Annealing is a heat treatment given to metals to ___________
(a) Prevent dezincification
(b) Remove the residual stresses
(c) Lower the sulphur content
(d) Form a protective layer
I had been asked this question in an online quiz.
The origin of the question is Protective Measures Against Corrosion topic in division Corrosion, Electrolysis, Fuel Cells and Batteries of Engineering Chemistry II