IGCSE Sciences - Co-Ordinated (0654) — May–June 2024, 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 processes are examples of excretion? (Columns: release of energy from food; release of oxygen from photosynthesis; key: tick = yes, cross = no.) A B C D
Answer this question and get it marked →2 What are all living organisms made from? A cells B eggs C mesophyll D sperm
Answer this question and get it marked →3 Analysis of a large food molecule shows that it contains the elements carbon, hydrogen and oxygen only. Which food groups could this molecule be from? A carbohydrates and fats…
Answer this question and get it marked →4 The graph shows the mass of product produced by an enzyme-controlled reaction over time when the reaction mixture is placed separately at 37 C and at 60 C. The starting…
Answer this question and get it marked →5 How many molecules of carbon dioxide are needed to produce six molecules of glucose? A 1 B 2 C 3 D 36
Answer this question and get it marked →6 A student investigates the effect of size of gelatine cubes on the rate of digestion by protease. One 8 cm3 cube of gelatine is placed into a beaker of protease and the time to…
Answer this question and get it marked →7 Which graph shows the effect of humidity on the rate of transpiration? (Four graphs A-D plot rate of transpiration against humidity.) A B C D
Answer this question and get it marked →8 A student places a mixture of yeast and glucose in a boiling tube and covers it with a layer of oil. A delivery tube bubbles gas produced by the yeast through limewater. After…
Answer this question and get it marked →9 A person touches a hot object and pulls their hand away. This is a reflex action. What is the pathway for the reflex action? A stimulus - motor neurone - relay neurone - sensory…
Answer this question and get it marked →10 The diagram shows the human male reproductive system, with structures labelled X, Y and Z. Which row identifies structures X, Y and Z? urethra sperm duct prostate gland -----…
Answer this question and get it marked →11 Which row about the nucleus of human cells is correct? description of nucleus number of chromosomes example of cell ----- ------------------------ -----------------------…
Answer this question and get it marked →12 What is an ecosystem? A a chart showing the flow of energy from one organism to another B a diagram giving the energy level of an organism in its environment C a network of…
Answer this question and get it marked →13 Which line shows how the oxygen concentration of the water changes after excess fertiliser has entered a stream? (Graph of oxygen concentration of the water against distance…
Answer this question and get it marked →14 W, X, Y and Z are diagrams representing atoms and molecules. Which statement is correct? A W and Z are molecules and X and Y are atoms. B W, X and Z are molecules and Y is an…
Answer this question and get it marked →15 Which row describes the properties of a covalent compound? volatility electrical conductivity when molten ----- ------------ ------------------------------------- A high none B…
Answer this question and get it marked →16 The equation for the reaction of sodium with water is: 2Na(s) + 2H2O(l) - 2NaOH(aq) + H2(g). Which mass of sodium produces 30 cm3 of hydrogen? A 0.0288 g B 0.0575 g C 28.8 g D…
Answer this question and get it marked →17 Aqueous copper(II) sulfate is electrolysed using carbon electrodes. What is the ionic half-equation for the reaction at the cathode? A Cu2+ + 2e- - Cu B 2H+ + 2e- - H2 C Cu -…
Answer this question and get it marked →18 The energy level diagram for a reaction is shown (products at a higher energy than reactants). The diagram represents an ...(1)... reaction. Heat is ...(2)... during this…
Answer this question and get it marked →19 In which equation is the underlined substance acting as an oxidising agent? (The underlined substance is the first reactant in each.) A AgNO3 + NaCl - AgCl + NaNO3 B Cl2 + 2KBr…
Answer this question and get it marked →20 Universal indicator solution is added to test-tubes W (dilute hydrochloric acid), X (aqueous sodium hydroxide) and Y (aqueous sodium chloride). What are the colours of the…
Answer this question and get it marked →21 Copper is a transition element. Which row shows two properties of copper? property 1 property 2 ----- -------------------- --------------------------- A high melting point…
Answer this question and get it marked →22 Metal X reacts with aqueous metal Y2+ ions. The ionic equation for the reaction is: X + Y2+ - X2+ + Y. What are metals X and Y? X Y ----- ----------- -------- A copper iron B…
Answer this question and get it marked →23 Ammonia is displaced from its salts by reaction with substance Z. Which row identifies substance Z and the test for ammonia? substance Z test for ammonia -----…
Answer this question and get it marked →24 Four equations are listed. 1 H2S2O7 + H2O - H2SO4 + SO3 + H2O 2 2S + 3O2 - 2SO3 3 H2SO4 + SO3 - H2S2O7 4 2SO2 + O2 - 2SO3 Which equations represent reactions that are involved…
Answer this question and get it marked →25 Which substance is produced by the thermal decomposition of limestone? A calcium B calcium carbonate C calcium hydroxide D calcium oxide
Answer this question and get it marked →26 A gasoline fraction from the fractional distillation of petroleum includes compounds with the formulas C6H14 and C12H26. Which statements about these compounds are correct? 1…
Answer this question and get it marked →27 The molecule shown contains some amide linkages (the amide linkage is N-C=O with H on the N). How many amide linkages are present in this molecule? A 4 B 5 C 6 D 9
Answer this question and get it marked →28 A ball is moving at a speed of 3.0 m / s. The ball now accelerates with a constant acceleration of 2.0 m / s2 in the direction that it is moving. What is the speed of the ball…
Answer this question and get it marked →29 What is meant by the moment of a force? A the speed of an object moved by a force B the time taken for a force to move an object C the turning effect of a force D the work done…
Answer this question and get it marked →30 A paralympic athlete of mass 70 kg uses a wheelchair of mass 10 kg in a race. What is the kinetic energy of the athlete and wheelchair when they are moving at 6.0 m / s? A 240…
Answer this question and get it marked →31 The table shows four sources of energy used to generate electricity. Which row about the energy source is correct? source renewable reliable at all times -----…
Answer this question and get it marked →32 Which region of the electromagnetic spectrum is often involved in heat transfer by radiation? A infrared B radio C ultraviolet D X-rays
Answer this question and get it marked →33 The diagram shows the direction of a wave that passes a particle. The particle is made to vibrate by the wave; the direction of vibration of the particle is perpendicular to…
Answer this question and get it marked →34 A plane mirror is fixed to a vertical wall and forms an image of an object. What are the characteristics of the image? A enlarged and upright B enlarged and inverted C same…
Answer this question and get it marked →35 The diagram shows two soft-iron rods JK and LM placed between the poles of two magnets (N pole on the left, S pole on the right; rods in order J K L M). Which row shows the…
Answer this question and get it marked →36 The graph shows how the resistance of a thermistor changes with temperature (resistance / kohm 0-6.0 against temperature / C 0-100). There is a potential difference of 6.0 V…
Answer this question and get it marked →37 A kettle is connected to a 230 V mains supply. The current in the kettle is 10 A. How much energy is transferred in 3.0 minutes? A 12.8 J B 767 J C 6900 J D 414000 J
Answer this question and get it marked →38 What is the function of a fuse in a circuit? A It decreases the resistance of the circuit. B It ensures a constant current in the circuit. C It ensures a constant resistance in…
Answer this question and get it marked →39 What is the purpose of the commutator in a direct current (d.c.) motor? A It reverses the direction of the current in the coil every half turn. B It reverses the direction of…
Answer this question and get it marked →40 A uranium nucleus decays by emitting an alpha-particle. The nuclide equation shows this decay: X over 92 U - 234 over Y Th + alpha-particle. What are the numbers X and Y? X Y…
Answer this question and get it marked →