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Mass Transfer

Mass Transfer
For continuous drying of grannular or crystalline material, the dryer used is the __________ dryer.

Rotary
Tunnel
Tray
None of these

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Mass Transfer
Diffusion co-efficient generally depends upon the temperature, pressure & the nature of the components of the system. Its dimension is not the same as that of the

Kinematic viscosity
Thermal diffusivity
Mass transfer co-efficient
Volumetric diffusivity

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Mass Transfer
Langmuir equation is associated with

Leaching
Steam distillation
Adsorption
Multicomponent absorption

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Mass Transfer
A solid material shows case hardening properties while drying. Which of the following should be controlled to control the drying process?

Humidity of inlet air
Relative humidity of outlet air
Temperature of the solid
Flow rate of inlet air

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Mass Transfer
Make up water is required in a cooling tower to replace the water lost by

Evaporation
Drift
All of these
Blowdown and leakage

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Mass Transfer
Which of the following operations does not involve leaching?

Dissolving sugar from the cells of the beet
Removing nicotine from its water solution by kerosene
Dissolving gold from ores
Dissolving pharmaceutical products from bark or roots

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