IGCSE Sciences - Co-Ordinated (0654) — October–November 2023, Paper 22
40 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →1 Which characteristics of living things are demonstrated by phototropism? 1 growth
Answer this question and get it marked →4 sensitivity A 1 and 2 B 1 and 4 C 2 and 3 D 3 and 4 2 What is osmosis? A the diffusion of sugar molecules from a concentrated solution to a dilute solution through a partially…
Answer this question and get it marked →5 Which row shows the correct raw materials and products of photosynthesis? raw materials products A CO2 H2O C6H12O6 O2 B C6H12O6 H2O CO2 O2 C O2 CO2 C6H12O6 H2O D O2 C6H12O6 CO2…
Answer this question and get it marked →6 Which row provides the greatest amount of the nutrient needed to move food through the alimentary canal? nutrient content / 100 g calcium / mg fibre / g protein / g sugar / g A…
Answer this question and get it marked →7 The rates of water uptake and loss are measured in four leaves. The results are shown in the table. Which leaf is least likely to wilt? rate of water uptake rate of water loss /…
Answer this question and get it marked →8 An experiment is set up, as shown. level X boiling tube coloured liquid live insects wire mesh soda lime (absorbs carbon dioxide) What will happen to the level of coloured…
Answer this question and get it marked →9 The diagram shows a section through the front of the eye and a front view of the eye. Q P R pupil Which muscles contract when viewing a distant object in dim light? A P and R B…
Answer this question and get it marked →10 The diagram shows human gamete formation and fertilisation. male gametes male made in V gametes fertilisation occurs in Z female gametes female made in W gametes Which row is…
Answer this question and get it marked →11 Which statement about variation is correct? A Continuous variation results only from environmental differences. B Continuous variation results only from genetic differences. C…
Answer this question and get it marked →12 The diagram shows a North American food web. mountain lion snake owl fox deer mice birds squirrel rabbit beech tree berries grasses Which organism is both a primary and…
Answer this question and get it marked →13 The concentration of carbon dioxide in the atmosphere has increased during the last 200 years. What has contributed to this increase? A burning large areas of forest B…
Answer this question and get it marked →14 A sample of water contains two useful substances, insoluble chalk and a soluble salt. Which two processes are used to individually separate the insoluble chalk from the soluble…
Answer this question and get it marked →15 Which statement about isotopes of the same element is correct? A They have the same number of protons but different number of electrons. B They have the same number of protons…
Answer this question and get it marked →16 When dilute sodium hydroxide is added to aqueous iron(II) sulfate, insoluble iron(II) hydroxide and aqueous sodium sulfate are formed. What is the ionic equation for this…
Answer this question and get it marked →17 Concentrated aqueous sodium chloride is electrolysed using inert electrodes. Which row describes how the number of sodium ions and the number of chloride ions changes during…
Answer this question and get it marked →18 Which change decreases the frequency of collisions between reactant particles? A increasing the concentration of reactant solutions B increasing the pressure on gaseous…
Answer this question and get it marked →19 Iron displaces copper ions from its aqueous salts. An equation for this reaction is shown. Fe + Cu2+ Fe2+ + Cu What is the reducing agent in this reaction? A Cu B Cu2+ C Fe D…
Answer this question and get it marked →20 Solid S is added to dilute hydrochloric acid in the apparatus shown. solid S + dilute hydrochloric acid universal indicator solution The universal indicator solution shows the…
Answer this question and get it marked →21 Which statements about the halogens are correct? 1 They are diatomic metals. 2 Their atoms have seven outer-shell electrons. 3 Going down the group, they change from solid to…
Answer this question and get it marked →22 Which statement explains why argon is used to fill lamps? A It is a gas. B It is colourless. C It is reactive. D It is unreactive. 9
Answer this question and get it marked →23 W, X, Y and Z are metals. Three statements about these metals are listed. 1 Metal W reduces the oxide of X. 2 Metal Z is not able to reduce the oxide of W, but it does reduce…
Answer this question and get it marked →24 The change in the concentration of carbon dioxide in the atmosphere over time is shown. 400 380 360 CO2 concentration 340 / ppm 320 300 280 1900 1920 1940 1960 1980 2000 year…
Answer this question and get it marked →25 Which equation does not represent a reaction that occurs in the Contact process? A CaO + SO2 CaSO3 B H2S2O7 + H2O 2H2SO4 C 2SO2 + O2 2SO3 D S + O2 SO2
Answer this question and get it marked →26 Which word equation describes the manufacture of lime from limestone? A calcium carbonate calcium hydroxide + carbon dioxide B calcium carbonate calcium oxide + carbon…
Answer this question and get it marked →27 Which row about the formation of condensation polymers is correct? monomer description product formation A contains C=C double bond the condensation polymer only B contains C=C…
Answer this question and get it marked →28 A student tests three identical springs that obey Hooke’s Law. Each spring stretches by 3.0 cm when a 3.0 N load is attached to one end of it. The three springs are connected…
Answer this question and get it marked →29 The diagram shows a crane supporting a load of 6000 N. The horizontal distance between the load and the pivot is x. The load is balanced about the pivot by a concrete block of…
Answer this question and get it marked →30 A rectangular block weighs 1200 N and has the dimensions shown. 10 cm 8.0 cm 15 cm What is the minimum pressure that the block can exert on the ground by standing on one of its…
Answer this question and get it marked →31 A brick falls from rest at a height of 45 m above the ground. The acceleration of free fall g is 10 m / s2. There is no air resistance. What is the speed of the brick as it…
Answer this question and get it marked →32 For which energy resource is the Sun the source of all the energy stored? A geothermal B nuclear fission C tidal D wind
Answer this question and get it marked →33 Which change on its own increases the sensitivity of a liquid-in-glass thermometer? A decreasing the internal diameter of the tube B increasing the internal diameter of the…
Answer this question and get it marked →34 The amplitude of a sound wave increases, and the frequency of the wave decreases. What is the effect on the loudness of the sound and on the pitch of the sound? loudness pitch…
Answer this question and get it marked →35 A plastic rod is rubbed with a cloth. The rod becomes positively charged. Which statement describes why this happens? A Electrons move from the cloth to the rod. B Electrons…
Answer this question and get it marked →36 Which graph is the current–voltage characteristic of a filament lamp? A B current current 0 0 0 voltage 0 voltage C D current current 0 0 0 voltage 0 voltage 15
Answer this question and get it marked →37 A lamp is connected in four circuits in turn. The batteries are identical and the resistors are identical. In which circuit is the lamp the brightest? A B C D
Answer this question and get it marked →38 The series circuit shown includes a single component hidden in a box. The switch is open. component hidden in box The switch is now closed and the lamp lights briefly before…
Answer this question and get it marked →39 The diagrams show a wire carrying a current out of the page. Which diagram shows the pattern of magnetic field lines near the wire? A B C D current out current out current out…
Answer this question and get it marked →40 Electric and magnetic fields can cause deflection of ionising radiation. Which statements about the deflection are correct? 1 In an electric field, -particles and -particles…
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