IGCSE Sciences - Co-Ordinated (0973) — May–June 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 →What is a characteristic of all living organisms? A excretion B digestion C photosynthesis D sexual reproduction
Answer this question and get it marked →The diagram shows a typical plant cell with structures labelled X, Y and Z (from the outside inward). [Diagram: plant cell; X = cell wall, Y = cell membrane, Z = cytoplasm.] Which…
Answer this question and get it marked →Which smaller molecules make up larger fat molecules? A glucose and amino acids B glucose and fatty acids C glycerol and amino acids D glycerol and fatty acids
Answer this question and get it marked →Which type of molecules are enzymes? A carbohydrates B fats C oils D proteins
Answer this question and get it marked →The rate of photosynthesis of an aquatic plant is measured by counting the number of bubbles of oxygen produced every minute, as shown. The rate is measured at different light…
Answer this question and get it marked →Starch is mixed with saliva and placed into a bag made of a partially permeable membrane. The bag is placed into a tube filled with water. After one hour, sugar molecules are…
Answer this question and get it marked →What is transported by red blood cells? A glucose B insulin C oxygen D urea
Answer this question and get it marked →A person inflates a balloon by breathing into it. What is the composition of the air in the balloon? A oxygen 0.04%, carbon dioxide 21% B oxygen 4%, carbon dioxide 16% C oxygen…
Answer this question and get it marked →A plant is placed in a box. The box has a hole so that the plant is illuminated from one side. The plant is observed after one week and the shoots have grown towards the light.…
Answer this question and get it marked →Which row is correct for sexual reproduction? A number of parents one, offspring genetically different B one, genetically identical C two, genetically different D two, genetically…
Answer this question and get it marked →The graph shows the masses of samples of two different types of potato, Y and Z (both with bell-shaped distributions of mass). [Graph: number of potatoes vs mass/g for types Y and…
Answer this question and get it marked →A food chain is shown: plant - insect - songbird - hawk. Which statements are correct? 1 The hawk is a consumer. 2 The insect is a carnivore. 3 The songbird is a herbivore. 4 The…
Answer this question and get it marked →Which process removes carbon dioxide from the atmosphere? A combustion B decomposition C photosynthesis D respiration
Answer this question and get it marked →Cyclopentane is a hydrocarbon. The melting point of cyclopentane is -94 C and its boiling point is 49 C. In process 1, the temperature of cyclopentane changes from 55 C to 45 C.…
Answer this question and get it marked →Which statements about chemical changes are correct? 1 The separation of petroleum into gasoline, naphtha and diesel is a chemical change. 2 The separation of water into hydrogen…
Answer this question and get it marked →Which elements react together to form an ionic compound? A carbon and oxygen B nitrogen and hydrogen C potassium and bromine D sodium and lithium
Answer this question and get it marked →Hydrogen peroxide is a compound. A molecule of hydrogen peroxide can be represented as shown (two oxygen atoms and two hydrogen atoms). [Diagram: H-O-O-H molecule; key shows…
Answer this question and get it marked →When concentrated aqueous sodium chloride is electrolysed using inert electrodes, the remaining solution turns red litmus paper to blue. Which substance causes this colour change?…
Answer this question and get it marked →When aqueous sodium hydroxide reacts with dilute hydrochloric acid, the temperature of the reaction mixture increases. Ice cubes take in energy when they melt. Which row is…
Answer this question and get it marked →Dilute hydrochloric acid reacts with calcium carbonate. The equation is CaCO3 + 2HCl - CaCl2 + CO2 + H2O. Which change increases the rate of the reaction? A decreasing the…
Answer this question and get it marked →Which reactions involve oxidation? 1 C + O2 - CO2 2 2NaOH + H2SO4 - Na2SO4 + 2H2O 3 2Mg + O2 - 2MgO 4 CaCO3 - CaO + CO2 A 1 and 3 B 1 and 4 C 2 and 3 D 2 and 4
Answer this question and get it marked →Salts are made when four substances react separately with dilute hydrochloric acid. 1 magnesium 2 magnesium carbonate 3 magnesium hydroxide 4 magnesium oxide Which substances…
Answer this question and get it marked →Lead has a high density of 11.3 g/cm3. Lead(II) iodide is a bright yellow solid. Which property of lead is not a property of a transition element? A Lead conducts electricity. B…
Answer this question and get it marked →Which statements about the noble gas helium are correct? 1 It is unreactive. 2 Atoms of helium have two electrons in their outer electron shell. 3 Atoms of helium have incomplete…
Answer this question and get it marked →Water vapour, carbon dioxide and the noble gases are removed from a 100 cm3 sample of clean air. What is the remaining volume? (clean air is about 78% nitrogen + 21% oxygen) A 1…
Answer this question and get it marked →Which statement about manufacturing processes is correct? A Limestone is manufactured from calcium oxide. B Limestone is manufactured from acidic waste products. C Ethene is…
Answer this question and get it marked →Which molecule reacts with aqueous bromine? [Structures A-D: A = methane, B = propene (contains a C=C double bond), C = ethane, D = propane.] A molecule A B molecule B C molecule…
Answer this question and get it marked →A car travels at constant speed. It is at point X at time = 0. [Graphs A-D: each pair shows a distance-time graph and a speed-time graph. A = straight diagonal distance-time line…
Answer this question and get it marked →The diagrams show all the forces acting on three objects, X, Y and Z. X has 10 N up and 10 N down (balanced). Y has 5 N up and 15 N down (unbalanced). Z has forces that do not…
Answer this question and get it marked →A student places four identical beakers on a bench. Two beakers contain salt water of density 1.1 g/cm3 and two contain pure water of density 1.0 g/cm3. A = 150 cm3 salt water, B…
Answer this question and get it marked →The power rating of an electric kettle is 1500 W. What does this mean? A The kettle requires 1500 J to boil water. B The kettle takes 1500 s to boil water. C The kettle transfers…
Answer this question and get it marked →A glass jar in a warm room has a metal lid that is easy to remove. The jar with the lid on is left in a refrigerator overnight. In the morning, the lid of the jar is difficult to…
Answer this question and get it marked →A beaker contains water that is all at 20 C. A convection current is started in the water (flowing in a loop). Four points are labelled W (top left), X (top right), Y (bottom…
Answer this question and get it marked →Which type of electromagnetic wave is emitted by a television remote controller? A gamma-rays B infrared C ultraviolet D X-rays
Answer this question and get it marked →An electric bell is suspended by a rubber band in a glass jar. The hammer hits the bell and makes it ring. A pump removes air from the jar. The hammer still hits the bell but no…
Answer this question and get it marked →A cell is connected in a circuit. Which statement describes how the electromotive force (e.m.f.) of the cell is measured? A It is measured in newtons using a newton meter…
Answer this question and get it marked →In the circuits shown, all the resistors are identical. [Circuits A-D: identical resistors in series/parallel combinations; B has the resistors arranged to give the smallest…
Answer this question and get it marked →The maximum current in an electric circuit is 10 A. What is the most appropriate rating of a fuse for this circuit? A 5 A B 9 A C 13 A D 25 A
Answer this question and get it marked →A current-carrying wire passes through a flat card. The arrow on the wire shows the direction of the current. [Diagrams A-D: concentric circular field lines on the card around the…
Answer this question and get it marked →A radioactive material has a half-life of 4.0 days. The rate of emission of radiation from a sample of the material is 32 emissions per minute. What was the rate of emission from…
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