IGCSE Physical Science (0652) — October–November 2023, Paper 21
40 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →The relative molecular mass of carbon dioxide is 44. The relative molecular mass of oxygen is 32. Which statement about the rate of diffusion of these gases at the same…
Answer this question and get it marked →The diagram shows a piece of apparatus. [A measuring cylinder is shown.] What is measured using this apparatus? A mass B temperature C time D volume
Answer this question and get it marked →Mixture X is separated into its components W and Y by chromatography. E is the distance between the base line and Y. F is the distance between the base line and the top of the…
Answer this question and get it marked →An isotope of sodium is represented as ²³₁₁Na. Which row represents a different isotope of sodium? electrons neutrons protons A 11 13 11 B 12 12 12 C 13 12 13 D 23 12 23
Answer this question and get it marked →The numbers of protons, neutrons and electrons in particles W, X, Y and Z are shown. particle number of protons number of neutrons number of electrons W 17 18 17 X 17 20 17 Y 17…
Answer this question and get it marked →Three statements about diamond and graphite are listed. 1 They are different solid forms of the same element. 2 They each conduct electricity. 3 They have atoms that form four…
Answer this question and get it marked →Ammonia reacts with oxygen to produce substance X and water. An incomplete equation is shown. 4NH₃ + 5O₂ → X + 6H₂O What is the formula of X? A N₂ B NO C NO₂ D N₂O
Answer this question and get it marked →The formulae of three substances are shown. 1 NO₂ 2 C₂H₅OH 3 C₃H₈ Which substances have a relative molecular mass of 46? A 1, 2 and 3 B 1 and 2 only C 1 only D 2 only
Answer this question and get it marked →Which row describes what happens to the ions at each electrode during electrolysis? anode cathode A gain of electrons loss of electrons B gain of electrons gain of electrons C…
Answer this question and get it marked →The energy level diagram for a reaction is shown. [An energy level diagram with reactants at a higher energy than products. The curve rises to a peak (activation energy) before…
Answer this question and get it marked →The rate of reaction between marble chips and hydrochloric acid is investigated. The equation is shown. CaCO₃(s) + 2HCl(aq) → CaCl₂(aq) + H₂O(l) + CO₂(g) Which conditions give the…
Answer this question and get it marked →Lead is extracted from its ore using carbon monoxide. The equation is shown. PbO + CO → Pb + CO₂ Which statement explains what happens to the lead atoms and carbon atoms in the…
Answer this question and get it marked →Hydrogen chloride reacts with water as shown. HCl + H₂O → Cl⁻ + H₃O⁺ Which statement about this reaction is correct? A Hydrogen chloride is acting as an acid because it accepts a…
Answer this question and get it marked →Zinc oxide reacts with both dilute nitric acid and aqueous sodium hydroxide. Which type of oxide is zinc oxide? A acidic B amphoteric C basic D neutral
Answer this question and get it marked →Elements in the Periodic Table are arranged in groups. Which statements about the groups are correct? 1 The group number of an element is equal to the number of occupied electron…
Answer this question and get it marked →Chloride ions are identified using aqueous silver nitrate. Before aqueous silver nitrate is added, the pH of the mixture must be below 7. Which substance is added to aqueous…
Answer this question and get it marked →Gas X is a carbon-containing greenhouse gas which has no effect on limewater. Which statement about gas X is correct? A It is a gas formed during respiration. B It is the main…
Answer this question and get it marked →What are the products of the complete combustion of methane? A carbon monoxide and hydrogen B carbon dioxide, carbon monoxide and water C carbon dioxide and water only D carbon…
Answer this question and get it marked →The formula of but-2-ene is CH₃CH=CHCH₃. But-2-ene is reacted separately with steam and with bromine. Which row identifies the structures of the products of these reactions? [A…
Answer this question and get it marked →Liquid X has the properties shown. • It is colourless. • It is flammable. • It can be made by the reaction of ethene with steam. • The complete combustion of X produces carbon…
Answer this question and get it marked →Which quantity is measured using a micrometer screw gauge? A the diameter of a thin wire B the mass of an atom C the small current in a circuit D the wavelength of a light wave
Answer this question and get it marked →The diagram shows a speed–time graph for a bus. At which labelled point is the bus moving with constant speed? [A speed–time graph. The curve rises with increasing speed (points A…
Answer this question and get it marked →A pivot is placed under the 50 cm mark of a uniform metre rule. A 40 g mass is placed at the 20 cm mark. [A uniform metre rule balanced on a pivot at the 50 cm mark. A 40 g mass…
Answer this question and get it marked →A solid cube of mass 50 kg rests on a horizontal surface. The length of each side of the cube is 50 cm. The gravitational field strength is 10 N / kg. What is the pressure on the…
Answer this question and get it marked →A student wishes to calculate his useful power output as he runs up some stairs. He measures the time he takes to run up the stairs. He can determine his power output if he knows…
Answer this question and get it marked →Which energy source is a store of gravitational potential energy? A coal B geothermal C hydroelectric D nuclear
Answer this question and get it marked →A solid, a liquid and a gas all have the same volume. They are all heated through the same temperature increase and they all expand. Which state of matter expands the least and…
Answer this question and get it marked →The diagram shows a liquid-in-glass thermometer. [A liquid-in-glass thermometer is shown, labelled with the capillary, the liquid, the glass tube, the bulb and the scale.] Which…
Answer this question and get it marked →How is heat transferred through a vacuum? A by conduction only B by convection only C by radiation only D by conduction and radiation
Answer this question and get it marked →The diagram shows an object in front of a converging lens. Each of the two points marked F is a principal focus (focal point) of the lens. The lens forms an image of the object.…
Answer this question and get it marked →Light from the Sun takes 8.3 minutes to reach the Earth through the vacuum of space. What is the distance between the Sun and the Earth? A 6.0 × 10⁵ m B 3.6 × 10⁷ m C 2.5 × 10⁹ m…
Answer this question and get it marked →What is the nature of a sound wave and in which direction do the particles vibrate in this type of wave? nature of sound wave direction of vibration of particles A longitudinal…
Answer this question and get it marked →A vibrating object produces waves of different frequencies in air. Which frequency is that of a sound wave that a human with normal hearing can hear? A 2.5 Hz B 1000 Hz C 25 000…
Answer this question and get it marked →Which metal is used to make the core of an electromagnet and what is a property of an electromagnet? metal used for core property of electromagnet A soft iron it can be switched…
Answer this question and get it marked →In 2.0 hours, a charge of 5000 C flows at a constant rate past a point in a circuit. What is the current in the circuit? A 0.69 A B 42 A C 2500 A D 10 000 A
Answer this question and get it marked →A lamp is in a circuit that is protected by a 1 A fuse. The lamp is switched on and it lights normally. The 1 A fuse is now replaced with a 5 A fuse. What happens when the lamp is…
Answer this question and get it marked →What is the purpose of the split-ring commutator in a d.c. motor? A to prevent the current in the coil from becoming too large B to reverse the current in the coil every half-turn…
Answer this question and get it marked →One isotope of iodine can be written as ¹³¹₅₃I. Which row describes a different isotope of iodine? atomic number mass number A 52 131 B 52 132 C 53 131 D 53 132
Answer this question and get it marked →The first diagram shows a beam of alpha-particles entering an electric field. The second diagram shows a beam of alpha-particles entering a magnetic field. [First diagram: a…
Answer this question and get it marked →The background count recorded by a detector in a laboratory is 40 counts per minute. When a radioactive source is brought close to the detector, the count rate becomes 840 counts…
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