Question 29
Question 29 of 40
Question image for Q29
Periodic Table
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No letter options?
Older MCQs might not have the typical A, B, C, D choices. They have choices 1, 2, 3, and a combination of them is the answer. Below is the key that maps such combinations to the answer.
A 1, 2 and 3 are correct
B 1 and 2 only are correct
C 2 and 3 only are correct
D 1 only is correct
Topics Tested
9. Metals
9.6. Extraction of metals

State that the main ore of aluminium is bauxite and that aluminium is extracted by electrolysis

9. Metals
9.5. Corrosion of metals

Describe the use of zinc in galvanising as an example of a barrier method and sacrificial protection

9. Metals
9.3. Alloys and their properties

Describe an alloy as a mixture of a metal with other elements, including: (a) brass as a mixture of copper and zinc (b) stainless steel as a mixture of iron and other elements such as chromium, nickel and carbon