Separation and purification — Paper 1 · IGCSE Science - Combined 0653

16 A mixture contains two liquids. One liquid has a boiling point of 120 °C and the other boils at 160 °C. water P Q R Which apparatus should be used to separate the two liquids? A P only B Q only C R only D P, Q or R

1 marks

Answer: C

This question in 0653/11 May/June 2006

14 Which diagram shows how a mixture of dyes in a food colouring can be separated? A B filter paper filter paper spot of food colouring water food colouring C D spot of food colouring filter paper filter paper spot of food colouring water water

1 marks

Answer: A

This question in 0653/11 May/June 2007

14 Which method of separation can be used to obtain pure water from aqueous potassium chloride? A chromatography B crystallisation C distillation D filtration

1 marks

Answer: C

This question in 0653/11 May/June 2008

27 Which property of the compounds in crude oil is used to separate the oil into useful fractions? A boiling point B density C melting point D solubility

1 marks

Answer: A

This question in 0653/11 May/June 2009

16 The diagram shows apparatus used to separate a mixture. mixture heat Which mixture could it be used to separate? A sand and salt B sand and sugar C salt and sugar D salt and water

1 marks

Answer: D

This question in 0653/11 May/June 2010

19 Which processes are used to purify the drinking water from reservoirs? chlorination distillation filtration 0 aO WwW D> ~ KOK KS << x

1 marks

Answer: C

This question in 0653/11 May/June 2010

14 The diagram shows apparatus used to separate a mixture. mixture heat Which mixture could it be used to separate? A sand and salt B sand and sugar C salt and sugar D salt and water

1 marks

Answer: D

This question in 0653/12 May/June 2010

18 Which processes are used to purify the drinking water from reservoirs? chlorination distillation filtration 0 aO WwW D> ~ KOK KS << x

1 marks

Answer: C

This question in 0653/12 May/June 2010

14 The diagram shows apparatus used to separate a mixture. mixture heat Which mixture could it be used to separate? A sand and salt B sand and sugar C salt and sugar D salt and water

1 marks

Answer: D

This question in 0653/13 May/June 2010

18 Which processes are used to purify the drinking water from reservoirs? chlorination distillation filtration 0 aO WwW D> ~ KOK KS << x

1 marks

Answer: C

This question in 0653/13 May/June 2010

16 Aqueous copper(II) sulfate consists of copper(II) sulfate dissolved in water. Which apparatus could not be used to remove water from this solution? A B C D heat heat heat

1 marks

Answer: B

This question in 0653/11 Oct/Nov 2010

17 Aqueous copper(II) sulfate consists of copper(II) sulfate dissolved in water. Which apparatus could not be used to remove water from this solution? A B C D heat heat heat

1 marks

Answer: B

This question in 0653/12 Oct/Nov 2010

25 Crude oil (petroleum) is heated, using the apparatus shown. Four fractions, with different boiling point ranges, are collected. thermometer crude oil heat water fraction Which term best describes crude oil? A a compound B an element C a mixture D a plastic

1 marks

Answer: C

This question in 0653/12 Oct/Nov 2010

18 Aqueous copper(II) sulfate consists of copper(II) sulfate dissolved in water. Which apparatus could not be used to remove water from this solution? A B C D heat heat heat

1 marks

Answer: B

This question in 0653/13 Oct/Nov 2010

27 Crude oil (petroleum) is heated, using the apparatus shown. Four fractions, with different boiling point ranges, are collected. thermometer crude oil heat water fraction Which term best describes crude oil? A a compound B an element C a mixture D a plastic

1 marks

Answer: C

This question in 0653/13 Oct/Nov 2010

26 Which property of the compounds in petroleum is used to separate it into useful fractions? A boiling point B density C melting point D solubility

1 marks

This question in 0653/11 May/June 2012

26 Which property of the compounds in petroleum is used to separate it into useful fractions? A boiling point B density C melting point D solubility

1 marks

Answer: A

This question in 0653/12 May/June 2012

26 Which property of the compounds in petroleum is used to separate it into useful fractions? A boiling point B density C melting point D solubility

