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Mass Transfer

Mass Transfer
Diameter to height ratio for a rashig ring is

5
0.5
1
2

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Mass Transfer
The dimension of diffusivity is same as that of the

Density
Molal concentration
Kinematic viscosity
Velocity head

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Mass Transfer
Prandtl number for water at 20°C is about

0.7
150
70
7

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Mass Transfer
(NSh/NRe.NSc) is termed in mass transfer operation as the

Thermal diffusivity
Stanton number
Momentum diffusivity
Peclet number

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Mass Transfer
At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbant

Increases
Decreases
Increases exponentially
Remains unchanged

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Mass Transfer
Calcium ammonium nitrate (a fertiliser) is dried in a __________ dryer.

Tray
Rotary
Vacuum
Tunnel

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