusivity/mass diffusivity ANSWER DOWNLOAD EXAMIANS APP
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