16. Which of the following is a common environmental concern associated with the steel industry?
a) Air pollution
b) Water contamination
c) Deforestation
d) Soil erosion
17. Which of the following is NOT a factor that affects the price of steel?
a) Demand and supply
b) Raw material costs
c) Currency exchange rates
d) Stock market performance
18. What is the term used to describe the process of recycling steel scrap to produce new steel products?
a) Upcycling
b) Downcycling
c) Melting
d) Shredding
19. Which of the following is a common method used for steel surface preparation before painting or coating?
a) Sandblasting
b) Acid etching
c) Power washing
d) Electroplating
20. Which of the following is a common application of electrical steel?
a) Transformers
b) Reinforcing bars
c) Automotive bodies
d) Shipbuilding
