Questions as text
Q1 · An element X has a high melting point and its oxide, X2O3, is coloured 0654/11 May/June 2006
26 An element X has a high melting point and its oxide, X2O3, is coloured. How are X and X2O3 described? X X2O3 A transition metal acidic B transition metal basic C non-metal acidic D non-metal basic
1 marks
Answer: B
This question in 0654/11 May/June 2006
Q2 · The diagram shows how limestone can be converted into useful products for industry 0654/11 Oct/Nov 2006
22 The diagram shows how limestone can be converted into useful products for industry. process P reaction limestone lime product Q with water What are process P and product Q? P Q A combustion an acid B combustion an alkali C decomposition an acid D decomposition an alkali
1 marks
Answer: D
This question in 0654/11 Oct/Nov 2006
Q3 · An element E is a metal 0654/11 Oct/Nov 2008
15 An element E is a metal. In which Group of the Periodic Table could E occur and which type of oxide does E form? Group type of oxide A I basic B III acidic C VI basic D VII acidic
1 marks
Answer: A
This question in 0654/11 Oct/Nov 2008
Q4 · Which types of oxide are formed by magnesium and sulfur? 0654/11 May/June 2009
15 Which types of oxide are formed by magnesium and sulfur? magnesium sulfur A acidic acidic B acidic basic C basic acidic D basic basic
1 marks
Answer: C
This question in 0654/11 May/June 2009
Q5 · Element X forms a basic oxide 0654/11 Oct/Nov 2009
15 Element X forms a basic oxide. How should X be described? type of element position in the Periodic Table A metal on the left B metal on the right C non-metal on the left D non-metal on the right
1 marks
Answer: A
This question in 0654/11 Oct/Nov 2009
Q6 · Which box contains a solution of a metal oxide? 0654/13 May/June 2012
20 Which box contains a solution of a metal oxide? A B C D acidic acidic alkaline alkaline pH3 pH11 pH3 pH11
1 marks
Answer: D
This question in 0654/13 May/June 2012
Q7 · Which equation represents the decomposition of limestone into lime? 0654/12 May/June 2013
25 Which equation represents the decomposition of limestone into lime? A CaCO3 → CaO + CO2 B CaCO3 + H2O → Ca(OH)2 + CO2 C CaCO3 + O2 → CaO3 + CO2 D Ca(OH)2 → CaO + H2O
1 marks
Answer: A
This question in 0654/12 May/June 2013
Q8 · The elements in a Group of the Periodic Table are solid at 20 °C 0654/11 Oct/Nov 2013
24 The elements in a Group of the Periodic Table are solid at 20 °C. The reactivity of the elements increases down the group. Which statements about this group of elements and their oxides are correct? the elements are in their oxides are A Group I acidic B Group I basic C Group VII acidic D Group VII basic
1 marks
Answer: B
This question in 0654/11 Oct/Nov 2013
Q9 · The box shows four substances 0654/13 Oct/Nov 2013
21 The box shows four substances. Br2 CO Cu Na Which substance is an element that forms a basic oxide and coloured compounds? A Br2 B CO C Cu D Na
1 marks
Answer: C
This question in 0654/13 Oct/Nov 2013
Q10 · The elements in a Group of the Periodic Table are solid at 20 °C 0654/13 Oct/Nov 2013
25 The elements in a Group of the Periodic Table are solid at 20 °C. The reactivity of the elements increases down the group. Which statements about this group of elements and their oxides are correct? the elements are in their oxides are A Group I acidic B Group I basic C Group VII acidic D Group VII basic
1 marks
Answer: B
This question in 0654/13 Oct/Nov 2013
Q11 · Which row describes an element on the left of the Periodic Table and its oxide? 0654/11 May/June 2014
23 Which row describes an element on the left of the Periodic Table and its oxide? type of oxide type of element A acidic metallic B acidic non-metallic C basic metallic D basic non-metallic
1 marks
Answer: C
This question in 0654/11 May/June 2014
Q12 · Calcium carbonate, CaCO3, is decomposed by heating in an industrial process as shown… 0654/11 May/June 2014
25 Calcium carbonate, CaCO3, is decomposed by heating in an industrial process as shown: CaCO3(s) → CaO(s) + CO2(g) Which statement is not correct? A The common name for calcium carbonate is limestone. B The common name for CaO is lime. C CaO is used to neutralise alkaline soil. D CaO is used to neutralise industrial waste products.
