IGCSE Science - Combined (0653) — October–November 2023, Paper 13
40 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →What is osmosis? A the movement of salt across a cell wall B the movement of salt across a partially permeable membrane C the movement of water across a cell wall D the movement…
Answer this question and get it marked →Which row shows the elements that make up proteins? carbon hydrogen nitrogen oxygen A ✓ ✗ ✓ ✗ B ✓ ✓ ✗ ✗ C ✗ ✓ ✗ ✓ D ✓ ✓ ✓ ✓
Answer this question and get it marked →What are enzymes made from? A fat B protein C starch D oil
Answer this question and get it marked →Which row correctly matches an organ of the alimentary canal with its functions? organ absorption digestion egestion ingestion A large intestine yes no no yes B oesophagus no yes…
Answer this question and get it marked →Which process is defined as taking substances into the body through the mouth? A absorption B digestion C egestion D ingestion
Answer this question and get it marked →The apparatus shown can be used to measure the rate of transpiration. leafy shoot air bubble 3 5 centimetre scale capillary tube 8 water Four identical sets of apparatus were set…
Answer this question and get it marked →A student is investigating the differences in composition of samples of inspired and expired air. What can he use to test for carbon dioxide? A biuret solution B limewater C…
Answer this question and get it marked →What is the word equation for aerobic respiration? A carbon dioxide + water → glucose + oxygen B glucose → carbon dioxide + water C oxygen + carbon dioxide → glucose + water D…
Answer this question and get it marked →Which statement about the growth response of plant roots is correct? A They grow away from gravity and away from light. B They grow away from gravity and towards light. C They…
Answer this question and get it marked →Which row describes asexual reproduction? offspring number of a zygote is genetically identical parents produced to the parent A 1 no yes B 1 yes no C 2 no yes D 2 yes no
Answer this question and get it marked →Which statement describes fertilisation in a flowering plant? A fusion of a pollen nucleus with a nucleus in the ovule B fusion of a pollen nucleus with the stigma C transfer of a…
Answer this question and get it marked →The diagram shows the human male reproductive system. Which labelled part is the prostate gland? D A B C
Answer this question and get it marked →The diagram shows part of the carbon cycle. Which arrow represents respiration by decomposers? carbon dioxide in air A B carbon compounds D carbon compounds carbon compounds in…
Answer this question and get it marked →Substance X is an element. It is a gas at room temperature. It is made of X2 molecules. Which diagram represents X? A B C D
Answer this question and get it marked →Which statement about tap water is correct? A It is a compound. B It is a mixture of elements. C It is a pure substance. D It is a solution.
Answer this question and get it marked →Compound X contains one iron atom. It also contains the same number of sulfur atoms as iron atoms and four times as many oxygen atoms as sulfur atoms. What is the formula of…
Answer this question and get it marked →When solid sodium carbonate and dilute hydrochloric acid are mixed, a reaction occurs. During this reaction, carbon dioxide is released and the temperature of the mixture…
Answer this question and get it marked →In which row do all of the changes shown increase the rate of reaction? temperature concentration particle size A decrease increase decrease B decrease decrease increase C…
Answer this question and get it marked →Iron is extracted from its ore using carbon monoxide. The word equation is shown. iron(III) oxide + carbon monoxide → iron + carbon dioxide Which statement is correct? A Carbon…
Answer this question and get it marked →Dilute hydrochloric acid is added to powdered solid X. Hydrogen gas is produced. dilute hydrochloric acid powdered solid X What is X? A zinc B zinc carbonate C zinc hydroxide D…
Answer this question and get it marked →Which test is used to identify ammonia? A A glowing splint relights. B Damp blue litmus paper is bleached. C Damp red litmus paper turns blue. D Limewater turns milky.
Answer this question and get it marked →Which statement about elements in Period 3 of the Periodic Table is correct? A All the elements in Period 3 are metals. B All the elements in Period 3 are non-metals. C Metals are…
Answer this question and get it marked →Hydrogen peroxide decomposes slowly to produce water and oxygen. Element X and a compound of element X cause hydrogen peroxide to decompose more rapidly. What is the position of…
Answer this question and get it marked →Which substance does not react with dilute hydrochloric acid to produce copper chloride? A copper B copper carbonate C copper hydroxide D copper oxide
Answer this question and get it marked →Which gases are greenhouse gases? A carbon dioxide and methane B carbon dioxide and oxygen C methane and nitrogen D nitrogen and oxygen
Answer this question and get it marked →Decane is an alkane. Which statement about decane is correct? A It burns in air to form carbon dioxide and hydrogen. B It is an unsaturated hydrocarbon. C It only contains single…
Answer this question and get it marked →Which process is used to produce alkenes? A addition polymerisation B combustion C cracking D fractional distillation
Answer this question and get it marked →An object travels 6.0 km in two minutes. What is its speed? A 0.050 m / s B 3.0 m / s C 50 m / s D 3000 m / s
Answer this question and get it marked →The graph shows how the speed of a moving car varies with time. speed 0 time Which statement about the car is correct? A The car is accelerating. B The car is at rest at time = 0.…
Answer this question and get it marked →The gravitational field strength on the planet Mercury is 3.7 N / kg. What is the weight of a 10 kg rock on Mercury? A 0.37 N B 3.7 N C 10 N D 37 N
Answer this question and get it marked →A car has an initial kinetic energy of 120 kJ at the bottom of a slope. The car is driven up the slope. At the top of the slope, the car has 260 kJ of kinetic energy and has…
Answer this question and get it marked →Which statement about the boiling point of a substance is correct? A At all temperatures above its boiling point, a substance must be a gas. B At all temperatures above its…
Answer this question and get it marked →A student puts an object made of metal and another object made of plastic in the same freezer for several days. The student removes the two objects from the freezer. When the…
Answer this question and get it marked →What is a use of microwaves? A checking for broken bones B satellite television C tanning lamps D television remote controllers
Answer this question and get it marked →A loudspeaker vibrates at different frequencies. Which frequency of vibration does not produce a sound that a human can hear? A 60 Hz B 600 Hz C 6.0 kHz D 60 kHz
Answer this question and get it marked →A potential difference (p.d.) of 6.0 V is applied across a lamp. The current in the lamp is 1.5 A. What is the resistance of the lamp? A 0.25 Ω B 4.0 Ω C 4.5 Ω D 9.0 Ω
Answer this question and get it marked →A plastic rod is rubbed with a woollen cloth. The rod becomes negatively charged. What happens to the woollen cloth? A It gains electrons and becomes negatively charged. B It…
Answer this question and get it marked →A battery is connected to a heater, an ammeter and a voltmeter. The ammeter measures the current in the heater. The voltmeter measures the potential difference across the heater.…
Answer this question and get it marked →What is the circuit symbol for a component whose only purpose is to protect an electric circuit? A B C D
Answer this question and get it marked →Which risk is increased by using electrical equipment in damp conditions rather than in dry conditions? A the cable to the equipment overheating B the equipment overheating C the…
Answer this question and get it marked →← October–November 2023 Paper 21 · October–November 2023 Paper 12 →