1 marks

Answer: A

This question in 0653/13 May/June 2012

14 Aqueous copper(II) sulfate consists of copper(II) sulfate dissolved in water. Which apparatus could not be used to remove water from this solution? A B C D heat heat heat

1 marks

Answer: B

This question in 0653/12 May/June 2013

20 The diagrams show two techniques used in school chemistry laboratories for separating mixtures. 1 2 heat Which technique can also be used to purify a domestic water supply? A 1 and 2 B 1 only C 2 only D neither 1 nor 2

1 marks

Answer: B

This question in 0653/12 May/June 2013

14 Aqueous copper(II) sulfate consists of copper(II) sulfate dissolved in water. Which apparatus could not be used to remove water from this solution? A B C D heat heat heat

1 marks

Answer: B

This question in 0653/13 May/June 2013

20 Which mixture cannot be separated by distillation? A air B petroleum C salt water D sulfur and iron

1 marks

Answer: D

This question in 0653/13 May/June 2013

14 Which method of separation can be used to obtain pure water from aqueous potassium chloride? A chromatography B crystallisation C distillation D filtration

1 marks

Answer: C

This question in 0653/11 Oct/Nov 2013

14 Which method of separation can be used to obtain pure water from aqueous potassium chloride? A chromatography B crystallisation C distillation D filtration

1 marks

Answer: C

This question in 0653/12 Oct/Nov 2013

14 Which method of separation can be used to obtain pure water from aqueous potassium chloride? A chromatography B crystallisation C distillation D filtration

1 marks

Answer: C

This question in 0653/13 Oct/Nov 2013

15 A mixture contains two liquids. One liquid has a boiling point of 120 °C and the other boils at 160 °C. They are separated by fractional distillation. water heat P heat Q heat R Which apparatus is used to separate the two liquids? A P and Q B P only C Q only D R only

1 marks

Answer: D

This question in 0653/11 May/June 2014

14 A mixture contains two liquids. One liquid has a boiling point of 120 °C and the other boils at 160 °C. They are separated by fractional distillation. water heat P heat Q heat R Which apparatus is used to separate the two liquids? A P and Q B P only C Q only D R only

1 marks

Answer: D

This question in 0653/12 May/June 2014

17 A mixture contains two liquids. One liquid has a boiling point of 120 °C and the other boils at 160 °C. They are separated by fractional distillation. water heat P heat Q heat R Which apparatus is used to separate the two liquids? A P and Q B P only C Q only D R only

1 marks

Answer: D

This question in 0653/13 May/June 2014

14 Two liquids are separated by fractional distillation. This is possible because the liquids differ in their A boiling points. B colour. C density. D solubility in water.

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2014

15 Two liquids are separated by fractional distillation. This is possible because the liquids differ in their A boiling points. B colour. C density. D solubility in water.

1 marks

Answer: A

This question in 0653/12 Oct/Nov 2014

14 Two liquids are separated by fractional distillation. This is possible because the liquids differ in their A boiling points. B colour. C density. D solubility in water.

1 marks

Answer: A

This question in 0653/13 Oct/Nov 2014

14 Which method is used to obtain a solid salt from the salt solution? A crystallisation B distillation C filtration D fractional distillation

1 marks

Answer: A

This question in 0653/11 May/June 2015

15 Which processes are involved in the separation of petroleum? A condensation and crystallisation B condensation only C evaporation and condensation D evaporation only

1 marks

Answer: C

This question in 0653/12 May/June 2015

15 Which method is used to determine the number of dyes present in ink? A chromatography B crystallisation C distillation D filtration

1 marks

Answer: A

This question in 0653/13 May/June 2015

15 In an experiment, a mixture of 0.5 g of copper and 3 g of zinc is added to an excess of dilute sulfuric acid. The copper acts as a catalyst. After all the zinc has dissolved, the resulting mixture is filtered. solid X aqueous zinc sulfate and unreacted acid What is solid X and what is its mass? solid X mass of pure X A copper less than 0.5 g B copper 0.5 g C copper(II) oxide 0.5 g D copper(II) oxide greater than 0.5 g

