Stainless steel is an alloy of iron widely used in cutlery, medical instruments, and chemical engineering due to its high strength and exceptional resistance to corrosion. Which main elements are added to iron to produce stainless steel?
Copper and zinc
Chromium and nickel
Aluminium and copper
Tin and lead
81 exam-style questions on OCR GCSE Chemistry Improving processes and products. Each one has a worked solution and a mark scheme showing where the marks go.