The characteristic properties of acids and bases — Paper 1 · IGCSE Science - Combined 0653

22 The diagrams show the result of adding a powdered metal to dilute sulphuric acid. powdered metal bubbles of gas dilute sulphuric acid powdered metal Which of the metals copper, magnesium and zinc react in this way? A copper only B copper and magnesium only C magnesium and zinc only D zinc only

1 marks

Answer: C

This question in 0653/11 Oct/Nov 2005

22 Aqueous sodium hydrogensulphate reacts with aqueous sodium hydroxide as shown. In this reaction, the sodium hydrogensulphate loses hydrogen. sodium hydrogensulphate + sodium hydroxide — sodium sulphate + water NaHSQ, + NaOH > NazSO, +H20 Which terms apply to sodium hydrogensulphate in this reaction? acid alkali salt A v x x B v x v Cc x v x D x v v

1 marks

Answer: B

This question in 0653/11 May/June 2006

21 Three metals are listed. copper magnesium zinc Which of these metals react with dilute sulphuric acid? A copper and magnesium only B copper and zinc only C magnesium and zinc only D copper, magnesium and zinc

1 marks

Answer: C

This question in 0653/11 Oct/Nov 2006

21 Which substance has a dangerously explosive reaction with sodium? A ammonia B hydrogen C hydrochloric acid D nitrogen

1 marks

Answer: C

This question in 0653/11 Oct/Nov 2007

19 Which metal reacts dangerously when added to dilute sulphuric acid? A copper B magnesium C sodium D zinc

1 marks

Answer: C

This question in 0653/11 May/June 2008

23 The diagrams show an experiment. powdered powdered copper magnesium dilute hydrochloric acid test-tube 1 test-tube 2 Each element is added until there is no further reaction. Universal Indicator solution is then added to each test-tube. What are the colours of the indicator in the two test-tubes? test-tube 1 test-tube 2 A blue green B blue red C red green D red red

1 marks

Answer: C

This question in 0653/11 Oct/Nov 2008

22 The contents of the labelled beakers shown are mixed. dilute HNO3 MgCO3 Which salt is formed? A magnesium nitrate B magnesium sulfate C manganese nitrate D manganese sulfate

1 marks

Answer: A

This question in 0653/11 May/June 2009

21 The table gives, for two metals, the colours of their solids and their aqueous ions. colour of metal solid aqueous ion copper red-brown blue zinc grey colourless Equal amounts of powdered copper and powdered zinc are mixed together. The mixture is added to dilute sulfuric acid in a test-tube until the acid is just used up. Some powder then remains at the bottom of the test-tube. What are the colours of the remaining powder and the solution in the test-tube? powder solution A grey blue B grey colourless C red-brown blue D red-brown colourless

1 marks

Answer: D

This question in 0653/11 May/June 2010

23 The table gives, for two metals, the colours of their solids and their aqueous ions. colour of metal solid aqueous ion copper red-brown blue zinc grey colourless Equal amounts of powdered copper and powdered zinc are mixed together. The mixture is added to dilute sulfuric acid in a test-tube until the acid is just used up. Some powder then remains at the bottom of the test-tube. What are the colours of the remaining powder and the solution in the test-tube? powder solution A grey blue B grey colourless C red-brown blue D red-brown colourless

1 marks

Answer: D

This question in 0653/12 May/June 2010

23 The table gives, for two metals, the colours of their solids and their aqueous ions. colour of metal solid aqueous ion copper red-brown blue zinc grey colourless Equal amounts of powdered copper and powdered zinc are mixed together. The mixture is added to dilute sulfuric acid in a test-tube until the acid is just used up. Some powder then remains at the bottom of the test-tube. What are the colours of the remaining powder and the solution in the test-tube? powder solution A grey blue B grey colourless C red-brown blue D red-brown colourless

1 marks

Answer: D

This question in 0653/13 May/June 2010

21 Aqueous copper(II) ions, Cu2+(aq), are blue. In separate experiments, X and Y, copper powder is added to a test-tube of liquid and the mixture stirred. At the end of each experiment some copper powder remains at the bottom of each tube. experiment X experiment Y copper copper powder powder dilute water sulfuric acid What are the final colours of the liquids above the copper powder? experiment X experiment Y A blue blue B blue colourless C colourless blue D colourless colourless

