Category: Mass Transfer

A. Spouted bed
B. Tray
C. Rotary
D. Truck

A. Number of plates is maximum
B. Overhead product is maximum
C. Both the operating lines coincide with the diagram
D. None of these

A. Less than
B. More than
C. Equal to
D. Either A. or B.; depends on the solid

A. Providing irregular grain size
B. Providing minimum percentage of voids
C. Having maximum possible points of contact
D. None of these

A. Beginning of falling
B. Beginning of constant
C. End of falling
D. None of these

A. Higher molecular weight is adsorbed in preference to a gas of low molecular weight
B. High critical temperature is adsorbed in preference to a gas of low critical temperature
C. Low volatility is adsorbed in preference to a gas of high volatility
D. None of these

A. Azeotropic mixture is to be separated and the final product is miscible with water
B. Liquids decompose, if distilled directly at atmospheric pressure
C. Material cannot be distilled by indirect heating even under low pressure, because of the high
boiling temperature
D. Material to be distilled is thermally unstable or has the tendency to react with other
components associated with it, at the boiling temperature

A. Thermal diffusivity/mass diffusivity
B. Thermal diffusivity/momentum diffusivity
C. Momentum diffusivity/mass diffusivity
D. Mass diffusivity/thermal diffusivity

A. Inverse
B. Exponential
C. Linear
D. Logarithmic

A. Greater than
B. Smaller than
C. Equal to
D. Either A., or B.; depends on the type of packing