IGCSE Science - Combined (0653) — October–November 2024, Paper 11
40 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Chemical reactions in a muscle cell release energy by breaking down nutrient molecules. Which characteristic of living things is this an example of? A excretion B growth C…
Answer this question and get it marked →Which row is correct? starch proteins fats --- --- --- --- A made from amino acids made from glucose made from glycerol B made from amino acids made from glucose made from fatty…
Answer this question and get it marked →Which name is given to proteins that function as biological catalysts in cells? A antibodies B enzymes C haemoglobin D hormones
Answer this question and get it marked →The list shows some chemicals that are important to a plant. 1 carbon dioxide 2 nitrates 3 oxygen 4 water Which chemicals does a plant use in photosynthesis? A 1, 2 and 4 B 1 and…
Answer this question and get it marked →What are the functions of the small intestine? A absorption and digestion B absorption and egestion C ingestion and digestion D ingestion and egestion
Answer this question and get it marked →The table shows some of the processes involved in transpiration. What happens to these processes when the temperature increases? evaporation of water from the surface of mesophyll…
Answer this question and get it marked →Which component of blood is used for clotting? A plasma B platelets C red blood cells D white blood cells
Answer this question and get it marked →What is the correct equation for aerobic respiration? A carbon dioxide + oxygen → glucose + water B carbon dioxide + water → glucose + oxygen C glucose + oxygen → carbon dioxide +…
Answer this question and get it marked →What is the effect of adrenaline on the rate of breathing and pulse rate? rate of breathing pulse rate --- --- --- A decreases decreases B decreases increases C increases…
Answer this question and get it marked →Which row is correct for sexual reproduction? The table has two columns: "a zygote is formed" and "the offspring are genetically identical to each other". Each row uses a tick (✓)…
Answer this question and get it marked →In which flask do the cress seeds germinate first? The diagram shows four conical flasks A, B, C and D, each with a stopper and a clump of cotton wool with cress seeds suspended…
Answer this question and get it marked →The diagram shows a food web. Grass is the producer at the bottom. Snail and grasshopper feed on the grass. A small bird and a lizard are at the next level. A snake feeds within…
Answer this question and get it marked →The diagram represents the carbon cycle. CO2 is shown in the atmosphere. Arrow A points upward into the atmosphere from organisms/respiration, arrow B is another flux into the…
Answer this question and get it marked →Four processes are listed. 1 melting of ice 2 electrolysis of molten lead(II) bromide 3 combustion of carbon 4 rusting of iron Which processes are chemical changes? A 1, 2 and 3 B…
Answer this question and get it marked →Aluminium sulfate contains two aluminium atoms, three sulfur atoms and twelve oxygen atoms. What is the formula of aluminium sulfate? A 2Al 3S 6O B 2Al S3O12 C Al2(SO4)3 D…
Answer this question and get it marked →In which states do ionic compounds undergo electrolysis? A aqueous and solid B aqueous and liquid C gas and solid D gas and liquid
Answer this question and get it marked →Which type of reaction always releases thermal energy into the surroundings? A endothermic B evaporation C exothermic D redox
Answer this question and get it marked →The apparatus used to measure the volume of gas produced in the reaction between magnesium and dilute hydrochloric acid is shown. The diagram shows a conical flask containing the…
Answer this question and get it marked →Copper oxide reacts with hydrogen to form copper and water. The equation for this reaction is shown. CuO + H2 → Cu + H2O Which substance is reduced in this reaction? A Cu B CuO C…
Answer this question and get it marked →Lithium is added to water containing universal indicator. A gas is given off and the indicator changes colour. Which row describes the gas produced and the final colour of the…
Answer this question and get it marked →A solution of compound X produces a green precipitate when aqueous sodium hydroxide is added. What is X? A copper(II) chloride B copper(II) sulfate C iron(II) sulfate D iron(III)…
Answer this question and get it marked →Which statement about noble gases is correct? A Atoms of noble gases form diatomic molecules. B Atoms of noble gases have full outer shells of electrons. C They form unreactive…
Answer this question and get it marked →Brass is an alloy of copper and zinc. Which diagram represents a door handle made of brass? The four options each show a representation of the material's structure: A: separate…
Answer this question and get it marked →What is a chemical test for water? A Blue cobalt(II) chloride paper turns pink. B Measure its boiling point which is 100 °C. C Measure its melting point which is 0 °C. D Pink…
Answer this question and get it marked →What is the approximate percentage of carbon dioxide in clean air? A 0.04% B 2% C 20% D 80%
Answer this question and get it marked →Petroleum is separated into fractions by fractional distillation. Which row shows the correct use for the named fraction? fraction use --- --- --- A bitumen making road surfaces B…
Answer this question and get it marked →Which statement about alkanes is correct? A They contain double bonds. B They react with acids. C They react with aqueous bromine. D They undergo complete combustion.
Answer this question and get it marked →Which quantity is measured using a measuring cylinder? A length B mass C time D volume
Answer this question and get it marked →How is the density of a sample of a liquid calculated? A by adding the mass of the sample to its volume B by dividing the mass of the sample by its volume C by multiplying the…
Answer this question and get it marked →An object is travelling in a straight line at constant speed. Which statement describes the resultant force on the object? A It acts in the opposite direction to the motion of the…
Answer this question and get it marked →How is energy transferred from the Sun to the Earth through the vacuum of space? A by electromagnetic waves B by movement of electrons C by movement of molecules D by sound waves
Answer this question and get it marked →A crane lifts a load vertically. The diagram shows a crane raising a load. Which situation requires the crane to produce a greater power? A lifting a lighter load through the same…
Answer this question and get it marked →The more-energetic molecules of a liquid escape from its surface and the temperature of the remaining liquid decreases. Which process is occurring? A boiling B condensation C…
Answer this question and get it marked →An iron rod fits tightly inside an aluminium cylinder. To remove the rod from the cylinder, hot air is blown onto the rod and cylinder. After a short time, the rod slides out of…
Answer this question and get it marked →A gas is trapped in a container. The gas is heated from below. What is the main method of thermal energy transfer in the gas? A conduction B convection C evaporation D radiation
Answer this question and get it marked →The diagram shows a thin converging lens and a small object O placed beyond the principal focus on the left. Each principal focus is marked F (one on each side of the lens). Light…
Answer this question and get it marked →Elephants can hear sounds with frequencies between 10 Hz and 12 kHz. Which frequency of sound can be heard by both elephants and humans with healthy ears? A 10 Hz B 15 Hz C 1500…
Answer this question and get it marked →A positively charged sphere is suspended from an insulating thread. A plastic rod is rubbed with a cloth and moved towards the sphere. The diagram shows the positively charged…
Answer this question and get it marked →What is the unit of electromotive force (e.m.f.)? A ampere B newton C volt D watt
Answer this question and get it marked →The diagram shows a circuit. The circuit contains a component connected in series with a switch and a fuse, allowing it to be switched on and off and giving protection. What is a…
Answer this question and get it marked →