1 marks

Answer: D

This question in 0653/11 Oct/Nov 2010

22 Substance X is added to dilute sulfuric acid until reaction is complete. The graph shows how the pH changes during the reaction. pH 7 0 0 amount of X added Which type of substance is X? A base B catalyst C indicator D salt

1 marks

Answer: A

This question in 0653/11 May/June 2011

19 Substance X is added to dilute sulfuric acid until reaction is complete. The graph shows how the pH changes during the reaction. pH 7 0 0 amount of X added Which type of substance is X? A base B catalyst C indicator D salt

1 marks

Answer: A

This question in 0653/12 May/June 2011

22 When compound X is added to pure water, the pH increases. Which formula could not be a correct formula for X? A HNO3 B KOH C NaOH D NH3

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2011

17 Sulfur dioxide is formed as a pollutant when fossil fuels are burned. Which properties does sulfur dioxide have? toxic acidic corrosive v v v 0 0O WD > v v x v x x x x x

1 marks

Answer: A

This question in 0653/12 Oct/Nov 2011

23 When compound X is added to pure water, the pH increases. Which formula could not be a correct formula for X? A HNO3 B KOH C NaOH D NH3

1 marks

Answer: A

This question in 0653/12 Oct/Nov 2011

24 When compound X is added to pure water, the pH increases. Which formula could not be a correct formula for X? A HNO3 B KOH C NaOH D NH3

1 marks

Answer: A

This question in 0653/13 Oct/Nov 2011

19 Four pairs of oxides are listed. W calcium oxide and sodium oxide X calcium oxide and sulfur dioxide Y nitrogen dioxide and sodium oxide Z sulfur dioxide and nitrogen dioxide Which pairs of oxides would neutralise each other? A pair W and pair X B pair W and pair Z C pair X and pair Y D pair Y and pair Z

1 marks

This question in 0653/11 May/June 2012

19 Barium oxide is a metallic oxide. A solution of barium oxide is ……1…… with a pH ……2…… than seven. Which words correctly complete gaps 1 and 2? 1 2 A acidic greater B acidic less C alkaline greater D alkaline less

1 marks

Answer: C

This question in 0653/12 May/June 2012

20 Acid X reacts with metal Y. A colourless gas is given off and a pale green solution is produced. Two tests are carried out on the solution. test reagent(s) added result 1 aqueous silver nitrate and nitric acid white precipitate 2 aqueous sodium hydroxide green precipitate What are acid X and metal Y? acid metal A hydrochloric iron B hydrochloric zinc C sulfuric iron D sulfuric zinc

1 marks

Answer: A

This question in 0653/12 May/June 2012

19 Barium oxide is a metallic oxide. A solution of barium oxide is ……1…… with a pH ……2…… than seven. Which words correctly complete gaps 1 and 2? 1 2 A acidic greater B acidic less C alkaline greater D alkaline less

1 marks

Answer: C

This question in 0653/13 May/June 2012

20 Acid X reacts with metal Y. A colourless gas is given off and a pale green solution is produced. Two tests are carried out on the solution. test reagent(s) added result 1 aqueous silver nitrate and nitric acid white precipitate 2 aqueous sodium hydroxide green precipitate What are acid X and metal Y? acid metal A hydrochloric iron B hydrochloric zinc C sulfuric iron D sulfuric zinc

1 marks

Answer: A

This question in 0653/13 May/June 2012

18 The table shows the properties of four substances. Which substance is an alkali? solubility in water reaction with an acid A insoluble reacts B insoluble does not react C soluble reacts D soluble does not react

1 marks

Answer: C

This question in 0653/11 Oct/Nov 2013

18 The table shows the properties of four substances. Which substance is an alkali? solubility in water reaction with an acid A insoluble reacts B insoluble does not react C soluble reacts D soluble does not react

1 marks

Answer: C

This question in 0653/12 Oct/Nov 2013

18 The table shows the properties of four substances. Which substance is an alkali? solubility in water reaction with an acid A insoluble reacts B insoluble does not react C soluble reacts D soluble does not react

1 marks

Answer: C

This question in 0653/13 Oct/Nov 2013

23 Which substance does not react with dilute hydrochloric acid to form copper(II) chloride? A copper B copper carbonate C copper hydroxide D copper oxide

