Cambridge O Level · 5070 · Paper 1 · Multiple choice
Chemistry 5070/11 Oct/Nov 2019 past paper
Cambridge O Level Chemistry (5070) Paper 1 (Multiple choice), variant 1, Oct/Nov 2019: 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
- 28
File names: 5070_w19_qp_11 · 5070_w19_ms_11
Grade thresholds for 5070/11 Oct/Nov 2019
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 |
|---|---|---|---|---|
| 28 | 23 | 18 | 16 | 14 |
Topics in this paper
Which syllabus chapters 5070/11 Oct/Nov 2019 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 5070/11 Oct/Nov 2019
- Question 1
The concentration of aqueous sodium carbonate can be found by reaction with hydrochloric acid of known concentration. The indicator methyl orange is used. Which items of equipment are needed? A burette, measuring cylinder, gas syringe B burette, measuring cylinder, thermometer …
- Question 2
Which process is involved in all of the following? 1 obtaining copper(II) sulfate crystals from aqueous copper(II) sulfate 2 obtaining ethanol from the fermentation of glucose 3 obtaining nitrogen from liquid air A crystallisation B evaporation C filtration D fractional …
- Question 3
In which reaction is a white precipitate present when the reaction is complete? A Excess aqueous barium nitrate is added to aqueous sodium chloride. B Excess aqueous sodium hydroxide is added to aqueous aluminium chloride. C Excess aqueous sodium hydroxide …
- Question 4
Which three elements exist as diatomic molecules at room temperature? A hydrogen, oxygen, helium B nitrogen, chlorine, neon C nitrogen, oxygen, fluorine D oxygen, chlorine, helium
- Question 5
Sulfur dioxide is a gas that is prepared by heating sodium sulfite with hydrochloric acid. It is an acidic gas. Sulfur dioxide is more dense than air. Which set of apparatus is suitable for preparing and collecting a dry sample …
- Question 6
Which diagram best represents the structure of a solid metal? …
- Question 7
Hydrogen sulfide burns in an excess of oxygen according to the equation shown. …
- Question 8
Which row correctly identifies the different formulae of ethene and of its homologous series? CH2 C2H4 CnH2n A empirical formula molecular formula general formula B empirical formula general formula molecular formula C general formula molecular formula empirical formula D molecular …
- Question 9
Ammonia is manufactured from nitrogen and hydrogen by the Haber process. …
- Question 10
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? …
- Question 11
The diagram shows an electrolysis experiment using inert electrodes. L M aqueous copper(II) sulfate electrolyte dilute sulfuric acid electrolyte Which row shows what happens to the concentration of the electrolyte in L and in M as the electrolysis proceeds? …
- Question 12
Molten sodium chloride is electrolysed. Which equation correctly shows the reaction that occurs at the cathode? A 2Cl …
- Question 13
An energy profile diagram is shown. energy progress of reaction products R reactants What does the arrow R on the diagram represent? A an endothermic energy change B the activation energy C the energy taken in by the reactants D …
- Question 14
Which statement about exothermic and endothermic reactions is correct? A In an endothermic reaction, energy is used to break bonds but no energy is released when bonds form. B In an endothermic reaction, energy is released when bonds form but …
- Question 15
Gas P decomposes to form gas Q. xP → yQ Two experiments are carried out to investigate the rate of reaction. The conditions are the same except that two different temperatures, T1 and T2, are used. The results are plotted …
- Question 16
In which reaction is the underlined substance reduced? …
- Question 17
The equation for an industrial process is shown. …
- Question 18
Sodium hydroxide is added to a solution to alter its pH. A neutral solution is formed. Which statement is correct? A Sodium hydroxide is an acid and reacts with an alkali to form water as a product. B Sodium hydroxide …
- Question 19
Sodium chloride is dissolved in distilled water. Universal indicator is added to the solution. What is the colour of the universal indicator? A blue (weak alkali) B green (neutral) C purple (strong alkali) D red (acidic)
- Question 20
Which statement about ammonia is correct? A It is a colourless, odourless gas. B It is a gas that turns damp blue litmus paper red. C It is formed when potassium nitrate is heated with aqueous sodium hydroxide and aluminium. …
- Question 21
Which statement gives reasons why ammonium sulfate can be used as a fertiliser? A It contains nitrogen and phosphorous which are essential constituents of plant protein. B It contains nitrogen to promote plant growth and is soluble in water. C …
- Question 22
Sulfuric acid is manufactured using the contact process. The equations for the reactions in the process are shown. reaction 1 2SO2(g) + O2(g) 2SO3(g) …
- Question 23
Three statements about the elements carbon, nitrogen and sulfur are shown. 1 They are in groups next to each other in the Periodic Table. 2 Their neutron to proton ratios are all two to one. 3 They each form an …
- Question 24
What is a property of halogens? A Their atoms decrease in size down the group. B Their melting points increase down the group. C They conduct electricity when molten. D Their silver salts are all soluble in water.