1 marks
Answer: C
This question in 0654/11 May/June 2014
Q13 · Which row correctly identifies the types of oxides? 0654/12 May/June 2014
23 Which row correctly identifies the types of oxides? acidic oxides basic oxides A CaO, Na2O CO2, SO2 B CaO, SO2 CO2, Na2O C CO2, Na2O CaO, SO2 D CO2, SO2 CaO, Na2O
1 marks
Answer: D
This question in 0654/12 May/June 2014
Q14 · Which equation describes the manufacture of lime from limestone? 0654/12 May/June 2014
25 Which equation describes the manufacture of lime from limestone? A calcium carbonate → calcium hydroxide + carbon dioxide B calcium carbonate → calcium oxide + carbon dioxide C calcium hydroxide → calcium oxide + water D calcium oxide + carbon dioxide → calcium carbonate
1 marks
Answer: B
This question in 0654/12 May/June 2014
Q15 · Calcium carbonate, CaCO3, is decomposed by heating in an industrial process as shown… 0654/13 May/June 2014
23 Calcium carbonate, CaCO3, is decomposed by heating in an industrial process as shown: CaCO3(s) → CaO(s) + CO2(g) Which statement is not correct? A The common name for calcium carbonate is limestone. B The common name for CaO is lime. C CaO is used to neutralise alkaline soil. D CaO is used to neutralise industrial waste products.
1 marks
Answer: C
This question in 0654/13 May/June 2014
Q16 · Which row describes an element on the left of the Periodic Table and its oxide? 0654/13 May/June 2014
24 Which row describes an element on the left of the Periodic Table and its oxide? type of oxide type of element A acidic metallic B acidic non-metallic C basic metallic D basic non-metallic
1 marks
Answer: C
This question in 0654/13 May/June 2014
Q17 · Metal X is extracted from its oxide by heating with carbon 0654/11 Oct/Nov 2014
20 Metal X is extracted from its oxide by heating with carbon. The oxide of X reacts with hydrochloric acid. Which row shows the type of oxide and the type of reaction that occurs to the oxide when it is heated with carbon? type of oxide type of reaction A acidic oxidation B acidic reduction C basic oxidation D basic reduction
1 marks
Answer: D
This question in 0654/11 Oct/Nov 2014
Q18 · Metal X is extracted from its oxide by heating with carbon 0654/12 Oct/Nov 2014
19 Metal X is extracted from its oxide by heating with carbon. The oxide of X reacts with hydrochloric acid. Which row shows the type of oxide and the type of reaction that occurs to the oxide when it is heated with carbon? type of oxide type of reaction A acidic oxidation B acidic reduction C basic oxidation D basic reduction
1 marks
Answer: D
This question in 0654/12 Oct/Nov 2014
Q19 · When limestone is heated, the following reaction takes place 0654/12 May/June 2015
25 When limestone is heated, the following reaction takes place. limestone → lime + carbon dioxide What are the chemical names of limestone and lime and which type of reaction does the limestone undergo? limestone lime type of reaction A calcium carbonate calcium oxide reduction B calcium carbonate calcium oxide thermal decomposition C calcium oxide calcium carbonate reduction D calcium oxide calcium carbonate thermal decomposition
1 marks
Answer: B
This question in 0654/12 May/June 2015
Q20 · Which row describes metallic oxides and non-metallic oxides? 0654/11 Oct/Nov 2016
20 Which row describes metallic oxides and non-metallic oxides? metallic oxides non-metallic oxides A acidic acidic B acidic basic C basic acidic D basic basic
1 marks
Answer: C
This question in 0654/11 Oct/Nov 2016
Q21 · Lime is manufactured from limestone 0654/13 Oct/Nov 2016
