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2017 O Level Pure Chemistry Paper 1 — All Solutions

40 multiple-choice questions · Free video solutions
P1 Q1
Experimental Techniques / Drying and Collecting Gases
A student is provided with two drying agents: concentrated sulfuric acid and calcium oxide. Which method should he use t…
P1 Q2
Salts / Precipitation Reactions
In which reaction is a white precipitate formed?…
P1 Q3
Kinetic Particle Theory / Diffusion
The stopper was removed from a bottle containing perfume X and the time taken for the smell to reach the opposite side o…
P1 Q4
Atomic Structure / Isotopes
Four atoms are shown. ¹⁴₆C ¹⁵₇N ¹⁶₈O ¹⁷₉F Which statement about all four atoms is correct?…
P1 Q5
Atomic Structure / Ions and Periodic Position
The diagram shows the structure of an ion. What is the correct position in the Periodic Table of the element from which …
P1 Q6
Chemical Bonding / Ionic Bonding
A metal X and a non-metal Y react together to form an ionic compound X₂Y. Which statement is correct when this compound …
P1 Q7
Chemical Bonding / Covalent Bonding
Which pair of elements combine together to form a covalent molecule?…
P1 Q8
Structure and Properties / Metals and Ionic Compounds
Which statements are correct for both metals and ionic compounds? 1 They conduct electricity because electrons flow thro…
P1 Q9
Mole Concept / Gas Volumes
28 g of gaseous hydrocarbon X has a volume of 12 dm³ at room temperature and pressure. What is the molecular formula of …
P1 Q10
Stoichiometry / Mole Calculations
The equations show the reactions involved in the formation of nitric acid, HNO₃, from nitrogen. N₂ + O₂ → 2NO 2NO + O₂ …
P1 Q11
Electrolysis / Quantitative Electrolysis
In an electrolysis experiment, the same amount of charge deposited 6 g of titanium and 16 g of copper. The charge on the…
P1 Q12
Electrolysis / Electrode Reactions
What happens when molten lead(II) chloride is electrolysed?…
P1 Q13
Electrolysis / Products of Electrolysis
Dilute aqueous sodium chloride and concentrated aqueous sodium chloride are electrolysed using inert electrodes in separ…
P1 Q14
Energy Changes / Bond Energy
The equation for the combustion of hydrogen is shown. 2H₂(g) + O₂(g) → 2H₂O(g) What is the enthalpy change of this react…
P1 Q15
Energy Changes / Enthalpy of Combustion
The enthalpy change of combustion, ΔH, of an alcohol is the heat given out when one mole of the alcohol is completely bu…
P1 Q16
Speed of Reaction / Rate Graphs
A student added excess hydrochloric acid to calcium carbonate. As the reaction proceeded he measured the volume of carbo…
P1 Q17
Redox / Oxidation State Changes
In which equations is manganese being reduced? 1 2Mn(OH)₂ + H₂O₂ → Mn₂O₃ + 3H₂O 2 MnO₂ + 4HCl → MnCl₂ + Cl₂ + 2H₂O 3 M…
P1 Q18
Redox / Oxidation State
Ethanol is oxidised to ethanoic acid by acidified potassium dichromate(VI). 3C₂H₅OH + 2K₂Cr₂O₇ + 8H₂SO₄ → 3CH₃CO₂H + 11H…
P1 Q19
Acids and Bases / pH and Strength
Some statements about acids are given. 1 A 1 mol/dm³ solution of a strong acid will have a higher pH than a 1 mol/dm³ so…
P1 Q20
Ammonia / Properties of Ammonia
Which statement about ammonia is correct?…
P1 Q21
Salts / Solubility Rules
Which solutions, when mixed together, form an insoluble salt?…
P1 Q22
Acids Bases and Salts / Oxides
Which statement about oxides is correct?…
P1 Q23
Periodic Table / Reactivity Trends
Which pair of elements, when reacted together, would give the most violent reaction?…
P1 Q24
Periodic Table / Transition Elements
Element Q has the following properties. • forms QCl₃ when heated with chlorine • forms QSO₄ when reacted with dilute sul…
P1 Q25
Periodic Table / Structure and Bonding
The diagram shows part of the Periodic Table. Which row is correct?…
P1 Q26
Qualitative Analysis / Identifying Ions
A salt, G, dissolved in water to give a green solution. On adding chlorine, the green solution turned yellow. On additio…
P1 Q27
Periodic Table / Elements and Properties
P, Q, R and S are elements in the Periodic Table. • Q and R are formed as elements at the positive electrode during elec…
P1 Q28
Metals / Alloys
Duralumin is an aluminium alloy that contains copper. Which statement about duralumin is correct?…
P1 Q29
Stoichiometry / Reactions Forming CO2 and Water
Which process does not result in the formation of both carbon dioxide and water?…
P1 Q30
Metals / Extraction and Reactivity
Which statement about metals and their compounds is not correct?…
P1 Q31
Metals / Extraction of Iron
Which statement about the extraction of iron in a blast furnace is correct?…
P1 Q32
Metals / Reactivity with Acids
1.0 g of each of the metals calcium, iron, magnesium and zinc was placed in separate test-tubes, each containing excess …
P1 Q33
Air / Catalytic Converters
Catalytic converters are used in the removal of harmful pollutants from exhaust gases. Which equations show reactions th…
P1 Q34
Acids and Bases / Neutralisation
Acid rain contains sulfuric acid and can cause lakes to become acidic. Acidic lakes may be treated with powdered limesto…
P1 Q35
Organic Chemistry / Alkenes and Addition
One mole of hydrocarbon X reacted completely with one mole of hydrogen gas in the presence of a heated catalyst. What co…
P1 Q36
Organic Chemistry / Polymerisation
Hydrocarbon Q, on heating with a catalyst, forms a solid compound, R. Both Q and R have the same empirical formula. What…
P1 Q37
Organic Chemistry / Cracking
When decane, C₁₀H₂₂, is cracked, only three compounds are formed. The compounds are ethane, ethene and propene. What is …
P1 Q38
Organic Chemistry / Reactions of Alkenes
Which row shows the products of the complete combustion of ethene and the products of the reaction of ethene with chlori…
P1 Q39
Organic Chemistry / Alcohols and Oxidation
Which alcohol cannot be oxidised to produce a carboxylic acid containing a CH₃ group?…
P1 Q40
Organic Chemistry / Esters
The reaction between a carboxylic acid, CₓHᵧCO₂H, and an alcohol, CₙH₂ₙ₊₁OH, produces an ester. How many hydrogen atoms …