1 marks

Answer: A

This question in 0653/11 May/June 2014

22 Which substance does not react with dilute hydrochloric acid to form copper(II) chloride? A copper B copper carbonate C copper hydroxide D copper oxide

1 marks

Answer: A

This question in 0653/13 May/June 2014

17 The contents of the two beakers shown are mixed. dilute HNO3 MgCO3 Which salt is formed? A magnesium nitrate B magnesium sulfate C manganese nitrate D manganese sulfate

1 marks

Answer: A

This question in 0653/12 Oct/Nov 2014

21 The table shows the results of tests on an aqueous solution of X. test result blue litmus paper turns red aqueous silver nitrate white precipitate formed What is X? A HCl B HNO3 C NaCl D NaOH

1 marks

Answer: A

This question in 0653/11 May/June 2015

22 The table shows the results of tests on an aqueous solution of X. test result blue litmus paper turns red aqueous silver nitrate white precipitate formed What is X? A HCl B HNO3 C NaCl D NaOH

1 marks

Answer: A

This question in 0653/12 May/June 2015

22 The table shows the results of tests on an aqueous solution of X. test result blue litmus paper turns red aqueous silver nitrate white precipitate formed What is X? A HCl B HNO3 C NaCl D NaOH

1 marks

Answer: A

This question in 0653/13 May/June 2015

25 The diagram shows an element being added to cold water to form a gas and an alkaline solution. element alkaline bubbles solution cold water element What is the element? A calcium B carbon C copper D sulfur

1 marks

Answer: A

This question in 0653/13 May/June 2015

21 Compound X reacts with dilute nitric acid to give a colourless gas which turns limewater milky. A solution of compound X reacts with sodium hydroxide solution to form a pale blue precipitate. What is X? A copper(II) carbonate B copper(II) chloride C iron(II) carbonate D iron(II) chloride

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2015

22 A substance reacts with dilute acid, producing a gas. The gas ignites with a pop when tested with a lighted splint. What is the substance? A copper B copper(II) oxide C magnesium D magnesium carbonate

1 marks

Answer: C

This question in 0653/11 Oct/Nov 2015

21 Sulfuric acid reacts with potassium hydroxide. What are the products of this reaction? potassium potassium carbon water hydroxide sulfate dioxide A v x v Jv key B x v x v Jv =yes Cc x v v v XxX =no D x v x x

1 marks

Answer: B

This question in 0653/12 Oct/Nov 2015

22 A substance reacts with dilute acid, producing a gas. The gas ignites with a pop when tested with a lighted splint. What is the substance? A copper B copper(II) oxide C magnesium D magnesium carbonate

1 marks

Answer: C

This question in 0653/12 Oct/Nov 2015

25 A metal is added to water. It floats and reacts vigorously. What is the pH of the resulting solution? A 1 B 5 C 7 D 14

1 marks

Answer: D

This question in 0653/13 Oct/Nov 2015

20 Dilute hydrochloric acid is added to solid X. Hydrogen gas is produced. dilute hydrochloric acid solid X What is X? A zinc B zinc carbonate C zinc hydroxide D zinc oxide

1 marks

Answer: A

This question in 0653/11 May/June 2016

20 Which element reacts with dilute sulfuric acid to form a salt? A carbon B copper C sulfur D zinc

1 marks

Answer: D

This question in 0653/12 May/June 2016

24 Which metal reacts with dilute hydrochloric acid but does not react with cold water? A copper B calcium C sodium D zinc

1 marks

Answer: D

This question in 0653/12 May/June 2016

20 Which word equation represents the reaction of an acid with a carbonate? A acid + carbonate → salt + carbon dioxide B acid + carbonate → salt + carbon dioxide + water C acid + carbonate → salt + hydrogen + water D acid + carbonate → salt + water

1 marks

Answer: B

This question in 0653/13 May/June 2016

22 Hydrochloric acid reacts with aqueous sodium hydroxide to form a neutral solution of sodium chloride. Which process must be used to obtain dry crystals of sodium chloride from this solution? A distillation B evaporation C filtration D neutralisation

