A. Distillation
B. Evaporation
C. Absorption
D. Liquid extraction
Related Mcqs:
- Extraction of penicillin employs a ________________ extraction column?
A. Centrifugal
B. Packed
C. Plate
D. None of these - Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is, N+2 = 6 log (yin/yout).For 98% recovery of acetone, the number of trays required is/are ?
A. 4
B. 8
C. 9
D. 10 - Tower diameter may be decreased by__________________?
A. Using higher reflux ratio
B. Use of increased tray spacing
C. Increasing the liquid flow rate
D. Increasing the vapour flow rate - The falling rate period in the drying of a solid is characterised by__________________?
A. Increase in rate of drying
B. Increasing temperatures both on the surface and within the solid
C. Decreasing temperatures
D. None of these - Large scale drying of wheat is done in a ________________ dryer?
A. Fluidised bed
B. Spouted bed
C. Tray
D. Vacuum rotary - Design calculation for multiple component distillation is done by_________________?
A. Ponchon-Savarit method
B. McCabe-Thiele method
C. Enthalpy concentration method
D. Tray to tray calculations - Laboratory determination of the diffusivity of vapor is done by __________________ method?
A. Wetted wall column
B. Gilliland’s
C. Winkelmann’s
D. Wike’s - Leaching of coffee from coffee beans is done by___________________?
A. Hot water
B. Hexane
C. Lime water
D. Dilute H2SO4 (hot) - Deaeration (removal of O2) of water is done by_________________?
A. Rectification
B. Absorption
C. Ion-exchange
D. Adsorption - Leaching of sugar from sugar beets is done by___________________?
A. Hot water
B. Hexane
C. Dilute H2SO4
D. Lime water
