IGCSE Science - Combined (0653) — May–June 2024, Paper 22
40 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →The diagram shows a typical plant cell. Which part of the cell controls the movement of materials into and out of the cell? A D B C
Answer this question and get it marked →Molecules can move from one area to another by diffusion. Which statement applies to diffusion? A A partially permeable membrane is needed for diffusion to happen. B Diffusion can…
Answer this question and get it marked →Biological catalysts speed up reactions. What is another name for biological catalysts? A antibodies B enzymes C fatty acids D hormones
Answer this question and get it marked →Which row is correct for photosynthesis in a leaf? cells where substrates products photosynthesis occurs A C6H12O6 + 6O2 6H2O + 6CO2 palisade mesophyll B C6H12O6 + 6O2 6H2O + 6CO2…
Answer this question and get it marked →Which type of molecule is starch? A carbohydrate B fat C protein D vitamin
Answer this question and get it marked →Chemical digestion starts in the mouth and continues throughout the length of the alimentary canal. What is a sequence of three organs in the alimentary canal where chemical…
Answer this question and get it marked →How are mineral ions transported around the human body? A attached to antibodies B attached to haemoglobin C dissolved in blood plasma D inside blood platelets
Answer this question and get it marked →Which row correctly lists the features of a gas exchange surface in animals? large good good thin surface blood ventilation surface area supply with air A key B …
Answer this question and get it marked →When the hormone adrenaline is released in humans it causes changes in breathing rate and pupil size. What are the correct changes? breathing rate pupil size A decreases decreases…
Answer this question and get it marked →The table shows some possible tropic responses in a plant. direction of growth response to part of plant light (from gravity one direction) 1 root away towards 2 root towards away…
Answer this question and get it marked →Which row shows the anther and stigma of an insect-pollinated flower? 1 2 3 4 insect-pollinated insect-pollinated anther stigma A 1 2 B 1 4 C 4 1 D 4 3
Answer this question and get it marked →What gives the human embryo protection from mechanical shock? A amniotic fluid B cervix C placenta D umbilical cord
Answer this question and get it marked →The diagram shows part of the carbon cycle. carbon dioxide in the atmosphere 3 1 4 2 plants animals and trees fossil fuels dead organisms Which arrows represent decomposition and…
Answer this question and get it marked →The diagram shows a chromatogram of an ink sample after separation by paper chromatography. solvent front coloured spots start line Which calculation is used to determine the Rf…
Answer this question and get it marked →White solid X is formed when magnesium reacts with oxygen. What is X? A a compound B a mixture C an alloy D an element
Answer this question and get it marked →Which statement describes the formation of ions when two different atoms combine? A The two atoms share a pair of electrons. B Both atoms lose electrons. C Both atoms gain…
Answer this question and get it marked →A solution of barium chloride reacts with dilute sulfuric acid to form a precipitate. What is the ionic equation for this reaction? A Ba2+(aq) + SO42–(aq) BaSO4(aq) B Ba2+(aq) +…
Answer this question and get it marked →Dilute sulfuric acid is electrolysed using platinum electrodes. Which statements about this electrolysis are correct? 1 Water is broken down to give hydrogen and oxygen. 2 Water…
Answer this question and get it marked →Which row about an endothermic reaction is correct? temperature change energy in the reaction mixture A given out decreases B taken in increases C given out increases D taken in…
Answer this question and get it marked →Hydrogen peroxide decomposes to form water and oxygen. Which changes in temperature and in concentration both reduce the rate of this reaction? temperature of concentration of…
Answer this question and get it marked →Which equation represents a redox reaction? A AgNO3 + NaCl NaNO3 + AgCl B CaCO3 CaO + CO2 C CH4 + 2O2 CO2 + 2H2O D HCl + NaOH NaCl + H2O
Answer this question and get it marked →Copper sulfate is a soluble salt which is prepared by reacting insoluble copper oxide with dilute sulfuric acid. Which statement about the preparation of copper sulfate crystals…
Answer this question and get it marked →Magnesium carbonate reacts with dilute sulfuric acid. A gas is produced. What is the test for this gas? A It bleaches damp litmus paper. B It ‘pops’ with a lighted splint. C It…
Answer this question and get it marked →Which diagram represents the particles in an alloy? A B C D
Answer this question and get it marked →What causes an enhanced greenhouse effect? A decreased concentration of methane in the atmosphere B decreased concentration of nitrogen in the atmosphere C increased concentration…
Answer this question and get it marked →Which statement about alkenes is correct? A They are saturated hydrocarbons. B They have the general formula CnH2n+2. C They have similar chemical properties. D They are all gases…
Answer this question and get it marked →A hydrocarbon with the formula C9H20 is cracked to form one molecule of ethene and two other hydrocarbon molecules. What are the two other molecules? A C4H10 and C3H8 B C4H8 and…
Answer this question and get it marked →Two identical solid objects X and Y are placed on a bench. X Y How do the forces and the pressures on the bench due to X and Y compare? forces pressures A different different B…
Answer this question and get it marked →An object has mass and is in a gravitational field. Which property does the object possess because it is in a gravitational field? A density B resistance C volume D weight
Answer this question and get it marked →A spring obeys Hooke’s law. In which unit is its spring constant measured? A m/N B N C N/m D Nm
Answer this question and get it marked →A block has a mass of 5.0 kg. A student pushes the block 5.0 m up a slope. The gravitational field strength is 10 N / kg. 5.0 m block 3.0 m push 4.0 m How much gravitational…
Answer this question and get it marked →An automatic coffee maker has a power rating of 900 W and takes 3.0 minutes to make a cup of coffee. How much energy is transferred by the coffee maker when it makes a cup of…
Answer this question and get it marked →In which list are all the energy resources renewable? A geothermal, hydroelectric, nuclear B geothermal, tides, hydroelectric C tides, nuclear, coal D solar, wind, coal
Answer this question and get it marked →A student cooks a potato over a fire. The student holds the potato using a metal rod. potato metal rod Which transfer of thermal energy is caused mainly by radiation? A from the…
Answer this question and get it marked →A student uses a thin converging lens of focal length 5.0 cm as a magnifying glass. What is a possible position of the object? A 4.0 cm from the lens, on the same side of the lens…
Answer this question and get it marked →What is not able to transmit sound waves? A a gas B a liquid C a solid D a vacuum
Answer this question and get it marked →There is a potential difference (p.d.) of 6.0 V across a resistor of resistance 1.5 k. How much charge passes through the resistor in 5.0 minutes? A 1.2 C B 20 C C 30 C D 1200 C
Answer this question and get it marked →Wire X and wire Y are made from the same material. Each wire has a circular cross-section. The resistance of wire X is R, its length is l and its diameter is d. The length of wire…
Answer this question and get it marked →The diagram shows three resistors connected to a 12 V battery. The current at two points in the circuit and the potential difference (p.d.) across one resistor are shown. Another…
Answer this question and get it marked →A fault develops in an electric circuit and the current in the circuit becomes too large. A component in the circuit protects the wires from overheating. Which component protects…
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