Cambridge O Level · 5070 · Paper 1 · Multiple choice
Chemistry 5070/11 Oct/Nov 2011 past paper
Cambridge O Level Chemistry (5070) Paper 1 (Multiple choice), variant 1, Oct/Nov 2011: the question paper and its official mark scheme, 40 questions. Free to open, no account needed.
- Questions
- 40
- Marks
- –
File names: 5070_w11_qp_11 · 5070_w11_ms_11
Topics in this paper
Which syllabus chapters 5070/11 Oct/Nov 2011 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 5070/11 Oct/Nov 2011
- Question 1
In a titration between an acid (in the burette) and an alkali, you may need to re-use the same titration flask. Which is the best procedure for rinsing the flask? A Rinse with distilled water and then with the alkali. …
- Question 2
The labels fell off two bottles each containing a colourless solution, one of which was sodium carbonate solution and the other was sodium chloride solution. The addition of which solution to a sample from each bottle would most readily enable …
- Question 3
Oxygen was prepared from hydrogen peroxide, with manganese(IV) oxide as catalyst. The oxygen was collected as shown in the diagram. …
- Question 4
Radium (Ra) is in the same group of the Periodic Table as magnesium. What is the charge on a radium ion? …
- Question 5
How many of the molecules shown contain only one covalent bond? Cl 2 H2 HCl …
- Question 6
In which pair is each substance a mixture? A air and water B limewater and water C quicklime and limewater D sea water and air
- Question 7
A researcher notices that atoms of an element are releasing energy. Why are the atoms releasing energy? A The atoms are absorbing light. B The atoms are evaporating. C The atoms are radioactive. D The atoms react with argon in …
- Question 8
What happens when sodium chloride melts? A Covalent bonds in a giant lattice are broken. B Electrons are released from atoms. C Electrostatic forces of attraction between ions are overcome. D Molecules are separated into ions.
- Question 9
Which compound contains three elements? A aluminium chloride B iron(III) oxide C potassium oxide D sodium carbonate
- Question 10
Below are two statements about metals. 1 Metals contain a lattice of negative ions in a ‘sea of electrons’. 2 The electrical conductivity of metals is related to the mobility of the electrons in the structure. Which is correct? A …
- Question 11
What is the ratio of the number of molecules in 71 g of gaseous chlorine to the number of molecules in 2 g of gaseous hydrogen? [Relative atomic masses Ar (atomic weights): H, 1: Cl, …
- Question 12
What is the relative molecular mass Mr of CuSO4.5H2O? …
- Question 13
How can sodium be manufactured? A by electrolysing aqueous sodium chloride B by electrolysing aqueous sodium hydroxide C by electrolysing molten sodium chloride D by heating sodium oxide with carbon
- Question 14
Which statement about the electrolysis of an aqueous solution of copper(II) sulfate with platinum electrodes is correct? A Oxygen is given off at the positive electrode. B The mass of the negative electrode remains constant. C The mass of the …
- Question 15
Which pair of statements about the combustion of a carbohydrate and its formation by photosynthesis is not correct? combustion photosynthesis A chemical energy converted to heat energy chemical energy converted to light energy B no catalyst needed catalyst needed C …
- Question 16
The following reversible reaction takes place in a closed vessel at constant temperature. …
- Question 17
Sulfur dioxide reacts with aqueous bromine according to the following equation. SO2(g) + Br2(aq) …
- Question 18
An excess of calcium hydroxide is added to an acidic soil. What happens to the pH of the soil? change in pH final pH A decrease 5 B decrease 7 C increase 7 D increase 10
- Question 19
Which substance would not be used for preparing a pure sample of crystalline magnesium sulfate by reaction with dilute sulfuric acid? A magnesium carbonate B magnesium hydroxide C magnesium nitrate D magnesium oxide
- Question 20
Ammonium sulfate and potassium sulfate are salts which can be found in fertilisers. A sample of a fertiliser is warmed with aqueous sodium hydroxide and a gas with pH10 is given off. Which salt must be in the fertiliser and …
- Question 21
The table gives the formulae of the catalysts used in some industrial processes. process catalyst Haber process Fe + Mo Contact process V2O5 cracking of alkanes Al 2O3 + SiO2 polymerisation of ethene Al (C2H5)3 + TiCl 4 manufacture of …
- Question 22
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 23
Which statement about the elements chlorine, bromine and iodine is correct? A They are all gases at room temperature and pressure. B They are in the same period of the Periodic Table. C They become darker in colour from chlorine …
- Question 24
The diagram shows steel wool inside a test-tube. The test-tube is inverted in water, trapping air inside. What will be the water level inside the tube after several days? air water steel wool …
- Question 25
Which carbonate decomposes on heating to give a black solid and a colourless gas? A calcium carbonate B copper(II) carbonate C sodium carbonate D zinc carbonate
- Question 26
Iron is manufactured in the blast furnace. Which statement about iron and its manufacture is not true? A Iron ore is readily abundant. B It is a continuous process. C Pure iron is produced. D The reducing agent is cheap.
- Question 27
Which row shows the three metals in the correct order of decreasing reactivity? most active least active A copper zinc iron B iron copper zinc C iron zinc copper D zinc iron copper
- Question 28
Which gas cannot be removed from the exhaust gases of a petrol-powered car by its catalytic converter? A carbon dioxide B carbon monoxide C hydrocarbons D nitrogen dioxide
- Question 29
Which equation shows a reaction that would actually take place? A 2MgO …
- Question 30
Which statement shows that diamond and graphite are different forms of the element carbon? A Both have giant molecular structures. B Complete combustion of equal masses of each produces equal masses of carbon dioxide as the only product. C Graphite …
- Question 31
What is the purpose of vanadium(V) oxide in the Contact Process? A It oxidises sulfur to sulfur dioxide. B It oxidises sulfur to sulfur trioxide. C It speeds up the conversion of sulfur dioxide into sulfur trioxide. D It speeds …
- Question 32
A sample of tap water gave a white precipitate with acidified silver nitrate. What does this show about the tap water? A It contained chloride. B It contained harmful microbes. C It contained nitrates. D It had not been filtered.
- Question 33
Which noble gas is present in the largest percentage by volume in air? A argon B helium C krypton D neon
- Question 34
A hydride is a compound containing only two elements, one of which is hydrogen. Which element forms the most hydrides? A carbon B chlorine C nitrogen D oxygen
- Question 35
The structural formulae of some organic compounds are shown below. …
- Question 36
Which compound is manufactured by reacting ethene with steam in the presence of a heated catalyst? …
- Question 37
A hydrocarbon, C3Hy, burns in air to form carbon dioxide and water. C3Hy(g) …
- Question 38
Which pair of macromolecules both contain the linkage shown? …
- Question 39
Under certain conditions 1 mole of ethane reacts with 2 moles of chlorine in a substitution reaction. What is the formula of the organic product in this reaction? A C2H5Cl B C2H4Cl 2 C C2H2Cl 4 D CH2Cl 2
- Question 40
Shown below are some properties of compound X. ● reacts with potassium carbonate to produce carbon dioxide ● reacts with ethanol to produce a sweet-smelling liquid ● reacts with sodium hydroxide to produce a salt What is X? A ethanol …
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