IGCSE Science - Combined (0653) — May–June 2025, Paper 22
40 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Movement is a characteristic of all living organisms. Which two other characteristics of living organisms provide the energy for movement? A excretion and nutrition B growth and…
Answer this question and get it marked →Which plant cell structure matches its function? structure function --- --- --- A cell membrane provides strength and support B chloroplast absorbs light energy C ribosome…
Answer this question and get it marked →Which row describes osmosis? osmosis is the net movement of water molecules through a partially permeable membrane: from to --- --- --- A a dilute solution with a higher water…
Answer this question and get it marked →The table shows the results of tests carried out on different food samples. food sample ethanol emulsion test biuret test Benedict's solution test --- --- --- --- 1 negative…
Answer this question and get it marked →Which statement describes enzyme action in humans? A Enzymes become denatured at 0 °C. B The activity of enzymes always increases with an increasing temperature. C The enzyme…
Answer this question and get it marked →Four tubes that contain red hydrogencarbonate indicator are set up as shown. After five hours, the colour of the hydrogencarbonate indicator is recorded. Tube 1: aquatic plant in…
Answer this question and get it marked →A diet provides the correct energy requirements for a person but is not balanced. What are possible effects of this diet? 1 constipation 2 obesity 3 scurvy A 1, 2 and 3 B 1 and 2…
Answer this question and get it marked →What is a function of hydrochloric acid in the stomach? A to help absorption of all food in the stomach B to kill microorganisms in the ingested food C to prevent chemical…
Answer this question and get it marked →Which statement explains why root hair cells have a long, thin shape? A They are squeezed into this shape as they grow between soil particles. B It is the most efficient shape for…
Answer this question and get it marked →Which row describes viruses? are pathogens have a protein coat contain genetic material --- --- --- --- A yes yes yes B yes no no C no yes no D no no yes
Answer this question and get it marked →The graphs show how the rate and depth of breathing varies when a student does four different activities. Which graph shows when the student is most active? Each graph (A-D) plots…
Answer this question and get it marked →Which statement about the use of antibiotics is correct? A Overuse of antibiotics causes the development of bacteria such as MRSA. B Antibiotics are prescribed for infections…
Answer this question and get it marked →The diagram shows a food web. Feeding relationships: grass is eaten by goat, ant and locust; wildflower is eaten by locust; tree is eaten by caterpillar and beetle. Goat is eaten…
Answer this question and get it marked →The table describes three changes of state, W, X and Y. change of state particle arrangement particle motion energy --- --- --- --- W further apart and random faster increases X…
Answer this question and get it marked →Which statement describes a substance that contains covalent bonds? A It is a coloured compound that contains a transition element. B It is a good conductor of electricity when…
Answer this question and get it marked →Which dot-and-cross diagram represents the arrangement of outer-shell electrons in a molecule of nitrogen? Each option shows two overlapping circles labelled N (the two nitrogen…
Answer this question and get it marked →Which statement explains why a reaction is exothermic? A More thermal energy is absorbed by breaking bonds than is released by making bonds. B More thermal energy is absorbed by…
Answer this question and get it marked →Which statement explains why the rate of a reaction is greater at a higher temperature? A The activation energy is higher. B More colliding particles have the minimum energy to…
Answer this question and get it marked →Which word equation represents the reaction of an acid with a carbonate? A acid + carbonate → salt + carbon dioxide B acid + carbonate → salt + carbon dioxide + water C acid +…
Answer this question and get it marked →Which row describes the physical state of the Group VII elements at room temperature? chlorine bromine iodine --- --- --- --- A gas gas liquid B gas liquid solid C liquid liquid…
Answer this question and get it marked →Which statement explains why all Group VIII elements are unreactive? A They all have a complete outer shell of electrons. B They all have only two electrons in their outer shell.…
Answer this question and get it marked →Which element does not produce a gas when added to dilute hydrochloric acid? A copper B iron C magnesium D zinc
Answer this question and get it marked →Which row describes the extraction of iron from its ore? name of ore method of extraction --- --- --- A bauxite electrolysis B bauxite reduction in a blast furnace C hematite…
Answer this question and get it marked →Which process is a physical change? A combustion of solid carbon B cracking of an alkane to give an alkene C fractional distillation of petroleum D rusting of iron
Answer this question and get it marked →The chromatogram of four different substances is shown. Which substance has an Rf value of 0.6? The chromatogram has a baseline at 0 cm and a solvent front at 20 cm. Four spots A,…
Answer this question and get it marked →Potassium iodide reacts with lead(II) nitrate to produce yellow lead(II) iodide and potassium nitrate. 2KI(aq) + Pb(NO3)2(aq) → PbI2(s) + 2KNO3(aq) Which row describes this…
Answer this question and get it marked →Which row shows an electrolyte and the products of electrolysis for this electrolyte? electrolyte products --- --- --- A concentrated aqueous sodium chloride sodium and chlorine B…
Answer this question and get it marked →The diagram shows the horizontal forces acting on a car of mass 1200 kg. A force of 600 N acts to the left and a force of 900 N acts to the right. What is the acceleration of the…
Answer this question and get it marked →A brick of mass 2.0 kg rests on a platform at a height of 15 m above the ground. The brick falls to the ground. The gravitational field strength g is 9.8 N/kg. What is the speed…
Answer this question and get it marked →Which process is the source of the energy released from the Sun? A chemical reactions B geothermal heating C nuclear fission D nuclear fusion
Answer this question and get it marked →What is a property of both solids and liquids? A They always fill a container. B They can flow. C They have a fixed shape. D They have a fixed volume.
Answer this question and get it marked →Which material is a good thermal conductor? A copper B glass C plastic D wood
Answer this question and get it marked →A room contains cold air. An electric heater is used to warm the air. Which statement explains why the warm air rises? A Air contracts as it is warmed. B Particles in warm air…
Answer this question and get it marked →A student vibrates the end of a horizontal rope and sends a wave along the rope. The wave is shown in the diagram. The vertical distance from the top of a crest to the bottom of a…
Answer this question and get it marked →Which description of the image of an object in a plane mirror is correct? A real and smaller than the object B real and the same size as the object C virtual and smaller than the…
Answer this question and get it marked →What is the speed of infrared waves in a vacuum? A 3.0 m/s B 330 m/s C 3.0 × 10^8 m/s D 330 × 10^8 m/s
Answer this question and get it marked →Two charged rods, X and Y, are brought, one at a time, close to positively charged rod Z. Rod Z is repelled by rod X. Rod Z is attracted by rod Y. Which row shows the charges on…
Answer this question and get it marked →There is a current of 2.0 A in a resistor of resistance 2.0 Ω. How much charge flows through the resistor in 4.0 s? A 0.50 C B 2.0 C C 8.0 C D 16 C
Answer this question and get it marked →A 400 Ω resistor and a 100 Ω resistor are connected in parallel. What is the combined resistance of the two resistors? A 40 Ω B 80 Ω C 250 Ω D 500 Ω
Answer this question and get it marked →An object orbits a planet. The period of the orbit is 8.0 hours. The speed of the object is 2.0 km/s. What is the radius of the orbit? A 1.5 × 10^5 m B 9.2 × 10^6 m C 2.9 × 10^7 m…
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