Q. Consider the following alloys: - Brass – Copper and Zinc
- Bronze – Copper and Tin
- Duralumin – Aluminium and Copper
- Steel – Iron and Chromium
How many of the above are correctly matched?
Answer:
3 only
Notes: Brass is made from copper and zinc, bronze from copper and tin, and duralumin is mainly aluminium and copper (with magnesium/manganese). Steel is primarily an alloy of iron and carbon. Steel with iron and chromium is stainless steel, not regular steel. Therefore, 3 of the 4 alloy matches are correct.