1 marks

Answer: B

This question in 0653/11 Oct/Nov 2016

22 Three powders are added to dilute sulfuric acid, as shown. magnesium powder dilute sulfuric acid magnesium oxide powder dilute sulfuric acid Which of the powders react to produce water? 0 0O WwW D> magnesium x KOK magnesium oxide x < x magnesium carbonate <4 x magnesium carbonate powder dilute sulfuric acid key ¥ = does produce water X = does not produce water

1 marks

Answer: C

This question in 0653/12 Oct/Nov 2016

22 The word equation shows the reaction between substance J and hydrochloric acid. substance J + hydrochloric acid → magnesium chloride + hydrogen What is substance J? A magnesium B magnesium carbonate C magnesium hydroxide D magnesium oxide

1 marks

Answer: A

This question in 0653/13 Oct/Nov 2016

22 Which compound reacts with dilute sulfuric acid? A magnesium chloride B potassium carbonate C sodium sulfate D zinc nitrate

1 marks

Answer: B

This question in 0653/12 Feb/March 2017

21 In which test-tube is an alkaline solution formed? A B C D water excess dilute hydrochloric acid sodium sodium calcium zinc hydroxide chloride carbonate

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2017

22 Excess magnesium is added to dilute hydrochloric acid containing Universal Indicator. The indicator changes colour and a gas is given off. The gas is tested with limewater. Which row describes the colour change and the result of the limewater test? colour change result of the limewater test A blue to green limewater becomes cloudy B blue to green no change C red to green limewater becomes cloudy D red to green no change

1 marks

Answer: D

This question in 0653/11 Oct/Nov 2017

21 Lithium is added to water containing Universal Indicator. A gas is given off and the indicator changes colour. Which row describes the gas produced and the final colour of the indicator? gas final colour produced of the indicator A hydrogen blue B hydrogen red C oxygen blue D oxygen red

1 marks

Answer: A

This question in 0653/12 Oct/Nov 2017

21 Dilute sulfuric acid is added to copper(II) oxide. The mixture is warmed gently. Which observations are correct? colour of gas formed solution formed A blue no B blue yes C colourless no D colourless yes

1 marks

Answer: A

This question in 0653/13 Oct/Nov 2017

18 What is the formula of sulfuric acid? A HSO3 B HSO4 C H2SO3 D H2SO4

1 marks

Answer: D

This question in 0653/12 Feb/March 2018

22 What reacts with dilute hydrochloric acid to make magnesium chloride? 1 magnesium 2 magnesium carbonate 3 magnesium oxide A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

1 marks

Answer: A

This question in 0653/12 Feb/March 2018

16 On which label does the formula match the name of the acid? A B C D hydrochloric hydrochloric sulfuric sulfuric acid acid acid acid HCl H2SO4 HNO3 Na2SO4

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2018

17 Which formula does not represent an acid? A H2SO4 B HCl C HNO3 D NH3

1 marks

Answer: D

This question in 0653/12 Oct/Nov 2018

22 Compound X reacts with compound Y to form sodium sulfate, water and carbon dioxide. What are X and Y? X Y A sodium carbonate hydrochloric acid B sodium carbonate sulfuric acid C sodium hydroxide hydrochloric acid D sodium hydroxide sulfuric acid

1 marks

Answer: B

This question in 0653/12 Oct/Nov 2018

17 What is the formula of nitric acid? A HCl B HNO3 C NaOH D NH3

1 marks

Answer: B

This question in 0653/13 Oct/Nov 2018

22 Magnesium reacts with substance Z. A salt and hydrogen are made in this reaction. Which type of substance is Z? A acid B alkali C element D non-metal

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2019

21 What are the products of the reaction between dilute hydrochloric acid and copper carbonate? A copper chloride + carbon dioxide + water B copper chloride + hydrogen carbonate C copper oxide + carbon dioxide + water D copper oxide + chlorine + water

1 marks

Answer: A

This question in 0653/12 Oct/Nov 2019

21 What are the products of the reaction between dilute hydrochloric acid and copper carbonate? A copper chloride + carbon dioxide + water B copper chloride + hydrogen carbonate C copper oxide + carbon dioxide + water D copper oxide + chlorine + water

1 marks

Answer: A

This question in 0653/13 Oct/Nov 2019

16 Potassium carbonate reacts with dilute hydrochloric acid. What are the products of this reaction? A potassium chloride and hydrogen B potassium chloride, water and carbon dioxide C potassium oxide, carbon dioxide and chlorine D potassium oxide, hydrogen and chlorine

1 marks

Answer: B

This question in 0653/12 Feb/March 2020

20 Universal indicator is placed into a colourless liquid. The colour change of the universal indicator shows that the pH of the liquid is 6. Which statement about the colourless liquid is correct? A It is an acid which turned the universal indicator red. B It is an acid which turned the universal indicator yellow. C It is an alkali which turned the universal indicator blue. D It is neutral liquid which turned the universal indicator green.

