Hexane is also an important solvent by acetone is preferred when the material is wet. Chloroform on the other hand is NOT for edible purposes.

Incrustation leads to all of the mentioned.

Limiting ratio is when the Operating line will meet equilibrium curve. Gas liquid ratio = L/V. When the flow rate of liquid is high, the distance between operating line and equilibrium curve increases.

After incipient fluidization, the pressure briefly decreases. This is because at incipient fluidization, the particles only become loose. They aren’t in contact with each other. They don’t start rising up. Hence, the pressure briefly decreases. Once they start moving up, the pressure increases.

Both the statements are true.

Tubular bowl centrifuges are used for liquid-liquid separation. Tubular bowl centrifuges can be used for 2 phase liquid-liquid separation only.

In flashing of jams, the temperature of concentrated jam decreases on flashing as the source of ignition is the solvent itself. Also, the vapor pressure of the concentrated jam sustains combustion as the temperature is brought down to the flash point which is the lowest temperature at which the vapor pressure is just sufficient to sustain combustion.

In differential screen analysis, for calculating the particle size of the food particles on any one sieve, the average food particle size on that sieve is the mean of the screen opening of that sieve and the sieve above it.

NPr= (Cp μ)/k. Thermal Boundary layer is thicker than Hydrodynamic Boundary layer.

All of the mentioned sentences are true with respect to mixing.