IGCSE Sciences - Co-Ordinated (0973) — May–June 2023, Paper 12
40 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Which is not a characteristic of all living organisms? A excretion B growth C photosynthesis D sensitivity
Answer this question and get it marked →Which statement about the structures found in animal and plant cells is correct? A Both have cell walls. B Only plant cells have a cell membrane. C Both have cytoplasm. D Only…
Answer this question and get it marked →Which row shows the elements and the small molecules that are used to make the larger molecules? A elements: carbon, hydrogen and oxygen; small molecule: glucose; larger molecule:…
Answer this question and get it marked →Which type of molecules speed up chemical digestion? A carbohydrates B enzymes C hormones D fatty acids
Answer this question and get it marked →The diagram shows a leaf, still attached to a plant, with both green and white areas that have been partly covered with black paper. The leaf is left in bright light for six hours…
Answer this question and get it marked →Which nutrient is needed to make strong bones and teeth? A calcium B fat C starch D fibre
Answer this question and get it marked →The diagram shows a shoot at the start of an experiment investigating transpiration. The mass of the shoot, measuring cylinder, water and oil is measured as 85.84 g. The apparatus…
Answer this question and get it marked →During cold weather, warm blooded animals, such as mammals and birds, require more food. Which statement explains the reason for this? A energy required to maintain constant body…
Answer this question and get it marked →A person leaves an air conditioned building. The temperature of the air conditioned building is 16 C. The outside temperature is 39 C. Which statement describes one response to…
Answer this question and get it marked →The diagram shows a section through a flower with structures labelled S, R, Q and P. [Diagram: section through a flower; S = anther region, R = filament, P = ovary, Q = lower…
Answer this question and get it marked →Fingerprints are classified by their shape. A class of students identified the type of fingerprint they have on the thumb of their left hand. The chart shows the results as…
Answer this question and get it marked →The diagram shows a food chain with four organisms labelled A, B, C and D connected by arrows. [Diagram: food chain A, B, C, D; the first organism is the producer.] Which is the…
Answer this question and get it marked →Which row about the effects of deforestation is correct? A risk of flooding: decreased; amount of carbon dioxide in atmosphere: decreased B risk of flooding: decreased; carbon…
Answer this question and get it marked →Hexane and octane are liquid hydrocarbons that mix together. [Diagrams A-D: separation apparatus, some with heating; D shows fractional distillation with a fractionating column.]…
Answer this question and get it marked →When solid zinc carbonate is heated, a different solid and a gas are formed. Which type of change occurs? A chemical B exothermic C physical D separation
Answer this question and get it marked →An atom of osmium is represented by 190/76 Os (nucleon number 190, proton number 76). How many neutrons are in this atom? A 76 B 114 C 190 D 266
Answer this question and get it marked →The structures of some compounds are shown. 1 ethanol structure (CH3CH2OH), formula C2H6O 2 O=C=O, formula CO2 3 nitric acid structure (H-O-N(=O)-O), formula HNO3 4 O=S=O, formula…
Answer this question and get it marked →Molten lead(II) bromide is electrolysed using inert electrodes. An element is produced at the negative electrode. [Diagram: power supply with + and - terminals, inert electrodes…
Answer this question and get it marked →Potassium chloride is added to water. The temperature of the solution decreases as the potassium chloride dissolves. Which type of reaction occurs? A endothermic B exothermic C…
Answer this question and get it marked →Iron is extracted from its ore in the blast furnace. One of the reactions involved is shown. Fe2O3 + 3CO - 2Fe + 3CO2 Which statement is correct? A Iron(III) oxide and carbon…
Answer this question and get it marked →Potassium oxide and sulfur dioxide are both soluble in water. Which row describes properties of these oxides? A oxide potassium oxide, pH 14, damp red litmus turns blue B oxide…
Answer this question and get it marked →The box lists four substances: Br2, CO, Cu, Na. Which substance is an element that forms a basic oxide and coloured compounds? A Br2 B CO C Cu D Na
Answer this question and get it marked →Which statement about the treatment of the water supply is correct? A Water from reservoirs and rivers is filtered to remove dissolved impurities. B Chlorine is added to the water…
Answer this question and get it marked →Which element is used in the manufacture of sulfuric acid? A carbon B hydrogen C nitrogen D sulfur
Answer this question and get it marked →Which statements about limestone are correct? 1 It contains calcium oxide. 2 It is used to manufacture lime. 3 It neutralises acidic industrial waste products. 4 It neutralises…
Answer this question and get it marked →Naphtha is obtained by the fractional distillation of petroleum. Which statements about naphtha are correct? 1 It burns to form carbon dioxide and water. 2 It is a mixture of…
Answer this question and get it marked →Which diagram represents a molecule that is formed by fermentation? [Diagrams A-D: A = methane CH4, B = ethane C2H6, C = ethene C2H4, D = ethanol C2H5OH.] A diagram A B diagram B…
Answer this question and get it marked →Two children X and Y pull on a rope in opposite directions. The diagram shows the size of each force and its direction: X pulls with 500 N, Y pulls with 450 N, in opposite…
Answer this question and get it marked →A boy pulls a nail from a block of wood using a hammer. The boy pulls the hammer with a force of 15 N. The applied force acts at a perpendicular distance of 0.22 m from the pivot;…
Answer this question and get it marked →Electricity is generated using different sources of energy. Which energy source is non-renewable? A coal B hydroelectric C solar D wind
Answer this question and get it marked →Which statement about gas particles is not correct? A Increasing the temperature of a gas makes the gas particles move more slowly. B The gas particles are in constant random…
Answer this question and get it marked →Two methods of cooking are grilling under a red-hot heater and frying in a shallow metal pan. [Diagrams: method 1 = grilling (radiation through air), method 2 = frying (conduction…
Answer this question and get it marked →What is the name of the distance between two consecutive crests of a water wave? A amplitude B frequency C speed D wavelength
Answer this question and get it marked →An object is placed in front of a plane mirror on a wall. What are the characteristics of the image formed? A same size as object and inverted top to bottom B same size as object…
Answer this question and get it marked →A plastic rod is rubbed with a cloth and the rod becomes positively charged. What happens during this process? A Negative charges move from the cloth to the rod. B Negative…
Answer this question and get it marked →Which material is used for the core of an electromagnet? A aluminium B copper C iron D steel
Answer this question and get it marked →The diagrams show four identical resistors connected together in different arrangements. [Diagrams A-D: series/parallel combinations of four identical resistors; D = all in…
Answer this question and get it marked →There is a current-carrying wire perpendicular to the page. The direction of the current is into the page. [Diagrams A-D: concentric circular field lines around the wire with…
Answer this question and get it marked →The diagram shows how the count rate for a radioactive isotope varies with time, decaying with a half-life of 15 hours. [Decay curve: count rate (counts/second) vs time/hours.]…
Answer this question and get it marked →The diagram represents three types of ionising radiation L, M and N directed towards a sheet of paper, a sheet of aluminium foil and a block of lead, showing whether each type…
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