1 Do Not Turn This Page Until You Are Told To Do So 霹雳怡保培南独立中学 SM POI LAM (SUWA) IPOH FINAL EXAMINATION 2023 GENERAL SCIENCE Date: 30.10.2023 Time: 1340 – 1540 (2 hours) NAME：_______________________ REG NO: ______________ CLASS: J1 YI / LI / AI/ XIN / HE / PIN READ THESE INSTRUCTIONS FIRST 1. This paper is divided into Section A, Section B and Section C. 2. Section A consists of 30 multiple choice questions (30marks). Answer ALL questions. 3. For each question in Section A, there are four possible answers A, B, C and D. Choose the one you consider correct and record at the O sheet paper provided. 4. Section B consists of 13 structured questions (50 marks). Answer ALL questions and write your answers in the space provided. The number of marks is given in the brackets [ ] at the end of each question or part question. 5. Section C consists of 6 free response questions (20 marks). Answer ALL questions and write your answers in the space provided. The number of marks is given in the brackets [ ] at the end of each question or part question. This paper consists of 16 printed pages. Prepared by： ……………… (MS. NITHIYAKAMALAM ) Checked by： ……………… (MR. LOKE WAI CHUAN)
2 Section A: Multiple Choice Questions (30m) 1. In which part of the cell does the energy being released from food? A. Mitochondria C. Cell sap B. Cytoplasm D. Chloroplast 2. Which of the following is false about red blood cell? A. is red in colour C. have nucleus B. contains haemoglobin D. cannot be found in plants 3. What is the use of sap vacuole in plants cell? A. carry out photosynthesis C. controls what goes in and out B. contain sugary solution D. contain cellulose 4. The diagram below shows a cell that has tiny threads along one edge. Diagram 1 Which part belongs to the cell above? A. Axon C. Dendrite B. Cilia D. Root hair cell 5. What process turns gas to liquid? A. Boiling C. Sublimation B. Evaporation D. Condensation
3 6. The diagram below shows a _______________________. Diagram 2 A. Carbon cycle C. Nitrogen cycle B. Water cycle D. Water pollution 7. Which of the followings are matters? I) Heat II) Vacuum III) Metals IV) Soil A. I and II C. III and IV B. II and III D. I and IV 8. What is the name of compound made from calcium, sulfur and oxygen? A. calcium sulfate C. sulfur calcide B. calcium sulfide D. sulfur oxygenate 9. What is the force of gravity on an object is called? A. Weight C. Contact force B. Mass D. Height
4 10. Which of the following is not a planet in the solar system? A. Mercury C. Neptune B. Earth D. Pluto 11. What causes the land to change in height through the day? A. Tidal range C. Moon tide B. Tidal force D. Earth tide 12. Which of the following is store energy? I. Chemical II. Sound III. Elastic potential IV. Light A. I and II C. I and III B. II and III D. III and IV 13. Which part of the virus made of little threads that contain coded instructions to make more virus? A. Protein C. Cilia B. RNA D. Red blood cell 14. Diagram 3 The diagram above shows a hybrid of grizzly bear and polar bear. What is the name of it? A. Grolar C. Liger B. Beefalo D. Mule
5 15. What is the key used by Scientist to identify and classify organism? A. Dichotomous key C. Vertical key B. Variation key D. Horizontal key 16. What elements are the symbols Na and Mg represent? A. Sulfur and Potassium C. Sodium and Magnesium B. Beryllium and Aluminium D. Silicon and Phosphorus 17. Which of the following is not a property of metal? A. strong C. brittle B. ductile D. conduct heat 18. Diagram 4 Diagram 4 shows a gas used in hospitals to overcome breathing difficulties. What gas is that? A. N2 C. CO2 B. H2 D. O2 19. Which of the following is an alkali? A. Potassium hydroxide C. Nitric acid B. Hydrochloric acid D. Sulphuric acid
6 20. The diagram below shows a food that contains acid. What type of acid it has? Diagram 5 A. Hydrofluoric acid C. Carbonic acid B. Citric acid D. Chloric acid 21. Which hazard warning label is shown below? A. Oxidising C. Toxic B. Explosive D. Flammable 22. Which of the following is not a pH indicator? A. Universal indicator C. Litmus paper B. Temperature D. Red cabbage 23. Sound is a type of energy produced by___________________. A. photons C. vibration B. electrons D. solar system
7 24. Which of the following is not a part of the Earth? A. Core C. Milky way galaxy B. Mantle D. Crust 25. What the places where tectonic plates meet are called? A. Eurasian plate C. Pacific plate B. Plate meeting centre D. Plate boundaries 26. The diagram below shows a type of microorganism’s powder being used to make bread. Diagram 6 Which microorganism is this? A. Protozoa C. Mushroom B. Yeast D. Toadstool