26 Lime is manufactured from limestone. limestone → lime + carbon dioxide The limestone undergoes … 1 … during the reaction. The chemical name for lime is … 2 … . Lime is used to treat … 3 … industrial waste. Which words complete gaps 1, 2 and 3? 1 2 3 A reduction calcium oxide acidic B thermal decomposition calcium carbonate acidic C thermal decomposition calcium oxide acidic D thermal decomposition calcium oxide basic
1 marks
Answer: C
This question in 0654/13 Oct/Nov 2016
Q22 · Which word equation describes the manufacture of lime from limestone? 0654/11 Oct/Nov 2017
26 Which word equation describes the manufacture of lime from limestone? A calcium carbonate → calcium hydroxide + carbon dioxide B calcium carbonate → calcium oxide + carbon dioxide C calcium hydroxide → calcium oxide + water D calcium oxide + carbon dioxide → calcium carbonate
1 marks
Answer: B
This question in 0654/11 Oct/Nov 2017
Q23 · Which word equation describes the manufacture of lime from limestone? 0654/12 Oct/Nov 2017
26 Which word equation describes the manufacture of lime from limestone? A calcium carbonate → calcium hydroxide + carbon dioxide B calcium carbonate → calcium oxide + carbon dioxide C calcium hydroxide → calcium oxide + water D calcium oxide + carbon dioxide → calcium carbonate
1 marks
Answer: B
This question in 0654/12 Oct/Nov 2017
Q24 · Which word equation describes the manufacture of lime from limestone? 0654/13 Oct/Nov 2017
26 Which word equation describes the manufacture of lime from limestone? A calcium carbonate → calcium hydroxide + carbon dioxide B calcium carbonate → calcium oxide + carbon dioxide C calcium hydroxide → calcium oxide + water D calcium oxide + carbon dioxide → calcium carbonate
1 marks
Answer: B
This question in 0654/13 Oct/Nov 2017
Q25 · An oxide of element X neutralises a dilute acid 0654/13 Oct/Nov 2018
21 An oxide of element X neutralises a dilute acid. What is X? A carbon B hydrogen C magnesium D sulfur
1 marks
Answer: C
This question in 0654/13 Oct/Nov 2018
Q26 · Which row identifies the types of oxides? 0654/11 May/June 2019
19 Which row identifies the types of oxides? acidic oxides basic oxides A CaO, Na2O CO2, SO2 B CaO, SO2 CO2, Na2O C CO2, Na2O CaO, SO2 D CO2, SO2 CaO, Na2O
1 marks
Answer: D
This question in 0654/11 May/June 2019
Q27 · Which row identifies the types of oxides? 0654/12 May/June 2019
20 Which row identifies the types of oxides? acidic oxides basic oxides A CaO, Na2O CO2, SO2 B CaO, SO2 CO2, Na2O C CO2, Na2O CaO, SO2 D CO2, SO2 CaO, Na2O
1 marks
Answer: D
This question in 0654/12 May/June 2019
Q28 · Which row identifies the types of oxides? 0654/13 May/June 2019
20 Which row identifies the types of oxides? acidic oxides basic oxides A CaO, Na2O CO2, SO2 B CaO, SO2 CO2, Na2O C CO2, Na2O CaO, SO2 D CO2, SO2 CaO, Na2O
1 marks
Answer: D
This question in 0654/13 May/June 2019
Q29 · Which row describes lime and the solubility of limestone in water? 0654/13 Oct/Nov 2019
25 Which row describes lime and the solubility of limestone in water? lime limestone A acidic oxide insoluble B acidic oxide soluble C basic oxide insoluble D basic oxide soluble
1 marks
Answer: C
This question in 0654/13 Oct/Nov 2019
Q30 · Limestone is converted to lime in process 1 0654/11 May/June 2020
25 Limestone is converted to lime in process 1. Limestone is used to treat industrial waste in process 2. What are processes 1 and 2? process 1 process 2 A decomposition dissolving B decomposition neutralisation C oxidation dissolving D oxidation neutralisation
1 marks
Answer: B
This question in 0654/11 May/June 2020
Q31 · Which statement about calcium carbonate is not correct? 0654/12 May/June 2020
25 Which statement about calcium carbonate is not correct? A It forms carbon dioxide when it is heated. B It forms carbon dioxide when it is mixed with dilute hydrochloric acid. C It is formed by heating lime. D It neutralises acids.
