Sec 2 Science GMSS EOY 2025

Candidate Name Class Index Number LOWER SECONDARY SCIENCE Sec 2 G3 Additional materials: Optical Answer Sheet 1 hour 30 minutes Setter: Mr Kelvin Tay 1 October 2025 READ THESE INSTRUCTIONS FIRST Write your name, index number and class on all the work you hand in. Write in dark blue or black pen on both sides of the paper. Do not use staples, paper clips, highlighters, glue or correction fluid. Section A There are twenty questions in this section. Answer all questions. For each question, there are four possible answers, A, B, C or D. Choose the one you consider correct and record your choice in soft pencil on the separate optical answer sheet. Section B Answer all the questions in the spaces provided. Section C Answer all questions in the spaces provided. The number of marks is given in brackets [ ] at the end of each question or part question. All numerical answers are to be rounded off to 3 significant figures. For Examiner’s Use Section A 20 Section B 30 Section C 20 Total 70 This question paper consists of 18 printed pages and 2 blank pages [Turn over Geylang Methodist School (Secondary) End-of-Year Examination 2025

2 GMS(S)/LSS2G3/EOY/2025 Section A 1 Which of the following are non-contact forces? I Frictional force II Normal reaction III Gravitational force IV Magnetic force A I and II only B I and III only C II and III only D III and IV only 2 A rock on the Moon has a mass of 3.0 kg. It is brought back to the Earth where the gravitational field strength is stronger. What is true about its mass and weight on the Earth? mass weight A less same B less less C same same D same more 3 A rectangular block of dimensions 0.5 m by 0.1 m by 0.2 m is placed on a wooden plank of dimensions 1.2 m by 1.0 m. The block has a weight of 26 N. What is the pressure exerted by the block on the wooden plank? A 21.7 Pa B 52 Pa C 520 Pa D 2600 Pa

3 GMS(S)/LSS2G3/EOY/2025 4 A pump is used to push air into a balloon. What is the work done if a force of 12.0 N is applied to push the handle of the pump by a distance of 15 cm in order to cause air in the cylinder to move into the balloon? A 0.8 J B 1.8 J C 80 J D 180 J 5 A ball is dropped from a height as shown. Ignoring the effects of air resistance, the total energy is ……………………… A greatest at point 1. B greatest at point 2. C greatest at point 3. D the same at all points.

4 GMS(S)/LSS2G3/EOY/2025 6 The diagram below shows the boiling of pure water at the top of a test tube. The ice cubes do not melt even when water boils at the top. Which of the following statements best explains this observation? A Conduction can only take place at the surface of boiling water. B Heat energy is lost to the surroundings when boiling takes place. C Water cannot conduct heat fast enough to the bottom of the test tube. D Water contains impurities which affect its boiling point. 7 The diagram below shows two different bimetallic strips 1 and 2, made of metals X, Y and Z, being heated to the same temperature. From the results shown above, arrange the rate of expansion of the three different metals in increasing order. A X, Y, Z B X, Z, Y C Y, Z, X D Z, X, Y 8 What is the purpose of leaving small gaps in between slabs of concrete on sidewalks? A It is to allow for contraction of the concrete. B It is to allow the expansion of the concrete. C It is to provide connection between slabs. D It is to replace the slabs.

5 GMS(S)/LSS2G3/EOY/2025 9 The figure below shows four different types of indicators, A, B, C and D, with their respective colour changes across a pH scale of 1 to 14. Which of the following indicators, A, B, C or D, would not be able to differentiate between pure water and nitric acid? 10 Ray wants to use an indicator to differentiate between solution X of pH 2 and solution Y of pH 5. Which of the following indicators can he use? indicator pH at which colour change occurs colour in low pH colour in high pH A 1 red brown B 3 yellow red C 7 red yellow D 10 colourless pink 11 What important role do decomposers play in ecosystems? A to break down the dead remains of plants and animals for animals to eat B to break down the dead remains of plants and animals which are returned to the environment C to cause the plants and animals in a food chain to die D to recycle the nutrients back into the soil for plants to use A B C D blue red red yellow colourless red colourless blue 4 3 9 6

6 GMS(S)/LSS2G3/EOY/2025 12 Fig. 12.1 shows a Rafflesia plant. The Rafflesia plant grows on plant vines. It takes water and nutrients from the vines but does nothing to help the vines live. Fig. 12.1 Rafflesia is a ………………… A decomposer B parasite C predator D scavenger 13 The current passing through an electrical component is ……………………………. A the energy required to move a unit charge across the circuit. B the energy required to move a unit charge across the component. C the rate of flow of charge through the component. D the rate of flow of energy through the component. 14 The circuit shows how four resistors are connected in a circuit. Which of the following choices shows the correct pair of resistors that has the same current or potential difference across it? same amount of current flowing through same potential difference across A X and Y X and Y B X and Y W and Z C W and Z X and Y D W and Z W and Z

7 GMS(S)/LSS2G3/EOY/2025 15 Three identical resistors are used in four different electric circuits. Which electric circuit has the lowest total resistance? A B C D 16 The table shows the protein, fat and carbohydrate contents in 10 g of rice and white fish. food protein / g fat / g carbohydrate / g rice 0.6 0.1 8.7 white fish 3.6 0.005 0.0 What would be the main end products of digestion of a meal of rice and white fish? A amino acids and glycerol B amino acids and simple sugars C fatty acids and simple sugars D simple sugars and glycerol

8 GMS(S)/LSS2G3/EOY/2025 17 The diagram shows parts of the human digestive system. Which of the following statements is correct? A Emulsification of fats occurs at 1. B Digestion of starch begins and completes at 2. C Chemical digestion of proteins begins at 3. D Absorption of digested food occurs at 4. 18 The diagram shows ways in which molecules, represented by the dots, may move into and out of a leaf cell. Which of these demonstrates the diffusion of carbon dioxide molecules and oxygen molecules into or out of leaf cells during the day? carbon dioxide molecules oxygen molecules A 1 2 B 1 4 C 4 3 D 4 1 1 2 3 4 leaf cell

9 GMS(S)/LSS2G3/EOY/2025 19 The diagram shows a simplified model of the human circulatory system. Which row best describes the oxygen levels of the blood in the sites labelled 1 to 4? 1 2 3 4 A high high low low B high low high low C low low high high D low high high low 20 The diagram shows three types of blood vessels, 1, 2 and 3. The diagrams are not drawn to scale. 1 2 3 Which row correctly describes the feature of each blood vessel? has the largest lumen has thick muscular wall has a wall that is one cell thick