A. Reynolds
B. Nusselt
C. Grashoff
D. Both B. & C.
A. 0.5
B. 2
C. 10
D. 100
A. Increasing temperature of the vapour
B. Decreasing temperature of the vapour
C. Increasing viscosity of the film of condensate
D. Increasing temperature drop
A. Is thicker than hydrodynamic boundary layer
B. Is thinner than hydrodynamic boundary layer
C. And the hydrodynamic boundary layers are identical
D. Disappears
A. Large scale evaporation of liquor is needed
B. Corrosive liquids are to be concentrated
C. Fuel is cheaply available
D. Evaporation on small scale is to be done
A. Agitated film evaporator
B. Long tube vertical evaporator
C. Open pan evaporator
D. None of these
A. 6000
B. 24000
C. 60000
D. 48000