1 marks
Answer: C
This question in 0654/12 May/June 2020
Q32 · When limestone is heated it thermally decomposes into lime 0654/13 May/June 2020
24 When limestone is heated it thermally decomposes into lime. What is the word equation for this reaction? A calcium carbonate → calcium + carbon dioxide B calcium carbonate → calcium oxide + carbon dioxide C calcium hydrogencarbonate → calcium + carbon dioxide + water D calcium hydrogencarbonate → calcium oxide + carbon dioxide + water
1 marks
Answer: B
This question in 0654/13 May/June 2020
Q33 · What is the chemical name for lime? 0654/11 May/June 2021
25 What is the chemical name for lime? A calcium carbonate B calcium hydroxide C calcium oxide D calcium sulfate
1 marks
Answer: C
This question in 0654/11 May/June 2021
Q34 · What are the products of the thermal decomposition of calcium carbonate, CaCO3? 0654/12 May/June 2021
25 What are the products of the thermal decomposition of calcium carbonate, CaCO3? A calcium and carbon dioxide B calcium, carbon and oxygen C calcium oxide and carbon dioxide D calcium oxide and carbon monoxide
1 marks
Answer: C
This question in 0654/12 May/June 2021
Q35 · What are the products of the thermal decomposition of calcium carbonate, CaCO3? 0654/13 May/June 2021
25 What are the products of the thermal decomposition of calcium carbonate, CaCO3? A calcium and carbon dioxide B calcium, carbon and oxygen C calcium oxide and carbon dioxide D calcium oxide and carbon monoxide
1 marks
Answer: C
This question in 0654/13 May/June 2021
Q36 · Which statements about limestone are correct? 0654/13 Oct/Nov 2021
25 Which statements about limestone are correct? 1 Limestone is used to neutralise industrial waste products. 2 Limestone is used to treat acidic soil. 3 Thermal decomposition of limestone produces calcium oxide. A 1 and 2 only B 1 and 3 only C 2 and 3 only D 1, 2 and 3
1 marks
Answer: D
This question in 0654/13 Oct/Nov 2021
Q37 · A student makes lists of acidic oxides and basic oxides 0654/12 Feb/March 2023
21 A student makes lists of acidic oxides and basic oxides. acidic oxides basic oxides carbon dioxide calcium oxide potassium oxide magnesium oxide nitrogen dioxide sodium oxide phosphorus oxide sulfur dioxide Which oxides are not in the correct list? A carbon dioxide and sodium oxide B potassium oxide and sulfur dioxide C nitrogen dioxide and sulfur dioxide D potassium oxide and calcium oxide
1 marks
Answer: B
This question in 0654/12 Feb/March 2023
Q38 · Potassium oxide and sulfur dioxide are both soluble in water 0654/12 May/June 2023
21 Potassium oxide and sulfur dioxide are both soluble in water. Which row describes properties of these oxides? pH in aqueous effect on damp oxide solution red litmus A potassium oxide 14 turns blue B potassium oxide 2 stays red C sulfur dioxide 14 stays red D sulfur dioxide 2 turns blue
1 marks
Answer: A
This question in 0654/12 May/June 2023
Q39 · The box lists four substances 0654/12 May/June 2023
22 The box lists four substances. Br2 CO Cu Na Which substance is an element that forms a basic oxide and coloured compounds? A Br2 B CO C Cu D Na
1 marks
Answer: C
This question in 0654/12 May/June 2023
Q40 · Which statements about limestone are correct? 0654/12 May/June 2023
25 Which statements about limestone are correct? 1 It contains calcium oxide. 2 It is used to manufacture lime. 3 It neutralises acidic industrial waste products. 4 It neutralises alkaline soil. A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4
