Question 9
Question 9 of 40
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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
6. Chemical reactions
6.4. Redox

Identify redox reactions by the colour changes involved when using acidified aqueous potassium manganate(VII) or aqueous potassium iodide

7. Acids, bases and salts
7.2. Oxides

Classify oxides as acidic, including SO(_2) and CO(_2), or basic, including CuO and CaO, related to metallic and non-metallic character

3. Stoichiometry
3.1. Formulae

State the formulae of the elements and compounds named in the subject content