MOCK PAPER 1

This document consists of 10 printed pages and 2 blank pages. CANDIDATE NAME CENTRE NUMBER S INDEX NUMBER SECONDARY FOUR EXPRESS / FIVE NORMAL (ACADEMIC) GENERAL CERTIFICATE OF EDUCATION (ORDINARY LEVEL) MOCK PAPER SCIENCE (PHYSICS/CHEMISTRY) 5086/01 SCIENCE (CHEMISTRY/BIOLOGY) 5088/01 Paper 1 Multiple Choice 1 hour ADDITIONAL MATERIALS: Optical Answer Sheet (x1) INSTRUCTIONS TO CANDIDATES Write your NAME, CENTRE NUMBER and INDEX NUMBER at the top of this page and on the OAS paper. Shade your index number on the OAS paper. There are 20 questions on this paper. Answer all questions. For each question, there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate OAS paper. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. A copy of the Data Sheet is printed on page 9. A copy of the Periodic Table is printed on page 10. The use of an approved scientific calculator is expected, where appropriate.

2 © chiasamuel 2025 1 An atom of chlorine is represented by C𝑙17 37 . Which option shows the structure of this atom? A B C D 2 The electronic structures of two atoms Y and Z are shown. Y and Z can combine together to form a bond. Which row describes the bonding and formula of the compound? type of bonding formula A covalent YZ B ionic ZY C covalent Y2Z7 D ionic ZY2 3 Which ions are present in solid calcium phosphate, Ca3(PO4)2 ? A Ca3+ and PO42- B Ca2+ and PO43- C Ca3- and PO42+ D Ca2- and PO43+

3 © chiasamuel 2025 4 The diagram below shows an organic molecule, propyl ethanoate. How many pairs of electrons are used in bonding in the molecule? A 1 B 2 C 14 D 17 5 Two statements about the structure and properties of metals are given. Statement 1: Metals are malleable and most have high melting points. Statement 2: Metals are good conductors of electricity. Which of the following correctly describes statements 1 and 2? A Both statements are correct, and Statement 2 explains Statement 1. B Both statements are correct, but Statement 2 does not explain Statement 1. C Statement 2 is correct but statement 1 is incorrect. D Statement 1 is correct but statement 2 is incorrect. 6 Hydrochloric acid reacts with lithium hydroxide as shown below. HC𝑙 + LiOH → LiC𝑙 + H2O What is the volume of hydrochloric acid of concentration 2.0 mol/dm3 needed to fully react with 25.0 cm3 of lithium hydroxide of concentration 1.0 mol/dm3? A 12.5 cm3 B 25.0 cm3 C 50.0 cm3 D 100.0 cm3

4 © chiasamuel 2025 7 The average mass of an atom of X is 24 times greater than 1 12 of the mass of a carbon-12 atom. What is the relative atomic mass of X? A 2 B 12 C 24 D 48 8 The colours of an indicator, Congo Red, in solutions of pH are shown below. Which pair of solutions could be distinguished by this indicator? A aqueous sodium chloride, aqueous ammonia B aqueous sodium chloride, dilute hydrochloric acid C aqueous ammonia and aqueous sodium hydroxide D dilute sulfuric acid and dilute nitric acid 9 A simplified version of the Periodic Table shows four elements with the code letters, W, X, Y and Z. Which of the following statements is correct? A W is a metal while X, Y and Z are non-metals. B W and X are solid but Y and Z are gases at room temperature. C W and X are in the same group with the same number of electron shells. D W and X form an ionic compound while Y and Z form a covalent compound.

5 © chiasamuel 2025 10 Which element in the table is an alkali metal? Melting point / °C density / g/cm3 A -39 13.60 B -7 3.10 C 98 0.97 D 1093 8.92 11 Carbon dioxide reacts with carbon to form carbon monoxide. CO2 + C → 2 CO Which row describes what happens to the carbon dioxide and to the carbon during the reaction? CO2 C A oxidised oxidised B oxidised reduced C reduced oxidised D reduced reduced 12 Excess magnesium ribbon is reacted with 10 cm3 of dilute hydrochloric acid. The hydrogen gas produced is collected and measured. Which change to the reaction conditions would increase the rate of reaction and the volume of the hydrogen produced? A Use a lower temperature. B Use a transition metal catalyst. C Use concentrated hydrochloric acid. D Use powdered magnesium.

6 © chiasamuel 2025 13 Curve I is obtained by observing the decomposition of 100 cm3 of 1 mol/dm3 aqueous hydrogen peroxide, catalysed by manganese (IV) oxide. 2H2O2 (aq) → 2H2O (𝑙) + O2 (g) Which alternation to the conditions will produce curve II? A adding some 0.1 mol/dm3 aqueous hydrogen peroxide B lowering the temperature C using a better catalyst D using less magnesium (IV) oxide 14 80.0 cm3 of a sample of air is trapped in a syringe. The air is slowly passed over heated iron in a tube until there is no further decrease in volume. When cooled to the original temperature, what volume of gas remains? A 16.8 cm3 B 40.0 cm3 C 60.0 cm3 D 63.2 cm3 15 Methane reacts with an excess of chlorine in the presence of ultraviolet light to form a mixture of products. How many of these products contain one carbon atom and one or more chlorine atoms? A 1 B 2 C 3 D 4

7 © chiasamuel 2025 16 Which statement about alkanes is incorrect? A A molecule of propane contains 2 carbon atoms. B The general formula is CnH2n+2. C They react with chlorine in a substitution reaction under ultraviolet light. D The possible products of incomplete combustion are water, soot and carbon monoxide. 17 Bitumen contains an organic compound with the molecular formula of C20H42. It undergoes a process called catalytic cracking, to form hydrocarbons with shorter carbon chains which are higher in demand. The chemical equation is given as shown: C20H42 → 2C6H12 + compound K + H2 What tis the identity of compound K? A C4H8 B C4H10 C C8H16 D C8H18 18 The fermentation of sugar from corn produces bioethanol as an alternative to fossil fuel. Burning bioethanol is considered more environmentally sustainable. Which statement explains why burning bioethanol is considered more environmentally sustainable? A Burning bioethanol releases no greenhouse gases. B Corn growth absorbs the carbon dioxide released when burning bioethanol. C Production of bioethanol uses less land and water resources. D The treatment of waste after extraction of sugar from corn is safe for the environment. 19 Which of the following shows the effect of climate change correctly? climate change phenomenon effects of climate change A ocean warming coral reefs are bleached B desertification high temperatures cause death of elderly and frail C heat waves sea levels increase D glacial retreat food production decreases

8 © chiasamuel 2025 20 Which statements about the pollutant (sulfur dioxide) are correct? 1. It is colourless and odourless. 2. It is formed during volcanic eruptions. 3. It reacts with haemoglobin in the blood. 4. It causes acid rain formation. A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4

9 © chiasamuel 2025 Colours of Some Common Metal Hydroxides aluminium hydroxide white calcium hydroxide white copper(II) hydroxide light blue iron(II) hydroxide green iron(III) hydroxide red-brown zinc hydroxide white

10 © chiasamuel 2025