IGCSE Science - Combined (0653) — May–June 2023, Paper 11
40 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Which characteristic of living organisms involves chemical reactions in cells that break down nutrient molecules and release energy? A excretion B nutrition C respiration D…
Answer this question and get it marked →Which structures are present in an animal cell? cell membrane cell wall cytoplasm nucleus --- --- --- --- --- A ✓ ✗ ✓ ✓ B ✓ ✓ ✗ ✓ C ✓ ✗ ✗ ✓ D ✗ ✓ ✓ ✗ key: ✓ = present, ✗ = not…
Answer this question and get it marked →The table shows the results of tests carried out on a sample of food. test result Benedict’s orange iodine brown biuret purple Which nutrients are in the food? A protein, reducing…
Answer this question and get it marked →The diagram shows a section through part of a leaf. Which label is correct? A upper epidermis B spongy mesophyll layer C chloroplast D stoma
Answer this question and get it marked →What is the purpose of chemical digestion? A to absorb minerals including calcium and iron B to pass food out as faeces C to break down large nutrient molecules into smaller…
Answer this question and get it marked →The diagram shows a cross-section through a plant stem. Which labelled part is the xylem? D A C B
Answer this question and get it marked →The diagram shows a section through the heart. Which vessel is the pulmonary vein? D A B C
Answer this question and get it marked →The diagram shows the human gas exchange system. Which labelled part is the lung? B A C D
Answer this question and get it marked →What is the word equation for aerobic respiration? A carbon dioxide + glucose → oxygen + water B carbon dioxide + water → glucose + oxygen C glucose + water → carbon dioxide +…
Answer this question and get it marked →What are features of sexual reproduction? fusion nature of offspring of nuclei A no genetically different B yes genetically identical C no genetically identical D yes genetically…
Answer this question and get it marked →Which structure in a flower produces pollen? A sepal B stamen C stigma D style
Answer this question and get it marked →What is the primary consumer in the food chain shown? A B C D grass grasshopper frog snake
Answer this question and get it marked →What is an effect of deforestation on the environment? A increased carbon dioxide in the atmosphere B improved soil condition C reduced levels of flooding D increased variety of…
Answer this question and get it marked →Which diagram represents particles in a gaseous element? A B C D
Answer this question and get it marked →What is the relative mass of a proton and the relative charge on a proton? relative mass relative charge A 0.0005 +1 B 0.0005 –1 C 1 –1 D 1 +1
Answer this question and get it marked →Sodium reacts with chlorine to form sodium chloride. Which statement describes a change that occurs during this reaction? A Each chlorine atom loses one proton. B Each sodium atom…
Answer this question and get it marked →Which row shows the formula of sulfuric acid and the number of different elements it contains? number of formula elements A H2SO3 3 B H2SO3 6 C H2SO4 3 D H2SO4 7
Answer this question and get it marked →Which label identifies the cathode in the electrolysis experiment shown? A D + – B C
Answer this question and get it marked →Which reactions are exothermic? 1 a reaction that gets cooler 2 a reaction that gives out energy 3 a reaction that takes in energy 4 the combustion of methane A 1 and 2 B 1 and 3…
Answer this question and get it marked →In which chemical reaction is copper reduced? A anhydrous copper sulfate + water → hydrated copper sulfate B copper carbonate + hydrochloric acid → copper chloride + water +…
Answer this question and get it marked →Dilute hydrochloric acid is tested with universal indicator and with calcium carbonate. Which row shows the pH and describes the reaction with calcium carbonate? pH reaction with…
Answer this question and get it marked →The results of two tests on a solution of substance R are shown. test result aqueous sodium red-brown precipitate formed, hydroxide added insoluble in excess dilute nitric acid…
Answer this question and get it marked →Which statement about Period 2 of the Periodic Table is correct? A All the elements are non-metals. B There is a change from metal to non-metal, going from left to right. C There…
Answer this question and get it marked →Cobalt is a transition element. What is a property of cobalt? A It often acts as a catalyst. B It forms white compounds. C It has a low density. D It is more reactive than Group I…
Answer this question and get it marked →Copper oxide and excess carbon are mixed together. The mass before heating is 12.2 g. The mixture is heated strongly and allowed to cool. The mass after heating is 10.4 g. Why…
Answer this question and get it marked →Water is added separately to anhydrous copper(II) sulfate and to anhydrous cobalt(II) chloride. Which row shows the colour changes that occur? copper(II) sulfate cobalt(II)…
Answer this question and get it marked →What is produced when propane, a hydrocarbon, undergoes complete combustion? A carbon dioxide and water B carbon dioxide only C carbon monoxide and water D carbon monoxide only
Answer this question and get it marked →The diagram shows a metal rod placed next to a 5 cm scale. metal rod 0 1 2 3 4 5 cm What is the length of the rod? A 2.2 cm B 2.4 cm C 2.7 cm D 2.8 cm
Answer this question and get it marked →A solid cuboid block of metal has density →. The diagram shows its dimensions. y x z Which expression is used to calculate the mass of the block? → → A B C →xy D →xyz xy xyz
Answer this question and get it marked →Four solid objects are placed on a horizontal bench. They all have the same weight and they are drawn to the same scale. Which object exerts the greatest pressure on the bench? A…
Answer this question and get it marked →Which list of sources of energy contains non-renewable sources only? A natural gas, nuclear fission and petroleum B natural gas, nuclear fission and wind C natural gas, petroleum…
Answer this question and get it marked →Solar cells mounted on a boat produce electrical energy to power the motor. solar cells Which resource does this energy come from? A hydroelectric energy B light energy C tidal…
Answer this question and get it marked →The molecules in a liquid are close together. What are other features of the molecules in a liquid? A They are arranged in a regular pattern but change positions with each other.…
Answer this question and get it marked →What is the melting point of ice and what is the boiling point of water? melting point boiling point / °C / °C A –10 110 B 0 100 C 100 0 D 110 –10
Answer this question and get it marked →Which substance is the best conductor of thermal energy? A iron B rubber C water D wood
Answer this question and get it marked →A thin converging lens forms a real image of an object. In the diagrams, each point labelled F is a principal focus of the lens. Which diagram shows how the real image of the…
Answer this question and get it marked →The string of a musical instrument moves regularly up and down several times each minute. This causes the air to vibrate at the same rate and the vibrations of the air cause a…
Answer this question and get it marked →WX and YZ are rods that are uniformly electrically charged. W X Y Z The rods are brought close together and end X repels end Y. What happens when ends X and Z are brought close…
Answer this question and get it marked →Which circuit is used to determine the resistance of resistor R? A B R R A A V V C D R V V R A A
Answer this question and get it marked →Which arrangement of resistors has the smallest combined resistance? A B 2.0 : 3.0 : 4.0 : 2.0 : 3.0 : 4.0 : C D 2.0 : 3.0 : 2.0 : 3.0 : 4.0 : 4.0 : reasonable effort has been…
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