Cambridge O Level · 5070 · Paper 1 · Multiple choice
Chemistry 5070/12 Oct/Nov 2012 past paper
Cambridge O Level Chemistry (5070) Paper 1 (Multiple choice), variant 2, Oct/Nov 2012: the question paper and its official mark scheme, 40 questions. Free to open, no account needed.
- Questions
- 40
- Marks
- –
File names: 5070_w12_qp_12 · 5070_w12_ms_12
Topics in this paper
Which syllabus chapters 5070/12 Oct/Nov 2012 tested, by marks. Each chapter links to every past-paper question on it.
Questions in 5070/12 Oct/Nov 2012
- Question 1
Which is a property of hydrogen gas? A It burns in air. B It has an unpleasant smell. C It relights a glowing splint. D It turns moist litmus paper red.
- Question 2
Four identical balloons are filled with different gases all at the same temperature and pressure. ammonia NH3 carbon dioxide CO2 ethene C2H4 nitrogen …
- Question 3
Hydrogen chloride is very soluble in water, whereas chlorine is only slightly soluble in water. Both gases can be dried using concentrated sulfuric acid. Which diagram represents the correct method of obtaining pure dry chlorine from damp chlorine containing a …
- Question 4
Two particles have the compositions shown. electrons neutrons protons …
- Question 5
Which of the following is not a mixture? A ethanol B petrol C steel D tap water
- Question 6
When concentrated aqueous sodium chloride is electrolysed using carbon electrodes, which row correctly states the products at the electrodes and the solution remaining? cathode (–) anode (+) solution remaining A chlorine hydrogen hydrochloric acid B hydrogen chlorine sodium hydroxide C …
- Question 7
Carbon and silicon are both in Group IV of the Periodic Table, but at room temperature CO2 is a gas whereas SiO2 is a solid. Which statement explains this? A Covalent bonding is weaker in CO2. B Covalent bonds in …
- Question 8
An ionic compound has the formula X3Y2. To which groups of the Periodic Table do X and Y belong? group for X group for Y A II III B III II C II …
- Question 9
When two solutions are mixed, a precipitate of a magnesium compound is formed. Which salt would be formed from solution as a precipitate? A MgCO3 B MgCl 2 C Mg(NO3)2 D MgSO4
- Question 10
Which substance has metallic bonding? conducts electricity when solid when liquid state of substance formed on reaction with oxygen …
- Question 11
In separate experiments sulfur dioxide, a reducing agent, was passed through acidified solutions of potassium dichromate(VI) and potassium manganate(VII). Which pair describes the colour changes observed in the experiments? colour change of potassium dichromate(VI) colour change of potassium manganate(VII) A …
- Question 12
In the experiment shown in the diagram, the bulb lights and two colourless gases are formed, one at each electrode. bulb +ve –ve X inert electrodes What is X? A concentrated aqueous sodium chloride B dilute sulfuric acid C methanol …
- Question 13
0.5 mol / dm3 hydrochloric acid is added gradually to a flask containing 20 cm3 of 2 mol / dm3 sodium hydroxide solution. What is the total volume, in cm3, of the mixture in the flask when the solution is …
- Question 14
Two of the reactions used in the manufacture of nitric acid, HNO3, are shown. 2NO …
- Question 15
Sulfur trioxide is produced by the following reaction. 2SO2(g) + O2(g) 2SO3 …
- Question 16
Solution X has a pH value of 12. It is added to aqueous ammonium chloride and the mixture is warmed. Which information is correct? solution X is when the mixture is warmed A acidic ammonia gas is given off B …
- Question 17
Which compound contains only eight covalent bonds? CH2OH CH2OH A CH2OH CH3 B COOH COOH C COOH CH2OH D
- Question 18
Why does an increase in pressure increase the rate of reaction between the gases nitrogen and hydrogen in the manufacture of ammonia? A The activation energy is lowered. B The molecules collide more frequently. C The molecules have more energy. …
- Question 19
