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Earned Point(s): 0 of 0, (0) Q1: The diagram shows a simple laboratory apparatus for the preparation and collection of dry gas. What is the gas? Q2: What correctly describes the molecules in a very dilute sugar solution at room temperature? Q3: A mixture containing equal volumes of two liquids that mix completely but do not react together is placed in the apparatus shown and heated until the thermometer first shows a steady reading. At which position will there be the highest proportion of the liquid with the higher boiling point? Q4: Which is an anion that is present in the solution formed when an excess of dilute hydrochloric acid is added to calcium carbonate? Q5: Anion is an ion with negative charge which eliminates A and D. As dilute HCl is in excess compared to calcium carbonate, chloride ions will be present after the reaction has occurred. Q6: A metal consists of a lattice of positive ions in a ‘sea of electrons’. Q7: Which pair of elements, when combined together, do not form a covalent compound? Q8. The diagram shows the structure of a covalent compound containing the element hydrogen, H, and the unknown elements X, Y and Z. To which groups of the Periodic Table do these three elements, X, Y and Z, belong? Q9. Two different hydrocarbons each contain the same percentage by mass of hydrogen. It follows that they have the same Q10: What is the mass of one mole of carbon-12? Q11. The diagram shows the electrolysis of a concentrated aqueous solution containing both copper(II) ions and sodium ions. Which metal is deposited at the negative electrode and why? Q12. The diagram shows the apparatus used to electrolyze lead(II) bromide using inert electrodes. Why does the lamp light up only when the lead(II) bromide is melted? Q13. When a solution containing silver ions is added to a solution containing iron(II) ions, an equilibrium is set up. Ag+(aq) + Fe2+(aq) ⇌ Ag(s) + Fe3+(aq) The addition of which substance would not affect the amount of silver precipitated? Q14. Which reaction does not involve either oxidation or reduction? Q15. A student performs two reactions. reaction 1: 10g of magnesium ribbon with excess 2.0mol / dm3 dilute hydrochloric acid In both experiments, the volume of hydrogen produced, V, is measured against time, t, and the results are plotted graphically. Q16. Which statement about catalysts is correct for a typical equilibrium reaction? Q17. Which pair of compounds could be used in the preparation of calcium sulfate? Q18. Titration of an acid against a base is a method often used in the preparation of salts. Which properties of the acid, the base and the salt are required if this method is to be used? Q19. A metal reacts with dilute hydrochloric acid to produce a gas. What is used to identify this gas? Q20. The oxide of an element X increases the rate of decomposition of hydrogen peroxide. At the end of the reaction the oxide of X is unchanged. Q21. Which element is sodium? Q22. Which row shows the correct number of protons and electrons in the ion of an element in Group II of the Periodic Table? Q23. The diagram shows part of the Periodic Table. Which pair of letters represent elements that are in the same period? Q24. From your knowledge of the manufacture of both aluminium and iron, what is the order of chemical reactivity of aluminium, carbon and iron towards oxygen? Q25. An alloy of copper and zinc is added to an excess of dilute hydrochloric acid. Which observations are correct? Q26. In the extraction of iron, carbon monoxide acts as Q27. Which substances react together to give hydrogen? Q28. The diagram shows apparatus for measuring the volume of hydrogen given off when an excess of dilute hydrochloric acid is added to the powdered metal. The volume of gas is measured at room temperature and pressure. The experiment is carried out three times, using the same mass of powder each time but with Q29. Which gas burns in air to form only one product? Q30. Why is carbon used in the purification of drinking water? Q31. Which compound will not produce ammonia when heated with ammonium sulfate? Q32. These reactions are used in the manufacture of sulfuric acid. P S + O2 → SO2 Q33. Which substances will burn in air and give carbon dioxide amongst the combustion products? 1 calcium carbonate Q34. The two statements are about the fractional distillation of crude oil. The statements may or may not be correct. They may or may not be linked. Statement 2: The fractions with lower boiling points are found at the top of the fractionating column. What is correct about these two statements? Q35. When butanol, represented by C4HwOH, burns in air, carbon dioxide and water are formed. C4HwOH + xO2 → 4CO4 + yH4O Which values of w, x and y balance the equation? Q36. An aqueous solution of a compound of formula C2H4O2 reacts with sodium carbonate, liberating carbon dioxide. Q37. How does the number of carbon, hydrogen and oxygen atoms in an ester differ from the total number of carbon, hydrogen and oxygen atoms in the alcohol and carboxylic acid from which the compound was derived? Q38. The list shows three chemical reactions. 1 combustion of ethanol In which reactions is water a product? Q39. The diagram shows a reaction scheme. What is the final compound, Z? Q40. The macromolecules of proteins, fats and carbohydrates can all be broken down into their simple units by a similar process. What is the process called?READ THESE INSTRUCTIONS FIRST
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What changes, if any, take place to the electrons and positive ions in a metal wire when an electric current is passed through it?
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reaction 2: 5g of magnesium powder with excess 2.0mol / dm3 dilute hydrochloric acid
Which set of graphs is correct?
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Which details are those of X?
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different powders:
• pure magnesium
• pure zinc
• a mixture of magnesium and zinc
Which powder gives the greatest volume of hydrogen and which the least volume?
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32. Question
Q 2SO2 + O2 2SO3
R SO3 + H2O → H2SO4
Which reactions are speeded up by using a catalyst?
33. Question
2 ethane
3 ethanol
4 methanol
34. Question
Statement 1: Fractional distillation is used to separate crude oil into useful fractions.
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36. Question
What is the structural formula of the compound?
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2 fermentation of glucose
3 reaction of ethanol with ethanoic acid to give an ester
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2010 May-June Paper
Congratulations on completing your preparation and beginning your practice! You’re almost near the finish line and you should be really proud of yourself! 🤩🥳 Now all you have to do is get a rough notebook where you can note down your workings or solutions, and if need be, corrections as well. 📝 When you “Start” the paper, you will have 1 hour to complete the P1 which comprises 40 MCQs. Once you start the paper, remember to believe in your prep and solve each question smartly! Once you have completed the paper, you will have the option to submit your score to the leaderboard. You can then view the detailed solutions, and even restart the paper to give yourself another try! Good Luck and happy practising, you got this! 👍🏼READ THESE INSTRUCTIONS FIRST
