Condensation And Boiling - Mechanical Engineering MCQ

Consider boiling curve for pool boiling of water at saturation temperature and atmospheric pressure and match the following

The convective coefficients for boiling and condensation usually lie in the range (W/m²-K)

Dropwise condensation usually occurs on

Consider the following statements:
1. If a condensing liquid does not wet a surface, then dropwise condensation will not take place un it:
2. Dropwise condensation gives a higher transfer rate than filmwise condensation.
3. Reynolds number of condensing liquid is based on its mass flow.
4. Suitable coating or vapour additive is used to promote filmwise condensation.

Which of these statements are correct?

5 In condensation over a vertical surface, the value of convection coefficient varies as

Where k is the thermal conductivity of the liquid

Which of the followings is a wrong statement in the context of convective heat transfer coefficient in laminar film condensation?The heat transfer coefficient varies as

For filmwise condensation on a vertical plane; the film thickness 5 and heat transfer coefficient h vary with distance* from the leading edge as