7719Chemical EngineeringMedium
Fluid motion in the natural convection heat transfer between a solid surface and a fluid in contact with it, results from the________?
AExistence of thermal boundary layer
BBuoyancy of the bubbles produced at active nucleation site
CNone of these
DTemperature gradient produced due to density difference
Correct answer
C. None of these
Explanation
The correct answer is None of these.