MCQOPTIONS
Bookmark
Saved Bookmarks
→
Food Engineering
→
Unit Operations Evaporation in Food Engineering
→
Velocity gradient is the main driving force in ma..
1.
Velocity gradient is the main driving force in mass transfer.
A.
True
B.
False
Answer» C.
Show Answer
Discussion
No Comment Found
Post Comment
Related MCQs
In a packaging of dry grapes, the packaging material is made of polyethylene. The dry grapes have certain moisture content. Which of the following is true with respect to the diffusion of certain amount of moisture through the packing?
Statement 1: Diffusion of gas component through the resistive film to the bulk of the liquid is the rate determining step.Statement 2: Diffusion of gas component through the gas-liquid inter-phase is the rate determining step.
Ratio of equilibrium concentrations of solute A in liquid phase and gas phase i.e. CAL* and CAg* respectively is α. α is called _____
Statement 1: Resistance is inversely proportional to the inter-facial area.Statement 2: The inter-facial area of a body is the area of the dispersed phase in a unit volume of the vessel.
Statement 1: Diffusion is faster than convective mass transfer.Statement 2: Mass transfer is proportional to the area of contact.
A phase boundary between alcohol and water exists.
Statement 1: A phase boundary exists between alcohol and oxygen.Statement 2: Phase boundary varies with agitation. It is inversely proportional to the amount of agitation provided.
Velocity gradient is the main driving force in mass transfer.
Statement 1: When alcohol is allowed to move from chamber A to chamber B when a barrier between them is removed, it is called multi phase diffusion.Statement 2: When oxygen is made to diffuse into the water, it’s called continuous molecular diffusion.
Shifting of a pair of ripened apples from the store house to the vegetable cart is called mass transfer.
Reply to Comment
×
Name
*
Email
*
Comment
*
Submit Reply