Chemical Engineering Basics - Practice Test

(A) Bubble generation is by expansion of entrapped gas/vapour at small cavities in the surface

(B) Surface temperature is greater than the saturation temperature of the liquid

(C) Heat transfer from the surface of the liquid is less than that in film boiling

(D) The temperature is less than that of film boiling

(D) The temperature is less than that of film boiling

(A) Filmwise condensation gives a lower heat transfer rate than the dropwise condensation

(B) Suitable coating or vapour additive is used to promote film wise condensation

(C) If a condensing liquid does not wet the surface dropwise, even then condensation will take place on it

(D) Reynolds number of condensing liquid is based on its mass flow rate

(B) Suitable coating or vapour additive is used to promote film wise condensation

(A) Normalising

(B) Tempering

(C) Annealing

(D) None of these

(B) Tempering

(A) Hot rolling

(B) Cold drawing

(C) Casting and turning to size

(D) Forging and turning to size

(D) Forging and turning to size

(A) Cold working

(B) Hot working

(C) Shot peening

(D) Any of these

(B) Hot working

Chemical Engineering Basics - Study Mode