Mass Transfer During constant rate drying period, vaporisation rate per unit drying surface area Does not change with time Does not affect the moisture content of the wet solid Increases with time Decreases with time Does not change with time Does not affect the moisture content of the wet solid Increases with time Decreases with time ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Steady state temperature reached by a small amount of liquid evaporating into a large amount of unsaturated vapour-gas mixture is called the __________ temperature. Adiabatic saturation Dry-bulb Wet-bulb Dew point Adiabatic saturation Dry-bulb Wet-bulb Dew point ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Penetration theory relates the average mass transfer co-efficient (K) with diffusivity (D) as K ∝ D1.5 K ∝ √D K ∝ D2 K ∝ D K ∝ D1.5 K ∝ √D K ∝ D2 K ∝ D ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer A minimum boiling azeotrope is exemplified by Water-isobutyl alcohol Acetone-carbon disulphide None of these Toluene-benzene Water-isobutyl alcohol Acetone-carbon disulphide None of these Toluene-benzene ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Milk is dried usually in a __________ dryer. Tray Spray Freeze Rotary Tray Spray Freeze Rotary ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In liquid extraction, if the selectivity is unity, then Solvent flow rate should be very low No separation will occur Separation of the constituents is the most effective Amount of solvent required will be minimum Solvent flow rate should be very low No separation will occur Separation of the constituents is the most effective Amount of solvent required will be minimum ANSWER DOWNLOAD EXAMIANS APP
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