1 marks

Answer: B

This question in 0653/12 Feb/March 2020

22 Calcium oxide is added to water containing universal indicator. The universal indicator turns blue. What is the pH of the solution? A 1 B 6 C 7 D 11

1 marks

Answer: D

This question in 0653/11 May/June 2020

21 Which substances react with dilute sulfuric acid to make copper sulfate? 1 copper 2 copper carbonate 3 copper hydroxide 4 copper nitrate A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4

1 marks

Answer: C

This question in 0653/11 Oct/Nov 2020

22 Acid X reacts with metal Y. A colourless gas is given off and a pale green solution is produced. Two tests are carried out on the solution. test reagent(s) added result 1 aqueous silver nitrate and nitric acid white precipitate 2 aqueous sodium hydroxide green precipitate What are acid X and metal Y? acid metal A hydrochloric iron B hydrochloric zinc C sulfuric iron D sulfuric zinc

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2020

26 Which process does not produce carbon dioxide? A fractional distillation of petroleum B the complete combustion of methane C the reaction between an acid and a carbonate D the thermal decomposition of calcium carbonate

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2020

21 Dilute hydrochloric acid is tested with universal indicator and with calcium carbonate. Which row shows the results? pH reaction with calcium carbonate A 2 a colourless gas is given off B 2 no reaction C 10 a colourless gas is given off D 10 no reaction

1 marks

Answer: A

This question in 0653/12 Oct/Nov 2020

22 Acid X reacts with metal Y. A colourless gas is given off and a pale green solution is produced. Two tests are carried out on the solution. test reagent(s) added result 1 aqueous silver nitrate and nitric acid white precipitate 2 aqueous sodium hydroxide green precipitate What are acid X and metal Y? acid metal A hydrochloric iron B hydrochloric zinc C sulfuric iron D sulfuric zinc

1 marks

Answer: A

This question in 0653/12 Oct/Nov 2020

17 Which row correctly identifies formulae for acids and for alkalis? acids alkalis A HNO3 and H2SO4 NaOH and KOH B HNO3 and H2SO4 HCl and KOH C HCl and KOH H2SO4 and HNO3 D NaOH and KOH HNO3 and H2SO4

1 marks

Answer: A

This question in 0653/13 Oct/Nov 2020

21 Which two substances both react with dilute sulfuric acid to make the salt magnesium sulfate? A magnesium carbonate and magnesium chloride B magnesium chloride and magnesium nitrate C magnesium oxide and magnesium carbonate D magnesium oxide and magnesium nitrate

1 marks

Answer: C

This question in 0653/13 Oct/Nov 2020

20 A mixture of ammonium carbonate and ammonium chloride is heated with aqueous sodium hydroxide. Which gas is produced? A ammonia B carbon dioxide C chlorine D hydrogen chloride

1 marks

Answer: A

This question in 0653/12 Feb/March 2021

19 Barium hydroxide is an alkali. Which statement about barium hydroxide is correct? A It has a pH greater than 7 in aqueous solution. B It reacts with aqueous sodium hydroxide. C It reacts with metal carbonates. D It turns Universal Indicator red.