1 marks
Answer: C
This question in 0654/12 May/June 2023
Q41 · Potassium oxide and sulfur dioxide are both soluble in water 0654/13 May/June 2023
21 Potassium oxide and sulfur dioxide are both soluble in water. Which row describes properties of these oxides? pH in aqueous effect on damp oxide solution red litmus A potassium oxide 14 turns blue B potassium oxide 2 stays red C sulfur dioxide 14 stays red D sulfur dioxide 2 turns blue
1 marks
Answer: A
This question in 0654/13 May/June 2023
Q42 · Four different oxides are listed 0654/11 Oct/Nov 2023
20 Four different oxides are listed. 1 calcium oxide 2 lithium oxide 3 nitrogen oxide 4 phosphorus oxide Which oxides are acidic oxides? A 1 and 2 B 1 and 3 C 2 and 4 D 3 and 4
1 marks
Answer: D
This question in 0654/11 Oct/Nov 2023
Q43 · Which substance is a basic oxide? 0654/12 Oct/Nov 2023
20 Which substance is a basic oxide? A calcium oxide B carbon dioxide C nitrogen dioxide D sulfur dioxide
1 marks
Answer: A
This question in 0654/12 Oct/Nov 2023
Q44 · Which word equation describes the manufacture of lime from limestone? 0654/12 Oct/Nov 2023
25 Which word equation describes the manufacture of lime from limestone? A calcium carbonate calcium hydroxide + carbon dioxide B calcium carbonate calcium oxide + carbon dioxide C calcium hydroxide calcium oxide + water D calcium oxide + carbon dioxide calcium carbonate
1 marks
Answer: B
This question in 0654/12 Oct/Nov 2023
Q45 · Element X burns in air to produce an oxide 0654/13 Oct/Nov 2023
21 Element X burns in air to produce an oxide. A solution of the oxide has a pH value of 10. What is X? A argon B carbon C magnesium D phosphorus
1 marks
Answer: C
This question in 0654/13 Oct/Nov 2023
Q46 · Which type of reaction is used to manufacture lime from limestone? 0654/13 May/June 2024
26 Which type of reaction is used to manufacture lime from limestone? A addition polymerisation B cracking C neutralisation D thermal decomposition
1 marks
Answer: D
This question in 0654/13 May/June 2024
Q47 · Which substance is classified as an acidic oxide? 0654/11 Oct/Nov 2024
22 Which substance is classified as an acidic oxide? A calcium oxide B carbon dioxide C lithium oxide D sodium oxide
1 marks
Answer: B
This question in 0654/11 Oct/Nov 2024
Q48 · What are two uses of limestone? 0654/13 Oct/Nov 2024
25 What are two uses of limestone? 1 as a fertiliser 2 to decrease the pH of soil 3 making lime 4 neutralising some industrial waste products A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4
1 marks
Answer: D
This question in 0654/13 Oct/Nov 2024
Q49 · Which row shows the types of oxide formed by magnesium and sulfur? 0654/12 Feb/March 2025
22 Which row shows the types of oxide formed by magnesium and sulfur? magnesium sulfur A acidic acidic B acidic basic C basic acidic D basic basic
1 marks
Answer: C
This question in 0654/12 Feb/March 2025
Q50 · The element rubidium is in Group I of the Periodic Table 0654/11 Oct/Nov 2025
22 The element rubidium is in Group I of the Periodic Table. It burns in oxygen to form an oxide. Which row describes rubidium and its oxide? type of element type of oxide A metal acidic B metal basic C non-metal acidic D non-metal basic
1 marks
Answer: B
This question in 0654/11 Oct/Nov 2025
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