6. Which of the following is NOT a type of steel?
a) Carbon steel
b) Stainless steel
c) Aluminum steel
d) Alloy steel
Answer: c) Aluminum steel
7. What is the term used to describe the protective coating applied to steel to prevent corrosion?
a) Galvanization
b) Oxidation
c) Rusting
d) Passivation
Answer: a) Galvanization
8. Which of the following is a major steel-producing country?
a) Brazil
b) Russia
c) India
d) All of the above
Answer: d) All of the above
9. Which of the following is NOT a common application of steel in the construction industry?
a) Structural beams
b) Reinforcing bars
c) Roofing tiles
d) Cladding
Answer: c) Roofing tiles
10. What is the term used to describe the process of joining two pieces of steel together by heating them to a high temperature and applying pressure?
a) Welding
b) Bolting
c) Soldering
d) Riveting
Answer: a) Welding