1 marks

Answer: B

This question in 0653/11 Oct/Nov 2015

27 Petroleum is a mixture of hydrocarbons. Which method is used to separate these hydrocarbons? A crystallisation B distillation C filtration D fractional distillation

1 marks

Answer: D

This question in 0653/11 Oct/Nov 2015

15 In an experiment, a mixture of 0.5 g of copper and 3 g of zinc is added to an excess of dilute sulfuric acid. The copper acts as a catalyst. After all the zinc has dissolved, the resulting mixture is filtered. solid X aqueous zinc sulfate and unreacted acid What is solid X and what is its mass? solid X mass of pure X A copper less than 0.5 g B copper 0.5 g C copper(II) oxide 0.5 g D copper(II) oxide greater than 0.5 g

1 marks

Answer: B

This question in 0653/12 Oct/Nov 2015

26 When water is purified it is passed through large tanks of sand. What is the purpose of the sand? A to remove all harmful bacteria B to remove coloured soluble impurities C to remove small insoluble particles D to remove tree branches and other large objects

1 marks

Answer: C

This question in 0653/12 Oct/Nov 2015

15 In an experiment, a mixture of 0.5 g of copper and 3 g of zinc is added to an excess of dilute sulfuric acid. The copper acts as a catalyst. After all the zinc has dissolved, the resulting mixture is filtered. solid X aqueous zinc sulfate and unreacted acid What is solid X and what is its mass? solid X mass of pure X A copper less than 0.5 g B copper 0.5 g C copper(II) oxide 0.5 g D copper(II) oxide greater than 0.5 g

1 marks

Answer: B

This question in 0653/13 Oct/Nov 2015

21 Copper sulfate crystals are prepared by reacting copper oxide with sulfuric acid. Which process is not used in the preparation of copper sulfate crystals? A chromatography B crystallisation C evaporation D filtration

1 marks

Answer: A

This question in 0653/13 Oct/Nov 2015

14 The apparatus used to remove sand from a mixture of salt and sand is shown. funnel filter paper stirrer water salt and sand beaker 1 beaker 2 The contents of beaker 1 are stirred and then poured into the funnel above beaker 2. What is in beaker 2? A a mixture of an element and a compound B a mixture of two compounds C one compound only D one element only

1 marks

Answer: B

This question in 0653/11 May/June 2016

14 The apparatus used to remove sand from a mixture of salt and sand is shown. funnel filter paper stirrer water salt and sand beaker 1 beaker 2 The contents of beaker 1 are stirred and then poured into the funnel above beaker 2. What is in beaker 2? A a mixture of an element and a compound B a mixture of two compounds C one compound only D one element only

1 marks

Answer: B

This question in 0653/12 May/June 2016

27 Petroleum is a mixture of hydrocarbon molecules. Which row describes the method of separation of petroleum and the type of bond in hydrocarbon molecules? method of type of bond separation A distillation covalent B distillation ionic C fractional distillation covalent D fractional distillation ionic

1 marks

Answer: C

This question in 0653/12 May/June 2016

14 The apparatus used to remove sand from a mixture of salt and sand is shown. funnel filter paper stirrer water salt and sand beaker 1 beaker 2 The contents of beaker 1 are stirred and then poured into the funnel above beaker 2. What is in beaker 2? A a mixture of an element and a compound B a mixture of two compounds C one compound only D one element only

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

15 Which method is used to separate an insoluble salt from a mixture of the salt and water? A crystallisation B distillation C filtration D fractional distillation

1 marks

Answer: C

This question in 0653/12 Oct/Nov 2016

15 Which process is a physical change? A adding zinc to dilute sulfuric acid B bubbling carbon dioxide through limewater C electrolysing molten lead bromide D separating petroleum by fractional distillation

1 marks

Answer: D

This question in 0653/12 May/June 2017

21 Magnesium sulfate is a soluble solid produced by reacting excess solid magnesium oxide with dilute sulfuric acid. Which processes produce pure magnesium sulfate crystals? A distilling the reaction mixture and leaving the distillate to crystallise B evaporating the water from the reaction mixture C filtering and drying the solid from the reaction mixture D filtering the reaction mixture and leaving the filtrate to crystallise

