Chemical Engineering MCQs

6108 MCQs  (Page 170 of 611)

Attempt Chemical Engineering Quiz
Minimum reflux ratio in a distillation column results in_____________________?
A. Optimum number of trays
B. Minimum reboiler size
C. Maximum condenser size
D. Minimum number of trays
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The individual mass transfer co-efficients (moles/m2s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ?
A. Liquid side
B. Gas side
C. Interfacial
D. Both liquid and gas side
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In case of unsaturated air_________________?
A. Dew point < wet bulb temperature
B. Wet bulb temperature < dry bulb temperature
C. Both a. and b.
D. Neither a. not b.
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_____________ extractor is used for the concentration of radioactive nuclear waste?
A. Pulsed column
B. Sieve plate
C. Mixer-settler
D. Bollman
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Use of packed towers for distillation is generally limited to the__________________?
A. Small sizes
B. Multi-component distillation
C. High pressure operation
D. Vacuum distillation
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Paper industry employs _____________ driers ?
A. Cylinder
B. Rotary
C. Spray
D. Fluidised bed
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Laboratory determination of the diffusivity of vapor is done by ______________ method?
A. Wetted wall column
B. Gilliland’s
C. Winkelmann’s
D. Wike’s
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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
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Drying of a wet solid under constant drying conditions means the exposure of the wet solid to the air of constant______________________?
A. Humidity
B. Velocity
C. Temperature
D. All a., b. & c.
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In liquid extraction, if the selectivity is unity, then__________________?
A. Separation of the constituents is the most effective
B. No separation will occur
C. Amount of solvent required will be minimum
D. Solvent flow rate should be very low
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Word of the Day
26 Jul
Simultaneously
at the same time.
ایک ہی وقت میں، ایک ساتھ، بیک وقت

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