IGCSE Sciences - Co-Ordinated (0973) — October–November 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 a living organism releases energy for growth? A excretion B reproduction C respiration D sensitivity
Answer this question and get it marked →A student draws a diagram of a chicken's egg and includes the magnification, m, of the drawing. The student writes m = x2. The image length on the diagram is 140 mm. What is the…
Answer this question and get it marked →Which colour does Benedict's solution change to when heated with a reducing sugar? A blue B blue-black C orange D purple
Answer this question and get it marked →Which graph shows the effect of temperature on enzyme activity? [Graphs A-D: enzyme activity vs temperature; D rises to an optimum then falls sharply.] A graph A B graph B C graph…
Answer this question and get it marked →Which conditions will result in the highest rate of photosynthesis? A light intensity high, carbon dioxide concentration high B light intensity high, carbon dioxide concentration…
Answer this question and get it marked →Which row about food groups is correct? A food group carbohydrate, main function provide energy, food source examples bread, pasta, rice B fat, tissue growth and repair, bread,…
Answer this question and get it marked →Which label shows the position of the xylem in the cross-section of the root of a dicotyledonous plant? [Diagram: root cross-section with labels A, B, C, D; the xylem is at the…
Answer this question and get it marked →The apparatus shown is set up and left for 10 minutes. The insects move around in the test-tube but the wire mesh prevents them falling into the sodium hydroxide (which absorbs…
Answer this question and get it marked →One response to a frightening situation is an increase in heart rate caused by the release of adrenaline. Which statement about adrenaline is correct? A It is an enzyme produced…
Answer this question and get it marked →Which part of the male reproductive system is correctly matched to its function? A prostate gland - transfers sperm to the urethra B scrotum - holds the testes outside of body C…
Answer this question and get it marked →Continuous variation is defined as a ...(1)... of phenotypes ...(2)... . Which words correctly complete gaps 1 and 2? A 1 limited number, 2 between two extremes B 1 limited…
Answer this question and get it marked →In a food chain, what do all living organisms get from their food? A a supply of water B oxygen for respiration C protection from disease D the energy they need
Answer this question and get it marked →Forests are cut down and burnt in deforestation programmes. As a result of this, which gas in the atmosphere increases in concentration? A carbon dioxide B hydrogen C nitrogen D…
Answer this question and get it marked →Dye X is a mixture of different coloured substances. Chromatography is used to compare X with three other mixtures, P, Q and R. [Chromatogram: spots for X, P, Q, R; P contains the…
Answer this question and get it marked →What do the chemical symbols N2 and Ni represent? A N2 a compound, Ni a compound B N2 a compound, Ni an element C N2 an element, Ni a compound D N2 an element, Ni an element
Answer this question and get it marked →The nucleon number of a hydrogen atom is 1. What is present inside the nucleus of this atom? A one proton and one electron B one proton and one neutron C one proton only D one…
Answer this question and get it marked →The diagram represents an ionic compound formed from three types of atom (key: oxygen, sodium and sulfur). [Diagram: ionic compound with sodium, sulfur and oxygen atoms in the…
Answer this question and get it marked →The diagram shows the electrolysis of dilute sulfuric acid using inert electrodes connected to a 6 V d.c. supply. [Diagram: electrolysis of dilute sulfuric acid; negative and…
Answer this question and get it marked →When petrol burns in a car engine, carbon monoxide, CO, and nitrogen monoxide, NO, are produced. These gases pass through a catalytic converter where carbon monoxide reacts with…
Answer this question and get it marked →Four different oxides are listed. 1 calcium oxide 2 lithium oxide 3 nitrogen oxide 4 phosphorus oxide Which oxides are acidic oxides? A 1 and 2 B 1 and 3 C 2 and 4 D 3 and 4
Answer this question and get it marked →Substance X is mixed with aqueous sodium hydroxide. A green precipitate is produced. Which metal ion is present in X? A Cu2+ B Fe2+ C Fe3+ D Zn2+
Answer this question and get it marked →Potassium is in Group I of the Periodic Table. Which statement about potassium is correct? A It is a relatively hard metal. B It is less dense than lithium. C It has a higher…
Answer this question and get it marked →What is a use for argon? A as a catalyst B in alloys C in lamps D neutralising chemical waste
Answer this question and get it marked →Which metal is extracted from its ore by electrolysis? A aluminium B copper C gold D iron
Answer this question and get it marked →Which gas is present in clean air? A carbon dioxide B carbon monoxide C nitrogen dioxide D sulfur dioxide
Answer this question and get it marked →Which statement about petroleum is correct? A It contains mostly alkene molecules. B It is a mixture of hydrocarbons. C It is separated into fractions by cracking. D Its main…
Answer this question and get it marked →Which statement about poly(ethene) is correct? A It always contains less than 12 carbon atoms. B It is formed from ethane. C It is formed from ethene. D It occurs naturally.
Answer this question and get it marked →The speed-time graph represents part of a car journey. The speed rises linearly from 10 m/s at time 0 to 18 m/s at time 5 s. [Speed-time graph: from (0, 10) to (5, 18).] How far…
Answer this question and get it marked →The mass of an empty measuring cylinder is 15 g. Liquid is poured into it and the total mass is now 95 g. The reading on the measuring cylinder is shown as 57 cm3. [Diagram:…
Answer this question and get it marked →The diagram shows a child of weight 240 N sitting on a see-saw at a distance of 1.6 m from the pivot. [Diagram: see-saw, child 240 N at 1.6 m from pivot.] What is the moment of…
Answer this question and get it marked →Which two energy sources are both non-renewable? A oil and geothermal resources B oil and natural gas C tides and geothermal resources D tides and wind
Answer this question and get it marked →Someone wearing wet clothes can feel cold even on a warm day. Why do they feel cold? A Water gives out heat as it evaporates. B Water takes in heat as it evaporates. C Water…
Answer this question and get it marked →How is thermal energy transferred from the Sun through the vacuum of space? A by conduction and convection B by convection and radiation C by convection only D by radiation only
Answer this question and get it marked →A ray of light enters a parallel-sided glass block. [Diagram: ray refracts into a parallel-sided glass block; possible exit points A, B, C, D.] At which labelled point does the…
Answer this question and get it marked →Which change to a sound wave makes the sound louder? A decreasing the amplitude B decreasing the wavelength C increasing the amplitude D increasing the wavelength
Answer this question and get it marked →Three charged balls P, Q and R are suspended by insulating threads. Ball P is negatively charged. Ball Q is brought close to ball P and the balls move away from each other. Ball Q…
Answer this question and get it marked →Which two electrical quantities are measured in the same unit? A current and potential difference (p.d.) B current and electromotive force (e.m.f.) C potential difference (p.d.)…
Answer this question and get it marked →A battery is connected in a circuit to a 3.0 ohm resistor, a 6.0 ohm resistor and two ammeters P and Q. The resistors are in parallel; ammeter P reads the total current and…
Answer this question and get it marked →The current in an electric kettle used to boil water is 9.0 A. What is the most appropriate rating of fuse to use with this kettle? A 1 A B 3 A C 8 A D 13 A
Answer this question and get it marked →A nuclide of hydrogen is represented by 3/1 H (nucleon number 3, proton number 1). Which row shows the number of protons and the number of neutrons in this nuclide? A protons 1,…
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