1 marks

Answer: D

This question in 0653/12 May/June 2017

27 Which property of the compounds in petroleum is used to separate it into useful fractions? A boiling point B density C melting point D solubility

1 marks

Answer: A

This question in 0653/12 May/June 2017

21 Magnesium sulfate is a soluble solid produced by reacting excess solid magnesium oxide with dilute sulfuric acid. Which processes produce pure magnesium sulfate crystals? A distilling the reaction mixture and leaving the distillate to crystallise B evaporating the water from the reaction mixture C filtering and drying the solid from the reaction mixture D filtering the reaction mixture and leaving the filtrate to crystallise

1 marks

Answer: D

This question in 0653/13 May/June 2017

27 Which property of the compounds in petroleum is used to separate it into useful fractions? A boiling point B density C melting point D solubility

1 marks

Answer: A

This question in 0653/13 May/June 2017

15 Which process is used to separate petroleum? A crystallisation B distillation C filtration D fractional distillation

1 marks

Answer: D

This question in 0653/11 Oct/Nov 2017

15 What is the correct sequence that takes place during fractional distillation? A evaporate → condense → collect → heat B evaporate → condense → heat → collect C heat → condense → collect → evaporate D heat → evaporate → condense → collect

1 marks

Answer: D

This question in 0653/12 Oct/Nov 2017

15 Which row describes the method used to obtain salt from salt water and petrol from petroleum? salt from salt water petrol from petroleum A crystallisation distillation B crystallisation fractional distillation C filtration distillation D filtration fractional distillation

1 marks

Answer: B

This question in 0653/11 May/June 2018

15 Which method is used to separate a mixture of two liquids? A chromatography B crystallisation C filtration D fractional distillation

1 marks

Answer: D

This question in 0653/12 May/June 2018

15 Which method is used to separate a mixture of two liquids? A chromatography B crystallisation C filtration D fractional distillation

1 marks

Answer: D

This question in 0653/13 May/June 2018

20 Copper nitrate is prepared by reacting excess copper oxide with dilute nitric acid. How is a solid sample of copper nitrate obtained from the reaction mixture? A Add an excess of dilute nitric acid. B Distil the solution. C Filter the solution and dry the residue in the filter paper. D Filter the solution and crystallise the filtrate.

1 marks

Answer: D

This question in 0653/12 Feb/March 2019

14 The diagram shows apparatus used for filtration. Why can sugar and salt not be separated by using this apparatus? A They are both compounds. B They are both white. C They both dissolve in water. D They both have the same size particles.

1 marks

Answer: C

This question in 0653/11 May/June 2019

15 The diagram shows apparatus used for filtration. Why can sugar and salt not be separated by using this apparatus? A They are both compounds. B They are both white. C They both dissolve in water. D They both have the same size particles.

1 marks

Answer: C

This question in 0653/12 May/June 2019

26 Which statement shows that petroleum is a mixture? A Petroleum can be burned as a fuel. B Petroleum can be separated into fractions by distillation. C Petroleum is a fossil fuel formed over millions of years. D Petroleum is a thick, black liquid.

1 marks

Answer: B

This question in 0653/12 May/June 2019

14 The diagram shows apparatus used for filtration. Why can sugar and salt not be separated by using this apparatus? A They are both compounds. B They are both white. C They both dissolve in water. D They both have the same size particles.

1 marks

Answer: C

This question in 0653/13 May/June 2019

26 Which statement shows that petroleum is a mixture? A Petroleum can be burned as a fuel. B Petroleum can be separated into fractions by distillation. C Petroleum is a fossil fuel formed over millions of years. D Petroleum is a thick, black liquid.

