The surfaces of a Dewar flask are silvered for the purpose of minimizing heat transfer by what process?
A)conduction
B)radiation
C)convection
D)vaporization

Question

Quizplus · Accepted Answer

The silvered surface of a Dewar flask is designed to reduce heat transfer by radiation. The shiny surface reflects thermal radiation, which helps to reduce the amount of heat that is lost or gained through the walls of the flask. Conduction and convection can also contribute to heat transfer, but these processes are minimized through the use of a vacuum layer between the inner and outer walls of the Dewar flask. Vaporization is not a relevant process for heat transfer in a Dewar flask.

The Surfaces of a Dewar Flask Are Silvered for the Purpose