1 marks

Answer: A

This question in 0653/11 May/June 2021

19 The diagram shows an experiment to prepare a salt from compounds P and Q. aqueous P stirrer aqueous Q + Universal Indicator Aqueous Q has a pH value of 1. Aqueous P is added until the pH value of the mixture reaches 7. What are the formulae of compounds P and Q? compound P compound Q A HCl NaOH B HNO3 H2SO4 C KOH HCl D NaOH NH3

1 marks

Answer: C

This question in 0653/12 May/June 2021

19 In six separate experiments, dilute sulfuric acid is added separately to the substances listed. ● magnesium ● magnesium oxide ● magnesium carbonate ● copper ● copper oxide ● copper carbonate How many of these experiments produce a gas? A 2 B 3 C 4 D 5

1 marks

Answer: B

This question in 0653/13 May/June 2021

22 Which word equation correctly describes a reaction of dilute sulfuric acid? A sulfuric acid + zinc  zinc sulfate + water B sulfuric acid + zinc carbonate  zinc sulfate + carbon dioxide C sulfuric acid + zinc hydroxide  zinc sulfate + water D sulfuric acid + zinc oxide  zinc sulfate + hydrogen

1 marks

Answer: C

This question in 0653/11 Oct/Nov 2021

21 In which reaction is carbon dioxide not formed? A adding hydrochloric acid to calcium B adding hydrochloric acid to calcium carbonate C burning coal in air D burning methane in air

1 marks

Answer: A

This question in 0653/12 Feb/March 2022

22 Three powders are added to dilute sulfuric acid, as shown. magnesium powder dilute sulfuric acid Which powders react to produce water? magnesium oxide powder dilute sulfuric acid magnesium magnesium oxide x \ x magnesium carbonate \ \ «Ox magnesium carbonate powder dilute sulfuric acid key ¥ = does produce water X = does not produce water

1 marks

Answer: C

This question in 0653/11 May/June 2022

18 Which row shows the correct formula for the named acid? acid formula A nitric acid HCl B nitric acid HNO3 C sulfuric acid HCl D sulfuric acid HNO3

1 marks

Answer: B

This question in 0653/12 May/June 2022

22 Three powders are added to dilute sulfuric acid, as shown. magnesium powder dilute sulfuric acid Which powders react to produce water? magnesium oxide powder dilute sulfuric acid magnesium magnesium oxide x \ x magnesium carbonate \ \ «Ox magnesium carbonate powder dilute sulfuric acid key ¥ = does produce water X = does not produce water

1 marks

Answer: C

This question in 0653/12 May/June 2022

18 Potassium nitrate can be made by the reaction of dilute nitric acid and aqueous potassium hydroxide. Bottles containing four different aqueous solutions are shown. 1 2 3 4 HNO3 KOH NaOH KNO3 Which aqueous solutions are used to make potassium nitrate? A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4

1 marks

Answer: A

This question in 0653/13 May/June 2022

22 Three powders are added to dilute sulfuric acid, as shown. magnesium powder Which powders react to produce water? dilute sulfuric acid magnesium oxide powder dilute sulfuric acid 0 0O WwW > magnesium x x KS magnesium oxide x \ x magnesium carbonate \ \ «x magnesium carbonate powder dilute sulfuric acid key ¥ = does produce water X = does not produce water

1 marks

Answer: C

This question in 0653/13 May/June 2022

20 The word equation represents the reaction between substance J and hydrochloric acid. substance J + hydrochloric acid  magnesium chloride + hydrogen What is substance J? A magnesium B magnesium carbonate C magnesium hydroxide D magnesium oxide

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2022

20 The word equation represents the reaction between substance J and hydrochloric acid. substance J + hydrochloric acid  magnesium chloride + hydrogen What is substance J? A magnesium B magnesium carbonate C magnesium hydroxide D magnesium oxide

1 marks

Answer: A

This question in 0653/12 Oct/Nov 2022

20 The word equation represents the reaction between substance J and hydrochloric acid. substance J + hydrochloric acid  magnesium chloride + hydrogen What is substance J? A magnesium B magnesium carbonate C magnesium hydroxide D magnesium oxide

1 marks

Answer: A

This question in 0653/13 Oct/Nov 2022

19 Which solid reacts with sulfuric acid to produce a gas? A copper B copper carbonate C copper oxide D copper sulfate

1 marks

Answer: B

This question in 0653/12 Feb/March 2023

21 Dilute hydrochloric acid is tested with universal indicator and with calcium carbonate. Which row shows the pH and describes the reaction with calcium carbonate? pH reaction with calcium carbonate A 2 a colourless gas is given off B 2 no reaction C 10 a colourless gas is given off D 10 no reaction

