IGCSE Sciences - Co-Ordinated (0654) — May–June 2024, Paper 42
12 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Fig. 1.1 is a diagram of a wind-pollinated flower, with parts labelled A, B, C, D, E and F. State which letter in Fig. 1.1 identifies the part where: fertilisation occurs ...…
Answer this question and get it marked →A student heats three substances X, Y and Z in a water-bath. Table 2.1 shows the state before heating, during heating and after cooling: X solid/liquid/solid; Y…
Answer this question and get it marked →Fig. 3.1 shows a sea turtle. On Fig. 3.1, draw an arrow to show the direction of the weight force acting on the sea turtle. Label your arrow with the letter W.
Answer this question and get it marked →Blood glucose concentration is controlled so that it remains within set limits. State the name given to this type of control.
Answer this question and get it marked →Some students investigate the reaction between marble chips and dilute hydrochloric acid. They react marble chips of three different sizes, A, B and C, with excess dilute…
Answer this question and get it marked →Fig. 6.1 shows an electric pressure-washer being used to wash a car. The pressure-washer pumps water at a high pressure through a small nozzle. The cross-sectional area of the…
Answer this question and get it marked →A student investigates antibiotic resistance in one strain of bacteria. They use five different antibiotics on paper discs, placed in a Petri dish with the bacteria and left for…
Answer this question and get it marked →Fig. 8.1 shows the structures of three carbon compounds: ethene (C2H4, with a C=C double bond), ethanoic acid and ethanol. Ethene is an unsaturated hydrocarbon. Explain how the…
Answer this question and get it marked →The element strontium has many naturally occurring isotopes, some of which are unstable. Fig. 9.1 shows a decay curve for one of the isotopes given in Table 9.1 (activity / counts…
Answer this question and get it marked →Red blood cells are specialised to transport oxygen. Describe two ways that red blood cells are adapted for their function.
Answer this question and get it marked →Sulfuric acid is made by the Contact process. Fig. 11.1 shows part of the Contact process (sulfur + oxygen from air - sulfur dioxide - sulfur trioxide, with essential conditions:…
Answer this question and get it marked →Electricity can be generated in different types of power stations. Table 12.1 gives information about six types (energy per kg of fuel / MJ, efficiency of transfer to electrical…
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