Mass Transfer When the solvent dissolves very little of solute, then Very small quantity of solvent is required Large quantity of solvent is required to extract the solute Solvent of low freezing point should be used Solvent of low latent heat of vaporisation should be used Very small quantity of solvent is required Large quantity of solvent is required to extract the solute Solvent of low freezing point should be used Solvent of low latent heat of vaporisation should be used ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The binary diffusivity in gases and liquids vary respectively as T3/2 and T 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 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Molecular diffusion is caused by the Potential energy of the molecules Thermal energy of the molecules Activation energy of the molecules Transfer of molecules from low concentration to high concentration region Potential energy of the molecules Thermal energy of the molecules Activation energy of the molecules Transfer of molecules from low concentration to high concentration region ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following liquid-vapor contacting devices provides maximum contact surface area for a particular duty? Randomly packed column Wetted wall column Bubble cap column Sieve plate column Randomly packed column Wetted wall column Bubble cap column Sieve plate column ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During drying of a solid, the critical moisture content increases with Increased drying rate Both B and C Increased thickness of the solid Decreased drying rate Increased drying rate Both B and C Increased thickness of the solid Decreased drying rate ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The feed to fractionating column is changed from saturated vapour to saturated liquid. If the separation and reflux ratio remains unchanged, the number of ideal stages will Depend on saturated boiling point; may increase or decrease Remains same Increase Decrease Depend on saturated boiling point; may increase or decrease Remains same Increase Decrease ANSWER DOWNLOAD EXAMIANS APP
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