IGCSE Sciences - Co-Ordinated (0654) — October–November 2024, 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 things is described as the removal of toxic materials and substances in excess of requirements? A excretion B homeostasis C nutrition D respiration
Answer this question and get it marked →The photographs show some onion cells before and after being placed in a concentrated solution of glucose. What explains the appearance of the onion cells after placing them into…
Answer this question and get it marked →Three food tests are carried out on a sample of food. The results are: Benedict's - blue; biuret - blue; iodine - blue-black. From these results, which nutrient is in the food? A…
Answer this question and get it marked →One method of preventing food spoilage is to store it at 4 degrees C in a refrigerator. Why does storing food at low temperatures help to prevent food spoilage? A It decreases…
Answer this question and get it marked →The diagram shows a plan of the cross-section of a dicotyledonous leaf, with a part labelled P. What is the name of the part labelled P? A palisade mesophyll B spongy mesophyll C…
Answer this question and get it marked →What is the dietary importance of fibre? A It builds and repairs tissue. B It builds strong bones and teeth. C It helps to prevent constipation. D It provides a source of iron.
Answer this question and get it marked →Selexipag is a drug used to treat a condition where the blood pressure going to the lungs is too high. The drug works by widening the blood vessel leading to the lungs to reduce…
Answer this question and get it marked →The list shows some processes that occur in the body: 1 cell division; 2 oxygen diffusion; 3 protein synthesis; 4 temperature regulation. Which processes use energy released by…
Answer this question and get it marked →In which order does an impulse pass along neurones during a reflex action? A motor - relay - sensory B motor - sensory - relay C sensory - motor - relay D sensory - relay - motor
Answer this question and get it marked →Before fertilisation in flowering plants, which structure must the pollen nucleus pass through to reach the nucleus in the ovule? A filament B petal C stamen D style
Answer this question and get it marked →Albinism is a genetic condition which results in an absence of pigment in the skin, hair and eyes. B is the dominant allele for black; b is the recessive allele for albinism. If…
Answer this question and get it marked →What is the correct order for the food chain from the information given: beetles are herbivores; mice eat the beetles; owls are the tertiary consumers; the leaves of a plant are…
Answer this question and get it marked →The diagram shows part of the carbon cycle: carbon dioxide in the atmosphere is linked to plants, animals, fossil fuels, and factories and power stations, with a process X. Which…
Answer this question and get it marked →A student adds 5 g of magnesium ribbon to 20 cm^3 of dilute hydrochloric acid in a beaker. The student measures how long it takes for the effervescence to stop. Which pieces of…
Answer this question and get it marked →Sea water is a mixture that contains sodium chloride dissolved in water. Which row describes sea water (solvent / solute / solution)? A water / sea water / sodium chloride B sea…
Answer this question and get it marked →What is the dot-and-cross diagram for a water molecule (an oxygen atom bonded to two hydrogen atoms, H-O-H)? A oxygen sharing one bonding pair with each hydrogen, with two lone…
Answer this question and get it marked →The electronic structures of carbon (4 outer electrons) and of hydrogen (1 electron) are shown. What is the formula of a compound formed between carbon and hydrogen? A CH2 B CH3 C…
Answer this question and get it marked →Which elements are formed at the electrodes during the electrolysis of concentrated aqueous sodium chloride (anode / cathode)? A chlorine / sodium B chlorine / hydrogen C hydrogen…
Answer this question and get it marked →Four different substances are added to the same acid of the same concentration in reactions W, X, Y and Z. The initial temperature of the acid before each reaction is 21 degrees…
Answer this question and get it marked →Dilute hydrochloric acid reacts with solid calcium carbonate. Which change decreases the rate of the reaction? A decreasing the concentration of the hydrochloric acid B decreasing…
Answer this question and get it marked →Which statement about oxidation is correct? A It occurs when an element or compound chemically combines with oxygen. B It occurs when an element or compound forms a mixture with…
Answer this question and get it marked →Which substance is classified as an acidic oxide? A calcium oxide B carbon dioxide C lithium oxide D sodium oxide
Answer this question and get it marked →The results of two tests on compound P are: flame test - red flame; addition of acidified silver nitrate - white precipitate. What is P? A lithium bromide B lithium chloride C…
Answer this question and get it marked →What is not a property of transition elements? A form coloured compounds B good electrical conductivity C high melting point D low density
Answer this question and get it marked →What is the order of reactivity of metals, from highest to lowest? A aluminium - calcium - copper - iron B calcium - iron - copper - aluminium C calcium - magnesium - iron -…
Answer this question and get it marked →A colourless liquid is tested with blue cobalt(II) chloride paper. The blue paper turns pink. What does this test prove that the liquid contains? A an acid B an alkali C ethanol D…
Answer this question and get it marked →What are the products of the complete combustion of ethanol? A carbon and hydrogen B carbon dioxide and hydrogen C carbon dioxide and water D carbon monoxide and water
Answer this question and get it marked →A person runs 5000 m in 1200 s and then walks a further 3000 m in 1800 s. What is their average speed for this journey? A 1.7 m / s B 2.7 m / s C 2.9 m / s D 5.8 m / s
Answer this question and get it marked →The diagram shows the two forces acting on a skydiver: 300 N upwards and 700 N downwards. What is the resultant force on the skydiver? A 400 N downwards B 400 N upwards C 1000 N…
Answer this question and get it marked →When a ball is kicked vertically upwards, its initial kinetic energy is 12 J. When the ball arrives back at its starting point, its kinetic energy is 8.0 J. Which statement…
Answer this question and get it marked →A motor lifts a load vertically upwards at constant speed. The weight of the load is known. Which of the other quantities (height lifted / time to lift the load) must be known to…
Answer this question and get it marked →Which material is a poor thermal conductor? A air B aluminium C copper D iron
Answer this question and get it marked →A ray of light travels from air into a parallel-sided glass block and then back into air. Which diagram shows the path of the light (refraction towards the normal on entering the…
Answer this question and get it marked →Which electromagnetic waves have the lowest frequency? A gamma B infrared C ultraviolet D radio
Answer this question and get it marked →Object P is positively charged and object Q is negatively charged. Which row describes the force between P and Q and explains how they became charged (force between P and Q /…
Answer this question and get it marked →A lamp is connected to a 3.0 V battery. The resistance of the lamp is 60 ohms. What is the current in the lamp? A 0.050 mA B 20 mA C 50 mA D 180 mA
Answer this question and get it marked →The diagram shows two resistors connected in parallel to a battery; the circuit contains a voltmeter and an ammeter. A third resistor is now connected in parallel with these two…
Answer this question and get it marked →Which diagram shows the pattern and the direction of the magnetic field around a straight wire that is carrying a current into the page (concentric circles, clockwise when viewed…
Answer this question and get it marked →An element has two isotopes. Which statement about the nuclei of atoms of these isotopes is correct? A They have equal numbers of neutrons but different numbers of electrons. B…
Answer this question and get it marked →The graph shows how the rate of emission of radiation from a radioactive sample changes with time, starting at 80 emissions/minute at time 0 and falling over a scale of 0 to 10…
Answer this question and get it marked →