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.Management Sciences
Category: Mass Transfer
H2S present in naphtha reformed gas is removed by absorbing with___________________?
A. Ethanolamine
B. K2CO3
C. HCl
D. Vacuum gas oil
Steady state equimolal counter diffusion occurs in case of ____________________?
A. Leaching
B. Absorption
C. Binary phase distillation
D. Liquid-liquid extraction
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.
Dry bulb temperature of the gas is _____________ the wet bulb temperature?
A. Less than
B. More than
C. Equal to
D. None of these
Small dia distillation column can be a _________________________?
A. Packed column
B. Sieve tray
C. Bubble cap
D. Any of these
Reboiler is considered as one theoretical plate, because_____________________?
A. Of the assumption that vapour and liquid leaving the reboiler are in equilibrium
B. Vapour is recycled to the column
C. Reboiler itself contains one plate
D. None of these
Free flowing granular materials can be best dried in a __________________ drier?
A. Rotary
B. Cylinder
C. Drum
D. Freeze
The diffusivity, DAB (for component A diffusing in B) is equal to the diffusivity DBA (for component B diffusing in A) for a binary mixture of________________?
A. Newtonian liquids
B. Non-Newtonian liquids
C. Ideal gases
D. Real gases
The expression, ln(F/W) = ∫xF xW [dx/y* – x)] is_____________________?
A. Differential distillation equation
B. For NtoG in absorption for dilute mixture
C. Slope of q-line in McCabe-Thiele method
D. For relative volatility
The dew point of a saturated gas phase equals the ________________ temperature?
A. Gas
B. Room
C. Wet bulb
D. None of these
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