CAPE Chemistry Unit 2 · 2015 · Paper 1
40 multiple-choice items from this paper. Open one to see it in full, then practise it on Quelpr and get it marked against the mark scheme.
- Q11 mark · multiple choiceItem 1 refers to the following structure. Based on the IUPAC rules, the name of the compound above is
- Q21 mark · multiple choiceA hydrocarbon contains
87.8\%carbon and12.2\%hydrogen by mass. Its empirical formula is - Q31 mark · multiple choiceThe equation for the formation of the anaesthetic,
\text{CF}_3\text{CHBrCl}, is\text{CF}_3\text{CH}_2\text{Cl} \xrightarrow{\text{Br}_2} \text{CF}_3\text{CHBrCl}.The type of reaction occurring is - Q41 mark · multiple choiceIn the reaction between ethene and bromine, which of the following statements about the reaction mechanism may be true? I. A carbocation forms in the rate determining step. II. A dative covalent bond forms between the…
- Q51 mark · multiple choiceWhich of the following compounds will NOT decolourize bromine water but will decolourize potassium manganate(VII) on warming?
- Q61 mark · multiple choiceItem 6 refers to the following information.
A substance reacts with
I.
\text{NaOH}to form an ionic product II.\text{H}_2in the presence of a nickel catalyst III. ethanol to produce an organic compound and water.… - Q81 mark · multiple choiceDiazonium salts are useful in the synthesis of aromatic compounds. Which of the following compounds can be prepared from a diazonium salt?
- Q91 mark · multiple choiceA compound, X, reacts with I. 2, 4-dinitrophenylhydrazine (DNPH) to give an orange precipitate II. Tollen's reagent to give a silver mirror III. aqueous alkaline iodine to give yellow crystals. Compound X is MOST likely
- Q111 mark · multiple choice2-hydroxy-2-methylpropanoic acid can be formed from propanone in two steps as illustrated below.
\text{CH}_3-\text{C}(=\text{O})-\text{CH}_3 \xrightarrow{\text{Step X}}… - Q121 mark · multiple choiceItem 12 refers to the following conversion.
\text{C}_6\text{H}_5\text{CH}_2\text{CH}_3 + \text{Cl}_2 \longrightarrow \text{C}_6\text{H}_5\text{CH}_2\text{CH}_2\text{Cl} + \text{HCl}Which reaction mechanism occurs… - Q131 mark · multiple choiceWhich of the following statements is NOT true of addition polymerization?
- Q151 mark · multiple choiceWhat would be OBSERVED when aqueous bromine is added to the following compound (phenol)?
- Q161 mark · multiple choiceWhich of the following factors will NOT affect the accuracy of the results in a titrimetric analysis?
- Q171 mark · multiple choiceSpecies which absorb light in the UV-Vis region have I. saturated bonds II. unsaturated bonds III. non-bonded electron pairs.
- Q181 mark · multiple choiceUV-Vis molecular absorption arises from vibrational and rotational transitions from I. within the ground state II. the ground state to the excited state III. the excited state to the ground state.
- Q191 mark · multiple choiceItems 19-20 refer to the following information.
A student carries out the gravimetric analysis of a soil sample taken from an area surrounding a garage. The soil sample is found to be contaminated with
\text{Pb}^{2+}… - Q201 mark · multiple choiceWhat is the concentration of
\text{Pb}^{2+}in the original solution? - Q211 mark · multiple choiceWhich of the following materials are commonly used stationary phases in chromatography?
- Q221 mark · multiple choiceA compound absorbs light of frequency
940\text{ MHz}. The wavelength, in\text{cm}, of the light absorbed is (c = 3.0 \times 10^8\text{ m s}^{-1}) - Q231 mark · multiple choiceWhich of the following relationships is TRUE for the absorbance,
A, of UV-Vis light by a solution of concentrationc? - Q241 mark · multiple choiceWhich of the following regions of the electromagnetic spectrum BEST matches the wavelength ranges of P, Q and R?
- Q251 mark · multiple choiceWhich of the following processes occur in a mass spectrometer before isotopes can be detected? I. Acceleration II. Amplification III. Deflection
- Q261 mark · multiple choiceA mixture of gases containing methanol, ethanol, propan-1-ol and propan-2-ol, was obtained from a refinery. What method can be used to separate these gases for analysis?
- Q271 mark · multiple choiceWhat transitions are expected from
\text{C}_4\text{H}_9\text{NO}_2in a UV-Vis spectrum? - Q291 mark · multiple choiceWhich of the following compounds are the MAIN impurities in bauxite? I. Iron(III) oxide II. Lead oxide III. Silicon(IV) oxide IV. Calcium carbonate
- Q301 mark · multiple choiceCompound X contains three components P, Q and R. Component P is needed as the starting material for the synthesis of a new drug. Which of the following methods of chromatography is MOST suitable for obtaining a pure…
- Q311 mark · multiple choiceWhich of the following processes is NOT involved in the manufacture of ethanol?
- Q321 mark · multiple choiceThe chlor-alkali industry is I. a redox process II. an electrolytic process III. necessary in making bleach.
- Q331 mark · multiple choiceWhich of the following occurrences may be a result of a light-induced reaction of pollutants in the air? I. Global warming II. Photochemical smog III. Greenhouse effect
- Q341 mark · multiple choiceFermentation of sugars to alcohol is controlled by an enzyme complex (mixture) known as
- Q351 mark · multiple choiceDuring an earthquake, household water supply is MOST likely to become polluted by
- Q361 mark · multiple choiceThe FDA regulates the use of food additives and requires that additives NOT be used I. to disguise faulty or inferior products II. to enhance the colour and flavour of food products III. when they significantly destroy…
- Q371 mark · multiple choiceFlocculation is a process involved in the
- Q381 mark · multiple choiceChlorine is the active component for swimming pool disinfectants, although it is a poisonous gas. Which of the following salts is used as a safe chlorine source?
- Q391 mark · multiple choiceIn which layer of the atmosphere is ozone detrimental to human health and vegetation?
- Q401 mark · multiple choiceWhich of the following outcomes are advantages of using incineration as a form of solid waste disposal? I. Pathogens are destroyed in the process. II. Incineration reduces the volume of solid waste. III. Heat produced…
- Q421 mark · multiple choiceThe appearance of a bright red precipitate on the addition of
\text{Fe}(\text{NO}_3)_3to a sample of water indicates the presence of - Q431 mark · multiple choiceChlorofluorocarbons undergo homolytic fission by being exposed to ultraviolet light in the stratosphere.
Which radical could result from
\text{CH}_2\text{FCF}_2\text{Cl}? - Q441 mark · multiple choiceA sample of crude oil contains mainly
\text{C}_8\text{H}_{18}. In which crude oil fraction would you expect to find this sample? - Q451 mark · multiple choiceThermal pollution results in