A. Constant pressure distillation cannot separate an Azeotropic mixture
B. perature</strong>
C. Flash distillation is practised on wide spread scale in petroleum refinery
D. The relative volatility of a binary mixture at Azeotropic composition is unity
B. The mass diffusivity, the thermal diffusivity and the eddy momentum diffusivity are the same
C. An Azeotropic mixture of two liquids has boiling point higher than either of them, when it
D. ws negative deviation from Raoults Law
E. fusivity
F. NSc = NPr= 1
A. Dew point
B. Wet bulb
D. Neither A nor B
A. Operating
B. Minimum
C. Maximum permissible
A. Ri = (1 Re)/Re
C. Ri = Re/(1 Re)
D. Ri = Re
A. Very high temperature is not needed for the leaching of sugar beet
B. Door classifier can be used for leaching of coarse solids
D. Vegetable seeds can be leached in either of Bollman extractor, Rotocel or Kennedy extractor
A. Liquid
C. Both A. & B.
D. Neither A. nor B.
A. 0.6
B. 0.24
D. 0.72
A. Multi-component distillation is involved
B. Mixture (to be separated) shows positive deviation from ideality
D. Mixture (to be separated) shows negative deviation from ideality
A. Is desirable from point efficiency consideration
B. Reduces the overall pressure drop
D. Results from very low gas velocity
A. Gas
A. K ? D1.5
B. K ??D
D. K ? D2
B. Wetted wall
C. Sieve/perforated tray
D. Bubble cap
A. Raising the temperature
B. Lowering the total pressure
A. Real gases
B. Newtonian liquids
C. Non-Newtonian liquids
A. Non-uniform & low production rate
C. High maintenance cost
D. All a, b & c
B. For NtoG in absorption for dilute mixture
C. Slope of q-line in McCabe-Thiele method
D. For relative volatility
B. 150
C. 70
D. 0.7
A. Inverse
B. Exponential
C. Logarithmic
A. A horizontal line on the humidity chart indicates the temperature changes at constant molal
B. idity
C. When water is cooled from 80 to 70C by exposure to the air with a wet bulb temperature of
D. C, then both the approach & the range would be 10C
E. For unsaturated air-water vapor mixture at atmospheric conditions, the wet bulb temperature
F. p; adiabatic cooling lines are the same
A. Pressure
B. Size of the solid
D. Viscosity of solvent
A. Diffusion
B. Bulk flow
A. Decreases in winter
B. Increases in summer
C. None of these
A. Cold water leaving the tower and the wet bulb temperature of the surrounding air
C. Hot water entering the tower and the wet bulb temperature of the surrounding air
D. None of these
B. -f/(1 f)
C. (f 1)/f
D. (1 f)/f
A. None of these
B. Unity
D. Zero
A. Bubble cap tray towers
B. Agitated vessels
C. Perforated sieve tray towers
A. ?
B. 1
A. Sieve tray
B. Bubble cap
D. Any of these
A. Increases pressure drop, increases surface area
B. Decreases pressure drop, decreases surface area
C. Increases pressure drop, decreases surface area
A. Tunnel
B. Festoon
D. Cylinder
A. Maintaining high critical humidity
B. Maintaining low critical humidity
C. Coating the product with inert material
A. Wet bulb
B. Dry bulb
D. Dew point
C. Pulse
D. Sieve plate
C. #NAME?
B. Both the operating lines coincide with diagonal
C. Both A. and B.
A. Plate
B. Packed
A. Alumina
C. Silica
A. Evaporation
C. Blowdown
D. Entrainment
A. Remain constant
C. Decreases rapidly
D. Increases rapidly
B. 5
C. 100
D. 60
A. Temperature remains unaffected
B. Temperature always increases
D. Operating line always lies above the equilibrium curve
A. Data insufficient
C. Zero
A. LG/m
B. mL/G
C. G/mL
A. Between 100 and 210
C. At > 210.6
A. Bubble plate column
B. Pulse column
C. Packed column (with dumped packing)
B. Non-ideal solution only
C. All liquid solutions
D. Non-volatile solute
A. Boiling point
B. Freezing point
C. Vapour pressure
A. Momentum diffusivity
C. Peclet number
D. Thermal diffusivity
Showing 2151 to 2200 of 8709 mcqs
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