41. Which of the following is NOT a common method of steel surface protection?
a) Painting
b) Coating
c) Passivation
d) Rusting
42. What is the term used to describe the process of heating steel to a specific temperature and then cooling it in a controlled manner to improve its properties?
a) Tempering
b) Annealing
c) Quenching
d) Normalizing
43. Which of the following is a common application of steel in the energy sector?
a) Pipelines
b) Wind turbines
c) Oil rigs
d) All of the above
44. What is the term used to describe the measure of a material’s resistance to fracture when subjected to a sudden impact?
a) Elasticity
b) Ductility
c) Hardness
d) Toughness
45. Which of the following is a common environmental benefit of using steel in construction?
a) Reduced carbon emissions
b) Water conservation
c) Improved air quality
d) Reduced waste generation
