Question 17
Question 17 of 40
Question image for Q17
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
7. Acids, bases and salts
7.2. Oxides

Describe amphoteric oxides as oxides that react with acids and with bases to produce a salt and water

9. Metals
9.4. Reactivity series

Explain the apparent unreactivity of aluminium in terms of its oxide layer

9. Metals
9.6. Extraction of metals

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