1 marks

Answer: A

This question in 0653/11 May/June 2023

21 Dilute sulfuric acid reacts with aqueous potassium hydroxide. What are the products of this reaction? potassium potassium carbon water hydroxide sulfate dioxide A J x Jv Jv B x Jv x JV Cc x J Jv Jv D x Jv x x key /=yes X =no

1 marks

Answer: B

This question in 0653/12 May/June 2023

20 Calcium oxide is added to water containing universal indicator. The universal indicator turns blue. What is the pH of the solution? A 1 B 6 C 7 D 11

1 marks

Answer: D

This question in 0653/11 Oct/Nov 2023

21 Acid X reacts with metal Y. A colourless gas is given off and a pale green solution is produced. Two tests are carried out on the solution. test reagents added result 1 aqueous silver nitrate and dilute nitric acid white precipitate 2 aqueous sodium hydroxide green precipitate What are acid X and metal Y? acid X metal Y A hydrochloric iron B hydrochloric zinc C sulfuric iron D sulfuric zinc

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2023

20 Dilute hydrochloric acid is added to powdered solid X. Hydrogen gas is produced. dilute hydrochloric acid powdered solid X What is X? A zinc B zinc carbonate C zinc hydroxide D zinc oxide

1 marks

Answer: A

This question in 0653/12 Oct/Nov 2023

24 Which substance does not react with dilute hydrochloric acid to produce copper chloride? A copper B copper carbonate C copper hydroxide D copper oxide

1 marks

Answer: A

This question in 0653/12 Oct/Nov 2023

17 When solid sodium carbonate and dilute hydrochloric acid are mixed, a reaction occurs. During this reaction, carbon dioxide is released and the temperature of the mixture increases. Which chemical terms describe this reaction? 1 exothermic 2 neutralisation 3 thermal decomposition A 1, 2 and 3 B 1 and 2 only C 1 and 3 only D 2 and 3 only

1 marks

Answer: B

This question in 0653/13 Oct/Nov 2023

20 Dilute hydrochloric acid is added to powdered solid X. Hydrogen gas is produced. dilute hydrochloric acid powdered solid X What is X? A zinc B zinc carbonate C zinc hydroxide D zinc oxide

1 marks

Answer: A

This question in 0653/13 Oct/Nov 2023

17 What is the formula of nitric acid? A HCl B HNO3 C NaOH D NH3

1 marks

Answer: B

This question in 0653/12 May/June 2024

22 Compound X reacts with dilute nitric acid to give a colourless gas which turns limewater milky. An aqueous solution of X reacts with aqueous sodium hydroxide to form a light blue precipitate. What is X? A copper(II) carbonate B copper(II) chloride C iron(II) carbonate D iron(II) chloride

1 marks

Answer: A

This question in 0653/12 May/June 2024

22 Astudent mixes a dilute acid with separate samples from the four bottles shown. Which samples react with the dilute acid? HNOs NaOH H2SO4 KOH A v x x x B v x v x Cc x v x x D x v x v key / = reacts X = does not react

1 marks

Answer: D

This question in 0653/13 May/June 2024

20 Lithium is added to water containing universal indicator. A gas is given off and the indicator changes colour. Which row describes the gas produced and the final colour of the indicator? gas final colour produced of the indicator A hydrogen blue B hydrogen red C oxygen blue D oxygen red

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2024

23 Which row describes an acid? reaction reaction pH with metals with bases A 2 forms water forms hydrogen B 3 forms hydrogen forms water C 4 forms hydrogen forms hydrogen D 8 forms water forms water

1 marks

Answer: B

This question in 0653/12 May/June 2025

16 What is produced when calcium reacts with dilute hydrochloric acid? A calcium chloride + hydrogen B calcium chloride + water C calcium hydroxide + chlorine D calcium hydroxide + hydrogen

1 marks

Answer: A

This question in 0653/13 May/June 2025

21 Universal indicator is placed into a colourless liquid. The colour change of the universal indicator shows that the pH of the liquid is 6. Which statement about the colourless liquid is correct? A It is an acid that turns the universal indicator red. B It is an acid that turns the universal indicator yellow. C It is an alkali that turns the universal indicator blue. D It is a neutral liquid that turns the universal indicator green.

1 marks

Answer: B

This question in 0653/13 May/June 2025