A. Linear
B. Hyperbolic
C. Parabolic
D. None of these
A. Convection becomes important
B. Conduction becomes important
C. Radiation becomes important
D. Sub-cooled boiling occurs
A. Extractive distillation
B. Evaporation
C. Leaching
D. Absorption
‘Duhring’s plot’ is of use in_________________? Read More »
Chemical Heat Transfer A. Steady state conduction
B. Natural convection
C. Forced convection
D. Radiation
View factor is important in heat transfer by_____________________? Read More »
Chemical Heat Transfer A. Scaling characteristics
B. High viscosity
C. Both A. & B.
D. Neither A. nor B.
A. Colburn
B. Reynolds
C. Prandtl
D. None of these
The equation, Nst = f/2, is the _____________ analogy? Read More »
Chemical Heat Transfer A. Strouhal number
B. Sherwood number
C. Euler number
D. Grashoff number
Which of the following is directly concerned with the heat transfer ? Read More »
Chemical Heat Transfer A. Is thicker than hydrodynamic boundary layer
B. Is thinner than hydrodynamic boundary layer
C. And the hydrodynamic boundary layers are identical
D. Disappears
The thermal boundary layer at NPr > 1 ? Read More »
Chemical Heat Transfer A. On polished surfaces
B. On rough surfaces
C. In the absence of agitation
D. None of these
Nucleate boiling is promoted ___________________? Read More »
Chemical Heat Transfer A. 0.5
B. < 0.5
C. > 0.6
D. < 0.1