- Question 25
Part of the Periodic Table shows the positions of four elements. These are not the elements’ actual symbols. Which element has a high melting point and a variable oxidation state? …
- Question 26
Brass is made from copper and zinc. It has many uses. Brass is 1 of these two elements. Brass is used in electrical plugs because it is an electrical 2 . Which words correctly complete gaps 1 and …
- Question 27
Metal carbonates decompose when heated. Which carbonate is most stable to heat? A calcium carbonate B copper(II) carbonate C lead(II) carbonate D zinc carbonate
- Question 28
Tin is a metal between iron and lead in the reactivity series. Which method is used for the extraction of tin from its ores? A electrolysis of the molten ore B heat alone C heat with aluminium powder D heat …
- Question 29
Aluminium is extracted from aluminium oxide by electrolysis. waste gases carbon cathode carbon anodes purified aluminium oxide dissolved in molten cryolite molten aluminium Which statement about this electrolysis is correct? A Aluminium ions gain electrons to form aluminium. B Cryolite …
- Question 30
Methane and sulfur dioxide are two air pollutants found in the Earth’s atmosphere. Which row correctly identifies one source of each gas? one source of methane one source of sulfur dioxide A decaying plants photochemical reactions B decaying plants volcanoes …
- Question 31
The water supply can be purified by filtration and chlorination. Which substance remains in the water supply after these treatments? A fine sand B harmful microbes C mineral salts D solid organic matter
- Question 32
Which statements are true for homologous series? 1 Each series contains saturated compounds. 2 The compounds in each series are unreactive. 3 Each series has a general formula. 4 Each series has a gradation in physical properties. …
- Question 33
Alkanes are saturated compounds containing carbon and hydrogen only. Structures …
- Question 34
When butene reacts with bromine, which compound could be made? …
- Question 35
How many structural isomers with the formula C4H10O are alcohols? …
- Question 36
Which statements about the alcohol CH3CH2CH2OH are correct? 1 When CH3CH2CH2OH is oxidised, it forms propanoic acid. 2 CH3CH2CH2OH burns in the air to form carbon dioxide and water. 3 CH3CH2CH2OH can be formed by the addition reaction between ethene …
- Question 37
Propanoic acid reacts with calcium carbonate. The products of this reaction are calcium propanoate, carbon dioxide and water. What is the equation for this reaction? A 2C2H5COOH + Ca2CO3 → 2C2H5COOCa + CO2 …
- Question 38
An acid reacts with an alcohol to form an ester and water. O O CH3CH2C CH3CH2COOH + CH3CH2OH …
- Question 39
Part of a polymer chain is shown. …
- Question 40
Which statement about polymers is correct? A Fats and nylons all contain the linkage. B Monomers used in condensation polymerisation must contain both –CO2H and –OH groups. C Poly(ethene) will decolourise bromine. D Proteins with the linkage are biodegradable as …
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