Cambridge O Level · 5070 · Paper 1 · Multiple choice
Chemistry 5070/12 May/June 2015 past paper
Cambridge O Level Chemistry (5070) Paper 1 (Multiple choice), variant 2, May/June 2015: the question paper and its official mark scheme, 40 questions, with the grade thresholds. Free to open, no account needed.
- Questions
- 40
- Marks
- 40
- Grade A from
- 32
File names: 5070_s15_qp_12 · 5070_s15_ms_12
Grade thresholds for 5070/12 May/June 2015
The minimum raw marks Cambridge set for each grade on this component (out of 40). Thresholds change every session and variant, so always compare your score with the paper you actually sat.
| A | B | C | D | E |
|---|---|---|---|---|
| 32 | 25 | 20 | 17 | 15 |
Topics in this paper
Which syllabus chapters 5070/12 May/June 2015 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 5070/12 May/June 2015
- Question 1
The fractional distillation apparatus shown is being used to separate a mixture of two liquids. A thermometer is missing from the apparatus. Where should the bulb of the thermometer be placed? heat cold water in water out …
- Question 2
The concentration of aqueous sodium carbonate can be found by reaction with hydrochloric acid of known concentration using the indicator methyl orange. Which items of equipment are needed? A burette, measuring cylinder, gas syringe B burette, measuring cylinder, thermometer C …
- Question 3
Which molecules all contain one or more double covalent bonds? A chlorine, nitrogen and methane B chlorine, oxygen and ethene C oxygen, hydrogen chloride and ethene D oxygen, carbon dioxide and ethene
- Question 4
The metals Cr, Co, Fe and Mn are all transition elements. Which particles have the same number of electrons? A Co2+ and Cr B Co2+ and Fe3+ C Cr and Mn2+ D Fe3+ and Mn2+
- Question 5
Which substance has metallic bonding? conducts electricity state of product formed on reaction with oxygen when solid when liquid …
- Question 6
Which compound contains only eight covalent bonds? CH2OH CH2OH A CH2OH CH3 B COOH COOH C COOH CH2OH D
- Question 7
The table shows the results of two reactions of an aqueous solution of a salt. reagents final observation excess aqueous sodium hydroxide white precipitate dilute nitric acid and aqueous silver nitrate white precipitate What could be the identity of the …
- Question 8
Which row shows correct statements about the speed at which a gas diffuses? effect of molecular mass effect of temperature A higher molecular mass diffuses faster diffusion is faster at higher temperatures B higher molecular mass diffuses faster diffusion is …
- Question 9
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 10
Using the Periodic Table for the relative atomic masses, which has the greatest mass? A 0.1 moles of iodine molecules, …
- Question 11
Ammonia is manufactured from nitrogen and hydrogen by the Haber process. …
- Question 12
What is the relative molecular mass, Mr, of CuSO4.5H2O? …
- Question 13
The list shows some substances that conduct electricity. 1 aqueous sodium chloride 2 copper 3 graphite In which substance(s) are only electrons involved in the conduction? A 1 and …
- Question 14
Caesium is a Group I metal. Which reaction involving this element would not produce hydrogen? A adding caesium to ethanoic acid B adding caesium to water C electrolysing aqueous caesium chloride D electrolysing molten caesium chloride
- Question 15
The energy diagram represents a chemical reaction carried out both with a catalyst and without a catalyst. …
- Question 16
Hydrogen reacts with iodine to form hydrogen iodide. This is a slow reaction. …
- Question 17
Acidified potassium manganate(VII) is used as a test reagent. When it is added to an aqueous solution of compound X, the colour of the test reagent changes from 1 . This colour change shows that X is 2 . Which …
- Question 18
You are supplied with dilute hydrochloric acid together with • copper solid, • magnesium solid, • aqueous lead nitrate, • aqueous silver nitrate. How many different insoluble chlorides could you make? …
- Question 19
In the graph, curve 1 was obtained by observing the decomposition of 100 cm3 of 1.0 mol / dm3 hydrogen peroxide solution, catalysed by manganese(IV) oxide. …
- Question 20
A colourless solution reacts with magnesium to form a salt and hydrogen gas. How is this solution acting? A as a base B as a reducing agent C as a solvent D as an acid
- Question 21
The equation shows a redox reaction between iron(II) chloride and chlorine gas. 2FeCl 2 + Cl 2 → 2FeCl 3 Which equation describes the reduction process in this reaction? A 2Cl – → Cl …
- Question 22
Which compound produces the greatest number of ions when 1 mole is dissolved in water? A aluminium sulfate B ammonium carbonate C ammonium nitrate D calcium nitrate
- Question 23
The equation for the reaction taking place during the production of ammonia is shown. …
- Question 24
Which element is sodium? melting point in °C electrical conduction density in g / cm3 A 1535 good …
- Question 25
From their position in the Periodic Table, what would you expect the elements titanium, vanadium, chromium and cobalt to have in common? 1 variable oxidation states 2 coloured compounds 3 high melting points …
- Question 26
Which two gases do not damage limestone buildings? A nitrogen and carbon monoxide B nitrogen dioxide and carbon monoxide C nitrogen dioxide and carbon dioxide D sulfur dioxide and carbon dioxide
- Question 27
The following facts are known about four metals, …
- Question 28
Which metal has to be extracted from its ore by electrolysis? A Fe B Na C Pb D Zn
- Question 29
Aluminium is produced by the electrolysis of molten aluminium oxide. waste gases carbon electrode (negative) carbon electrodes (positive) purified aluminium oxide dissolved in molten cryolite molten aluminium Which statement about the process is correct? A Aluminium ions are reduced to …
- Question 30
Hydrides are compounds of an element and hydrogen only. Which statement is not correct? A The hydride of carbon that contains four hydrogen atoms and one carbon atom, is a gas called methane. B The hydride of chlorine dissolves in …
- Question 31
In the extraction of iron from its ore in the blast furnace, limestone is added. What is the function of the limestone? A to decrease the melting point of the iron B to produce carbon monoxide for the reduction of …
- Question 32
Two pieces of iron, one with zinc attached and the other with copper attached, are placed separately in water as shown. Y water iron zinc Z water iron copper Which statements are correct? 1 The iron in Y will not …
- Question 33
A diagram of a biogas generator is shown. gas pipe outlet for slurry digester inlet for vegetable matter decaying vegetable matter The gas, if collected, can be used as a fuel. However, if the gas is allowed to escape it …
- Question 34
Which statement about alkanes is correct? A Alkanes are readily polymerised. B Alkanes react with bromine by addition. C Alkanes react with chlorine by substitution. D Butane has three more carbon atoms and eight more hydrogen atoms than methane.
- Question 35
Which statement about members of the homologous series of alcohols is correct? A An alcohol with two carbon atoms in each molecule is called methanol. B Butanol can be combusted to give carbon dioxide and water only. C Ethanol is …
- Question 36
When cracked, one mole of a compound, X, produces one mole of propene and one mole of hydrogen. …
- Question 37
The diagram shows the partial structure of a polymer. …
- Question 38
Which of the following has not been prepared by reacting a carboxylic acid with an alcohol? …
- Question 39
Which statement about the properties of the four alkanes from methane to butane is not correct? A Successive members of the series differ in formula by CH2. B They increase in boiling point. C They increase in viscosity. D They …
- Question 40
Which of these polymers is a protein? A (C2H3Cl …
Other Chemistry papers from May/June 2015
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