The diagram shows the steps by which carbon dioxide can be converted into organic products and finally returned to the atmosphere. Which step is an example of combustion? CO2 C6H12O6 C2H5OH CH3CO2H …
- Question 20
The diagram shows some reactions of copper compounds. Which change is made by adding an acid? copper(II) sulfate CuSO4 copper(II) oxide CuO malachite CuCO3 copper Cu …
- Question 21
What is the effect of a catalyst on the activation energy and on the enthalpy change, ∆H, of a reaction? activation energy ∆H A decreases decreases B decreases unchanged C increases decreases D increases unchanged
- Question 22
Which substance in the table could be an amphoteric oxide? reaction with dilute hydrochloric acid reaction with water reaction with sodium hydroxide A dissolves insoluble dissolves B dissolves insoluble insoluble C insoluble dissolves insoluble D insoluble insoluble dissolves
- Question 23
Which element in the table is an alkali metal? melting point °C density g / cm3 …
- Question 24
Which compound is present in sand in the largest proportion? A Al 2O3 B CaSO4 C NaCl D SiO2
- Question 25
Atoms of elements X and Y have the electron configurations 2,5 and 2,8,5 respectively. Which deduction about these elements can be made from this information? A The atoms are isomers. B The atoms are isotopes. C The elements are in …
- Question 26
What is the function of silica, SiO2, in the equation shown below? CaO + SiO2 → CaSiO3 A a basic oxide B a reducing agent C an acidic oxide D an oxidising agent
- Question 27
Which gas can be removed from the exhaust gases of a petrol-powered car by its catalytic converter? A carbon monoxide B carbon dioxide C nitrogen D steam
- Question 28
Metal M will displace copper from aqueous copper(II) sulfate solution, but will not displace iron from aqueous iron(II) sulfate solution. M is extracted from its oxide by heating the oxide with carbon. What is the order of reactivity of these …
- Question 29
Which substance in the table is the element iodine? state at room temperature electrical conductivity when molten A liquid good B liquid none C solid good D solid none
- Question 30
Iron pipes corrode rapidly when exposed to sea water. Which metal, when attached to the iron, would not offer protection against corrosion? A aluminium B copper C magnesium D zinc
- Question 31
Which method is used in industry to extract aluminium from bauxite? A electrolysis B heating alone C heating with carbon D heating with magnesium
- Question 32
Which row shows both the correct source and the correct effect of the named pollutant? pollutant source effect A carbon monoxide incomplete combustion of carbon-containing materials global warming B oxides of nitrogen decaying vegetable matter global warming C ozone photochemical …
- Question 33
A sample of soil has a nitrogenous fertiliser in the form of an ammonium salt added to it. The ammonium salt dissolves in the water in the soil. When tested a week later, the water in the soil contained 15.3 …
- Question 34
The diagram shows a flow chart for the manufacture of fertiliser. cracking of oil air gas X gas W pressure Y and 500 °C product Z fertiliser In the flow chart, what are …
- Question 35
A factory manufactures poly(ethene). Which raw material will the factory need? A bitumen B methane C methanol D naphtha
- Question 36
Starch is a carbohydrate and is broken down to simple sugars by saliva in the mouth. What is the name for this reaction? A condensation B fermentation C hydrolysis D polymerisation
- Question 37
If 1 mole of each alkane is completely burned in oxygen, which will provide 7 moles of products? A CH4 …
- Question 38
An alcohol contains 60 % carbon by mass. What is its formula? A CH3OH B C2H5OH C C3H7OH D C4H9OH
- Question 39
The alcohol C4H9OH on oxidation with acidified potassium dichromate(VI) will give a carboxylic acid X. Which acid is X? A C4H9COOH B C3H7COOH C C2H5COOH D CH3COOH
- Question 40
Which compound has a pH of less than …
Other Chemistry papers from Oct/Nov 2012
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