Cambridge O Level · 5070 · Paper 1 · Multiple choice
Chemistry 5070/11 May/June 2020 past paper
Cambridge O Level Chemistry (5070) Paper 1 (Multiple choice), variant 1, May/June 2020: the question paper and its official mark scheme, 40 questions worth 40 marks. Free to open, no account needed.
- Questions
- 40
- Marks
- 40
File names: 5070_s20_qp_11 · 5070_s20_ms_11
Topics in this paper
Which syllabus chapters 5070/11 May/June 2020 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 5070/11 May/June 2020
- Question 1
The diagram shows four pieces of apparatus that are used to measure the volume of a gas or liquid. Which piece of apparatus should always be filled to the same level? A burette B gas syringe C measuring cylinder D …
- Question 2
Copper(II) sulfate is prepared by reacting excess copper(II) carbonate with dilute sulfuric acid. CuCO3(s) + H2SO4(aq) → CuSO4(aq) + CO2(g) + H2O(l) Which two pieces of apparatus are needed to obtain copper(II) sulfate crystals by this reaction? 1 thermometer 2 …
- Question 3
A paper chromatography experiment is carried out to find an Rf value for Fe3+(aq). The result is shown. solvent front starting line y x Fe3+ To make the spot containing Fe3+(aq) more visible, the paper is sprayed with aqueous sodium …
- Question 4
Aluminium chloride is dissolved in water and the resulting solution is divided between three test-tubes. Which row gives the reagents for three tests which could be used to confirm the presence of aluminium chloride? test-tube 1 test-tube 2 test-tube 3 …
- Question 5
Which statement about methods of purification and analysis is correct? A A liquid that boils over a range of temperatures may still be 100% pure. B An insoluble substance may be separated from water by crystallisation. C Chromatography may only …
- Question 6
Which changes in pressure and temperature would both result in a decrease in the volume of a fixed mass of gas? A Decrease the pressure and decrease the temperature. B Decrease the pressure and increase the temperature. C Increase the …
- Question 7
Which definition of isotopes is correct? A atoms of different elements which have the same number of electrons B atoms of different elements which have the same number of neutrons C atoms of the same element which have different numbers …
- Question 8
Which ion has the most shells that contain electrons? A Al 3+ B Be2+ …
- Question 9
Which substance conducts electricity both when solid and when molten? A an alloy B a hydrocarbon C a metal oxide D a salt
- Question 10
Which substance is an ionic compound? A ammonia B calcium chloride C ethanoic acid D hydrogen chloride
- Question 11
The dot-and-cross diagrams for four compounds are shown. Which diagram is correct? (Note that only the outer shell electrons are shown.) …
- Question 12
Element X has a lattice of positive ions and a ‘sea of electrons’. …
- Question 13
A chicken egg has a mass of 60 g. The egg shell is 10% of the total mass. The egg shell is made of calcium carbonate. What is the mass of calcium in the egg shell? …
- Question 14
Ethanol can be made by the reaction shown. C2H5Br + NaOH → C2H5OH + NaBr If 5.00 g of C2H5Br produces 1.59 g of ethanol, what is the molar percentage yield of ethanol? [Mr: C2H5Br, 109; C2H5OH, …
- Question 15
An aqueous solution contains 0.01 mol of Zn2+(aq) and 0.01 mol of Cu2+(aq). Aqueous sodium hydroxide is added until in excess. After shaking, the mixture is filtered. What remains on the filter paper? A 0.01 mol of a white hydroxide …
- Question 16
Which arrangement is used to electroplate copper onto a steel key? electrolyte anode (positive electrode) cathode (negative electrode) A aqueous copper(II) sulfate piece of pure copper steel key B aqueous copper(II) sulfate steel key piece of pure copper C dilute …
- Question 17
The rate of reaction between calcium carbonate and hydrochloric acid is measured in three separate experiments. dilute hydrochloric acid mass balance 2 g calcium carbonate cotton wool In experiment 1, the calcium carbonate is powdered and an excess of hydrochloric …
- Question 18
