26. Which of the following is NOT a common steel product?
a) Steel bars
b) Steel pipes
c) Steel fabric
d) Steel paper
27. What is the term used to describe the ability of a material to return to its original shape after being deformed?
a) Elasticity
b) Ductility
c) Hardness
d) Stiffness
28. Which of the following is a common method of steel production that utilizes scrap steel as the primary raw material?
a) Blast Furnace-Basic Oxygen Furnace (BF-BOF)
b) Electric Arc Furnace (EAF)
c) Open Hearth Furnace (OHF)
d) Bessemer Converter
29. What is the term used to describe the process of removing excess carbon from steel to reduce its brittleness?
a) Carbonization
b) Decarbonization
c) Carbide formation
d) Carbon diffusion
30. Which of the following is NOT a common steel surface coating?
a) Paint
b) Powder coating
c) Galvanization
d) Plating
