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
9.4. Reactivity series

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

9. Metals
9.5. Corrosion of metals

State the conditions required for the rusting of iron and steel to form hydrated iron(III) oxide