Pieces of zinc are added to aqueous copper(II) sulfate. Cu2+(aq) + Zn(s) → Zn2+(aq) + Cu(s) Which statement is correct? A Cu2+(aq) is oxidised to Cu(s) by gaining electrons. B Cu2+(aq) is reduced to Cu(s) by losing electrons. C Zn(s) …
- Question 19
The oxide of element X reacts with acids to form salts. Which statement about element X or its oxide is correct? A X conducts electricity. B X is a non-metal. C The oxide is a gas at room temperature and …
- Question 20
Nitrogenous fertilisers promote plant growth and crop yield. Which compound contains the greatest mass of nitrogen in 100 g of fertiliser? A KNO3 B NH4NO3 C (NH4)2SO4 D (NH4)2HPO4
- Question 21
Which aqueous reagent liberates ammonia from ammonium nitrate on warming? A calcium nitrate B potassium hydroxide C sodium chloride D sulfuric acid
- Question 22
Which statement about sulfuric acid is correct? A It is manufactured by heating hydrogen, oxygen and sulfur together. B It is used as a battery acid. C It is used as a detergent. D It is used to neutralise alkaline …
- Question 23
The diagram shows part of the Periodic Table. Li Ca Cl Which element has the highest proton number and which element has the largest number of valence electrons? highest proton number highest number of valence electrons A Ca Ca B …
- Question 24
A lump of element X can be cut by a knife. During its reaction with water, X floats and melts. What is X? A calcium B copper C magnesium D potassium
- Question 25
Which statement about the properties of some elements is correct? A All noble gases are unreactive due to having eight electrons in their outer shells. B The Group VII element astatine, At2, is expected to be a black solid at …
- Question 26
Which diagram shows the structure of an alloy? …
- Question 27
Which element can only be extracted from its ore using electrolysis? A calcium B copper C lead D silver
- Question 28
The equations show reactions taking place in the blast furnace. In which reaction is an acidic impurity, present in iron ore, removed? …
- Question 29
Which diagram correctly shows the conditions necessary for the rusting of iron and also the metal that can be used to prevent rusting by sacrificial protection? O2 only copper iron A O2 only magnesium iron …
- Question 30
In the electrolysis of molten aluminium oxide, which statement is correct? A The molar ratio of aluminium to oxygen gas formed is …
- Question 31
Which row correctly compares carbon dioxide and methane? both contain carbon both are described as a greenhouse gas both lower the pH of water when they dissolve in it …
- Question 32
Sea water is not safe to drink. It can be converted into drinkable water by desalination. What does desalination involve? A adding chlorine to kill bacteria B boiling the water to sterilise it C removing the salt by filtration D …
- Question 33
Fats are essential components of the human diet. The diagram shows a fat molecule. …
- Question 34
A molecule of the compound C4H6 is shown. …
- Question 35
The molecules of two hydrocarbon compounds X and Y each contain only four carbon atoms. X is saturated and Y is unsaturated. Which statements are correct? 1 Under suitable conditions Y polymerises. 2 The complete combustion of 1 mole of …
- Question 36
Which conversions involve oxidation? 1 ethanol → carbon dioxide + water 2 ethanol → ethanoic acid 3 ethene → poly(ethene) A 1 only B 2 only C 1 and 2 only …
- Question 37
Compound T reacts with magnesium, aqueous sodium hydroxide and ethanol. Which group does T contain? A C OH …
- Question 38
Which type of reaction could be used in the polymerisation of ethene? A addition B condensation C cracking D esterification
- Question 39
Insulin is a protein made in the human body. Which statements about insulin are correct? 1 It is a condensation polymer. 2 It is a synthetic polymer. 3 When hydrolysed it produces only one monomer. 4 It contains amide linkages. …
- Question 40
Which statement about polymers is correct? A Nylon and Terylene are produced by addition polymerisation. B Nylon and Terylene both contain the amide linkages. C Simple sugars are produced by hydrolysing proteins. D Starch contains the elements carbon, hydrogen and …
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