6552Chemical EngineeringMedium
The heat transfer by radiation from a mild steel surface is to be reduced by reducing the emissivity of the surface. This can be best achieved by________?
APainting the surface black
BPainting the surface white (with aluminium paint)
CRoughening the surface
DGiving the surface a mirror finish
Correct answer
B. Painting the surface white (with aluminium paint)
Explanation
The correct answer is Painting the surface white (with aluminium paint).