Which of the following is the most controlling factor for the rate of bubble detachment from the hot solid surface ?
Correct answer: A. Interfacial tension
- A. Interfacial tension
- B. Liquid viscosity
- C. Hot surface temperature
- D. Liquid density
Explanation
Interfacial tension strongly controls the force holding a vapour bubble to the heated surface and therefore affects the size and rate of its detachment. Liquid density and viscosity also influence bubble motion, but are not usually the dominant controlling factor in this context.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
Practise Heat Transfer Operations
645 free Heat Transfer Operations MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Heat Transfer Operations questions
In a shell and tube heat exchanger, the tube side heat transfer co-efficient just at the entrance of the tube is_________________?
With increase in temperature, the thermal conductivity of steel___________________?
The purpose of providing bleed points in the evaporator is to__________________?
Radiation heat transfer rates does not depend upon the_________________?
If all the conditions and dimensions are same, then the ratio of velocity through the tubes of a double pass heat exchanger to that through the single pass heat exchanger is_________________?
Which of the following is not concerned with the heat transfer ?