Cambridge O Level · 5070 · Paper 1 · Multiple choice
Chemistry 5070/11 Oct/Nov 2015 past paper
Cambridge O Level Chemistry (5070) Paper 1 (Multiple choice), variant 1, Oct/Nov 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
- 29
File names: 5070_w15_qp_11 · 5070_w15_ms_11
Grade thresholds for 5070/11 Oct/Nov 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 |
|---|---|---|---|---|
| 29 | 23 | 18 | 16 | 14 |
Topics in this paper
Which syllabus chapters 5070/11 Oct/Nov 2015 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 5070/11 Oct/Nov 2015
- Question 1
Which process is used in the preparation of soluble salts? A electrolysis B evaporation C melting D precipitation
- Question 2
Which positive ions are present in aqueous copper(II) sulfate? A copper ions only B copper ions and hydrogen ions C sulfate ions only D sulfate ions and hydroxide ions
- Question 3
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 4
Two containers, one of methane and one of butane, are placed at the same distance from a naked flame. Both gases are released at the same time. The methane gas reaches the flame and catches fire before the butane gas …
- Question 5
Metal X oxidises in air. The formula of the oxide is XO. X displaces zinc from aqueous zinc nitrate. Which could be X? A aluminium B lead C magnesium D sodium
- Question 6
Which is a compound? A air B carbon C oxygen D steam
- Question 7
How is a calcium ion, Ca2+, formed from a calcium atom? A by gaining two electrons B by gaining two protons C by losing two electrons D by losing two protons
- Question 8
An oxygen atom contains 8 electrons, 8 protons and 10 neutrons. What is the nucleon number of this atom? …
- Question 9
A molecule of sulfuric acid has the structural formula shown. …
- Question 10
A metal consists of a lattice of positive ions in a ‘sea of electrons’. What happens to the electrons and positive ions in a metal wire when an electric current is passed through it? electrons positive ions A replaced by …
- Question 11
The equation shown represents the neutralisation of aqueous sodium hydroxide with dilute sulfuric acid. 2NaOH(aq) + H2SO4(aq) → Na2SO4(aq) + 2H2O(l) How much sulfuric acid is required to neutralise 100 cm3 of 1.0 mol / dm3 NaOH? A 50 cm3 …
- Question 12
Which change in conditions increases the energy of particles in a reaction? A increase in concentration B increase in pressure C increase in temperature D presence of a catalyst
- Question 13
Which change is endothermic? A CH4(g) …
- Question 14
The enthalpy changes when methane, butane and octane are burned completely in oxygen are shown below. enthalpy change (kJ / mol) methane, CH4 –890 butane, C4H10 –2877 octane, C8H18 –5512 Which are the enthalpy changes when propane and pentane are …
- Question 15
In the ionic solid zinc phosphide, Zn3P2, what is the formula of the phosphide ion? …
- Question 16
Iron is produced in the blast furnace. waste gases raw materials hot air slag molten iron Which statement about this process is correct? A Carbon is oxidised to carbon dioxide. B Carbon monoxide is produced by the thermal decomposition of …
- Question 17
The energy profile diagram for a reaction is shown. products …
- Question 18
In which reaction is nitric acid acting as an oxidising agent? A Cu + 4HNO3 → Cu(NO3)2 …
- Question 19
Which occurs during the electrolysis of dilute sulfuric acid? A Hydrogen and oxygen are formed in the ratio two volumes of oxygen to one volume of hydrogen. B Hydrogen is formed at the positive electrode. C Oxide ions are oxidised …
- Question 20
Methanol is made in industry by a reaction between carbon monoxide and hydrogen. CO(g) + 2H2(g) CH3OH(g) …
- Question 21
Which statement about graphite is not correct? A It burns to form carbon dioxide. B It is a carbon compound. C It is a giant molecular substance. D It is used as a lubricant.
- Question 22
Ammonium nitrate, NH4NO3, is an artificial fertiliser produced from ammonia. What is an advantage of using ammonium nitrate as a fertiliser? A It contains a large percentage by mass of nitrogen. B It gives off ammonia gas. C Nitrates are …
- Question 23
Four metals and hydrogen are arranged in order of decreasing reactivity. potassium decrease in reactivity aluminium zinc hydrogen copper Which statement about these elements is correct? A Aluminium is formed when aluminium oxide is heated with hydrogen. B Copper displaces …
- Question 24
Which pair of substances reacts to form a salt and water only? A aqueous sodium chloride and aqueous silver nitrate B aqueous sodium hydroxide and dilute ethanoic acid C aqueous sodium carbonate and dilute sulfuric acid D zinc and dilute …
- Question 25
An element is burned in an excess of oxygen. Which statement about the oxide formed is always correct? A The mass of oxide formed is greater than the mass of element burned. B The oxide formed is a crystalline solid. …
- Question 26
Which reaction does not involve neutralisation? A H2SO4(aq) + 2NH3(aq) → (NH4)2SO4(aq) B H2SO4(aq) + BaCl 2(aq) → BaSO4(s) + 2HCl (aq) C H2SO4(aq) + CuO(s) → CuSO4(aq) …
- Question 27
Which element described in the table is a transition metal? number of oxidation states coloured compounds melting point density A one no high low B two no low high C two yes high high D two yes low low
- Question 28
Three different elements react by losing electrons. The ions formed all have the electronic configuration 2,8. Which statement about these elements is correct? A They are in the same group. B They are in the same period. C They are …
- Question 29
An alloy of aluminium is used in the construction of aircraft. Why is pure aluminium never used? A Pure aluminium cannot be manufactured. B Pure aluminium conducts electricity. C Pure aluminium is less dense than its alloys. D Pure aluminium …
- Question 30
What happens when a strip of silver is immersed in an aqueous solution of copper(II) sulfate? A Bubbles of gas will appear. B No reaction occurs. C Pink copper will be deposited on the silver strip. D The silver strip …
- Question 31
The flow chart shows how impure water can be treated to produce drinkable water. impure water drinkable water pass through large-sized gravel pass through small-sized gravel pass through carbon pass chlorine through it What is not removed from the water …
- Question 32
Which property of a liquid ester can be used to check its purity before use as a food flavouring? A boiling point B colour C smell D solubility in water
- Question 33
Which alcohol will, on oxidation, produce CH3CH2CO2H? A CH3OH B CH3CH2OH C CH3CH2CH2OH D HOCH2CH2CH2OH
- Question 34
The diagram shows the structure of an organic acid. …
- Question 35
A carbohydrate such as starch can be represented as shown. …
- Question 36
P is a polymer that ● has six carbon atoms in each of the monomers from which it was formed, ● is not a polyester, ● was formed using condensation polymerisation. What is the partial structure of P? C (CH2)4 …
- Question 37
What are the products of photosynthesis? A carbon dioxide and oxygen B carbon dioxide and water C glucose and water D glucose and oxygen
- Question 38
Which diagram shows the structure of an alloy? …
- Question 39
Hydrogen and nitrogen react to form ammonia. …
- Question 40
Which statement about the hydrocarbon C2H4 is not correct? A It contains a double bond. B It decolourises bromine water. C It forms a condensation polymer. D It forms an alcohol when reacted with steam. To avoid the issue of …
Other Chemistry papers from Oct/Nov 2015
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