IGCSE Sciences - Co-Ordinated (0973) — May–June 2025, Paper 12
40 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →The Venus fly trap is a plant that catches insects. The diagram shows an open trap with an insect inside, followed by an arrow to the same trap now closed. Which characteristic of…
Answer this question and get it marked →The diagram shows a plant cell. A structure labelled X forms the outer boundary of the cell. Which row names X and describes its function? name function --- --- --- A cell…
Answer this question and get it marked →The diagram shows the stages of an experiment. A piece of potato of mass 10.0 g is placed in a beaker of dilute sugar solution and left for 30 minutes. It is then carefully dried…
Answer this question and get it marked →Which statements about enzymes are correct? 1 Enzymes are biological catalysts. 2 Enzymes are made of fat. 3 Enzymes are made of protein. A 1 and 2 B 1 and 3 C 1 only D 3 only
Answer this question and get it marked →Which statement about photosynthesis is correct? A A plant uses carbon dioxide and glucose to produce oxygen and water. B A plant uses carbon dioxide and water to produce glucose…
Answer this question and get it marked →Which food helps prevent scurvy? A bread B cheese C eggs D lemons
Answer this question and get it marked →The diagram shows a cross-section of a plant root. A tissue at the centre of the root is labelled S. Which row is correct for tissue S? name of tissue substance transported ---…
Answer this question and get it marked →What increases the risk of coronary heart disease? A reduced salt diet B relaxation therapy C regular exercise D smoking tobacco
Answer this question and get it marked →Which row shows the percentages for inspired air and expired air? inspired air oxygen / % inspired air carbon dioxide / % expired air oxygen / % expired air carbon dioxide / % ---…
Answer this question and get it marked →The diagram shows three types of neurone, labelled P, Q and R. P has a many-branched cell body with no long fibre. Q has a cell body at one end with a long fibre ending in…
Answer this question and get it marked →Which statement about reproduction is correct? A Sexual reproduction involves the fusion of two gamete nuclei. B Sexual reproduction results in the production of genetically…
Answer this question and get it marked →Which row is correct for a human gamete? name of gamete chromosome carried by gamete where gamete is produced --- --- --- --- A egg cell X testes B egg cell Y ovaries C sperm X…
Answer this question and get it marked →Which statement describes a producer? A an organism that obtains its energy from dead or waste organic matter B an organism that makes its own organic nutrients using energy from…
Answer this question and get it marked →Which row describes particles present in 25/12 Mg^2+ (mass number 25, proton number 12)? neutrons electrons --- --- --- A 12 10 B 12 12 C 13 12 D 13 10
Answer this question and get it marked →The formula of ethanol is C2H5OH. How many different elements are present in ethanol? A 1 B 3 C 4 D 9
Answer this question and get it marked →The apparatus used in the electrolysis of concentrated aqueous sodium chloride is shown. The circuit includes a switch labelled 1; the positive electrode is labelled 3 and the…
Answer this question and get it marked →Which statements about endothermic reactions are correct? 1 Thermal energy is taken in from the surroundings. 2 Thermal energy is released to the surroundings. 3 The temperature…
Answer this question and get it marked →Which element causes a compound to be coloured? A a Group I element B a Group II element C a Group VIII element D a transition element
Answer this question and get it marked →Which property explains why aluminium is used to make food containers? A low density B high strength C resistant to corrosion D shiny
Answer this question and get it marked →What is an alloy? A a compound B a mixture C a metallic element D a non-metallic element
Answer this question and get it marked →Which row describes the order of reactivity of the metals (from most reactive to least reactive)? most reactive - - least reactive --- --- --- --- --- A copper calcium zinc…
Answer this question and get it marked →Which row shows the colour of copper(II) sulfate and of cobalt(II) chloride when they are added to water? copper(II) sulfate cobalt(II) chloride --- --- --- A blue blue B blue…
Answer this question and get it marked →The diagram represents the composition of clean, dry air as a pie chart. A very small sector is labelled gas Y and the large remaining sector is labelled gas X. Which row…
Answer this question and get it marked →Which property allows petroleum to be separated by fractional distillation? A boiling point B colour C density D melting point
Answer this question and get it marked →Which compound is the main constituent of natural gas? The four options show displayed (structural) formulae: A a straight chain of four carbon atoms each bonded to hydrogen…
Answer this question and get it marked →Which statement about alkanes is correct? A They contain one double covalent bond. B They contain only single covalent bonds. C They form polymers. D They react with aqueous…
Answer this question and get it marked →When aqueous copper(II) sulfate reacts with aqueous sodium hydroxide, a blue precipitate forms. Which method is used to remove the precipitate from the reaction mixture? A…
Answer this question and get it marked →The diagrams show the only forces acting on each of four objects moving in a straight line. Which object is moving at constant speed in a straight line? A a single 2.0 N force…
Answer this question and get it marked →A person pushes a drawing pin into a cork with their thumb. The sharp point of the pin presses on the cork and the flat head presses on the thumb. Which statement explains why the…
Answer this question and get it marked →The diagram shows four objects, P, Q, R and S, with uniform density, resting on different horizontal surfaces. The objects are all drawn to the same scale. P is a medium cube; Q…
Answer this question and get it marked →Liquid in a beaker evaporates quickly. Which row shows what happens to the mass and to the temperature of the liquid remaining in the beaker? mass temperature --- --- --- A…
Answer this question and get it marked →The diagram shows a type of double glazing in a window. The double glazing consists of two sheets of glass separated by a vacuum. Which methods of energy transfer are prevented by…
Answer this question and get it marked →A student investigates the motion of a small ball that is floating on water in a tank. A wave passes along the water surface from left to right. What happens to the ball? A It…
Answer this question and get it marked →Light travels from air into water. A ray in air strikes the boundary; angle X is between the incoming ray and the normal in air, and angle Y is between the ray in water and the…
Answer this question and get it marked →The table shows the highest frequency of sound heard by different animals. animal highest frequency heard / kHz --- --- bat 200 bird 10 cat 79 The highest frequency sound that a…
Answer this question and get it marked →Which circuit is suitable for determining the resistance of the fixed resistor? Each option shows a cell, a switch and the fixed resistor, with a voltmeter (V) and ammeter (A)…
Answer this question and get it marked →The diagram shows a circuit containing three cells, a variable resistor and an electric motor, all connected in series. Which actions together must increase the speed of the…
Answer this question and get it marked →The diagram shows a 3.0 ohm resistor connected to a 6.0 ohm resistor. What is a possible combined resistance of the two resistors? A 2.0 ohm B 3.0 ohm C 4.5 ohm D 9.0 ohm
Answer this question and get it marked →A scientist works with a radioactive source that emits gamma (gamma)-rays. The scientist takes several precautions. Which precaution does not give the scientist any protection? A…
Answer this question and get it marked →The orbit of a planet lies between the orbit of Venus and the orbit of Mars. What is the planet? A Saturn B Jupiter C Earth D Uranus
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