1 marks

Answer: B

This question in 0653/13 May/June 2019

14 Which method is used to separate an insoluble salt from a mixture of the salt and water? A crystallisation B distillation C filtration D fractional distillation

1 marks

Answer: C

This question in 0653/12 Feb/March 2020

15 Which processes are involved in the separation of petroleum into useful fractions? A condensation and crystallisation B condensation only C evaporation and condensation D evaporation only

1 marks

Answer: C

This question in 0653/11 May/June 2020

16 Salt, sand and water are stirred together in a beaker. The salt dissolves in the water. What does the beaker contain? A a mixture of a solution and a solid B a mixture of three elements C only one compound and one solid D only one compound containing three elements

1 marks

Answer: A

This question in 0653/11 May/June 2020

14 Which methods of separation depend on the substances in a mixture having different boiling points? A crystallisation and distillation B evaporation and filtration C fractional distillation and chromatography D fractional distillation and distillation

1 marks

Answer: D

This question in 0653/12 Feb/March 2021

14 A mixture contains two liquids. One liquid has a boiling point of 120 C. The other liquid has a boiling point of 160 C. They are separated by fractional distillation. water heat heat heat P Q R Which apparatus is used to separate the two liquids? A P and Q B P only C Q only D R only

1 marks

Answer: D

This question in 0653/12 Feb/March 2022

22 Which process produces pure copper sulfate from aqueous copper sulfate? A distillation B filtration C chromatography D crystallisation

1 marks

Answer: D

This question in 0653/12 Feb/March 2022

16 What describes a solvent? A a solid that dissolves in a liquid B the amount of solid that dissolves in a liquid C the liquid in which a solid dissolves D the mixture formed when a solid dissolves in a liquid

1 marks

Answer: C

This question in 0653/11 May/June 2022

20 Some water is added to a coloured, powdered mixture. After shaking, a blue solution and a white solid are seen. water blue solution coloured, powdered white solid mixture What does the powder contain? A sodium chloride and copper(II) oxide B sodium chloride and copper(II) sulfate C barium sulfate and copper(II) oxide D barium sulfate and copper(II) sulfate

1 marks

Answer: D

This question in 0653/12 Feb/March 2023

24 Which process is used in the treatment of the water supply? A filtration B evaporation C crystallisation D chromatography

1 marks

Answer: A

This question in 0653/12 Feb/March 2024

15 Which method is used to separate an insoluble salt from a mixture of the salt and water? A crystallisation B distillation C filtration D fractional distillation

1 marks

Answer: C

This question in 0653/13 May/June 2024

26 Petroleum is separated into fractions by fractional distillation. Which row shows the correct use for the named fraction? fraction use A bitumen making road surfaces B gasoline fuel for diesel engines C naphtha fuel for cars D refinery gas making other chemicals

1 marks

Answer: A

This question in 0653/11 Oct/Nov 2024

20 The steps needed to make pure, dry magnesium sulfate crystals from magnesium oxide and dilute sulfuric acid are listed. 1 filter 2 leave to cool 3 add excess magnesium oxide to sulfuric acid and heat 4 dry 5 filter and wash 6 heat to evaporate some of the water In which order are these steps carried out? A 3  1  2  5  6  4 B 3  1  6  2  5  4 C 3  2  1  6  4  5 D 3  5  2  6  1  4

1 marks

Answer: B

This question in 0653/12 Oct/Nov 2024

25 Which method is used to separate two liquids? A crystallisation B distillation C evaporation D filtration

1 marks

Answer: B

This question in 0653/12 Feb/March 2025

27 Excess solid zinc carbonate is added to dilute hydrochloric acid in a beaker. When the reaction is complete, the beaker contains a mixture of unreacted solid zinc carbonate in a solution of zinc chloride. zinc chloride solid solution zinc carbonate Which processes are used to obtain crystals of zinc chloride from this mixture? A filtration and distillation B filtration and evaporation C filtration and oxidation D oxidation and evaporation

1 marks

Answer: B

This question in 0653/11 May/June 2025

27 Which methods of separation depend on the substances in a mixture having different boiling points? A crystallisation and simple distillation B evaporation and filtration C fractional distillation and chromatography D fractional distillation and simple distillation

1 marks

Answer: D

This question in 0653/12 May/June 2025

27 Which method is used to obtain a sample of pure, solid salt from an aqueous solution of the salt? A chromatography B crystallisation C filtration D fractional distillation

1 marks

Answer: B

This question in 0653/11 Oct/Nov 2025