Question 7
Question 7 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
9. Metals
9.4. Reactivity series

Describe the reactions, if any, of: (a) potassium, sodium and calcium with cold water (b) magnesium with steam (c) magnesium, zinc, iron, copper, silver and gold with dilute hydrochloric acid and explain these reactions in terms of the position of the metals in the reactivity series

9. Metals
9.6. Extraction of metals

State the symbol equations for the extraction of iron from hematite (a) ( C + O_2 ightarrow CO_2 ) (b) ( C + CO_2 ightarrow 2CO ) (c) ( Fe_2O_3 + 3CO ightarrow 2Fe + 3CO_2 ) (d) ( CaCO_3 ightarrow CaO + CO_2 ) (e) ( CaO + SiO_2 ightarrow CaSiO_3 )

3. Stoichiometry
3.1. Formulae

Construct word equations and symbol equations to show how reactants form products, including state symbols