IGCSE Science - Combined (0653) — May–June 2024, Paper 31

Fig. 1.1 is a diagram of the alimentary canal and associated organs in humans, labelled A, B, C, D, E, F. State the letter on Fig. 1.1 that identifies the position of: a salivary…

The elements chlorine, bromine and iodine are diatomic covalent molecules. State the meaning of diatomic.

Fig. 3.1 shows an aluminium pan containing water, being heated on a hotplate of a cooker, with a glass lid and a thermometer dipping into the water. The thermometer reads 60 °C.…

Fig. 4.1 shows the pathway taken by water through a plant root, including a soil particle, a root hair cell, cells Q and the xylem leading to the leaf. State the name of the type…

Petroleum is a mixture of hydrocarbons. Fig. 5.1 shows the process that separates petroleum into hydrocarbons (giving refinery gas, fraction A, etc.) and another process, process…

Fig. 6.1 shows a mechanical crane using force P to lift a box from the ground to the top of a building. The box weighs 15 000 N. Calculate the mass of the box. The gravitational…

Fig. 7.1 shows part of the human circulatory system (lungs, heart and blood vessel R), with arrows showing the direction of blood flow. Identify the blood vessel labelled R in…

Solid zinc and dilute sulfuric acid react to form zinc sulfate and hydrogen gas: Zn + H2SO4 → ZnSO4 + H2. A student measures and controls the temperature, the volume and the…

Fig. 9.1 shows an electrical circuit with components labelled E (cell/battery), F (ammeter A), G (variable resistor), H and J (voltmeter V), where H and J are in parallel. State…