8 27. The food chain below shows energy is being passed from one organism to another. Choose the correct organism for the empty box provided. A. cat C. snake B. cockroach D. cricket 28. Which equipment is a graduated glass tube used for neutralisation process? A. Wooden splint C. Burette B. Titration D. Hydrochloric acid 29. Which of the followings are the examples of chemical changes? I. Formation of iron sulfide II. Ice melting III. Water changes to water vapour IV. Burning of wood A. I and II C. III and IV B. II and III D. I and IV 30. Antacid is a medicine to treat _________________. A. indigestion C. cancer B. brain tumor D. arthritis
9 Section B: Structured Questions (50m) Answer all the questions in the space provided on the Question Paper 1. Living organisms have seven characteristics to survive. Describe the following characteristics. {2m} (a) Sensitivity : _____________________________________________________________________ (b) Excretion : ______________________________________________________________________ 2. (a) Which two elements are combined to form calcium chloride? {2m} ______________________________________________________________________________ (b) Which three elements are combined to form magnesium carbonate? {3m} ______________________________________________________________________________ (c) Name the compound which has the formula of KOH {2m} ______________________________________________________________________________ (d) What is the name for a compound made of sodium, sulfur and oxygen? {2m} ______________________________________________________________________________ (e) What is the chemical formula for water? {1m} ______________________________________________________________________________ 3. What is a contact force? {2m} _________________________________________________________________________________ 4. List four properties of non-metals. {4m} _________________________________________________________________________________
10 5. (a) Define alloys. {2m} _______________________________________________________________________________ (b) State the mixtures of the alloys below. {4m} i) BRONZE : ___________________________ + ___________________________ ii) STEEL : ___________________________ + ___________________________ (c) What is the name of alloy used in aeroplanes by mixing magnesium and copper? {2m} _______________________________________________________________________________ 6. Which apparatus is used to separate food dye and water? {2m} _______________________________________________________________________________ 7. Differentiate acid and alkali with their properties by choosing the options given below. {6m} have bitter taste pH less than 7 ex : sodium hydroxide found in vinegar sour and tangy taste pH more than 7
11 8. Fill in the blank boxes with the right type of substances / colour of universal indicator. {5m} 9. In sound, loudness depends on _______________________ of sound wave and pitch depends on ________________________ of the wave. {2m} 10. Draw solar eclipse diagram and label the sun, earth and moon. {2m} 11. In a food chain, what is meant by: {2m} (a) Producer : _____________________________________________________________________ (b) Carnivore :_____________________________________________________________________
12 12. Complete these word equations. {2m} (a) zinc + sulfuric acid → _______________________ + hydrogen (b) magnesium + ______________________________ → magnesium chloride + hydrogen 13. (a) What gas is given off when an acid is added to a metal by producing bubbles? {1m} ______________________________________________________________________________ (b) How to test for this gas? {2m} ______________________________________________________________________________ ______________________________________________________________________________
13 Section C: Free Response Questions (20m) Answer all the questions in the space provided on the Question Paper Diagram 1 below shows how Rina keeps her mouth clean twice a day. Diagram 1 1. Explain how toothpaste is helpful in neutralising the acid in her mouth. {5m} _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________
14 Braden pours 25 cm3 of hydrochloric acid into each of three beakers. He puts a few drops of Universal Indicator (UI) into each of the beakers and add the indigestion powder spatula by spatula until the UI turns green (neutralised). This experiment was carried out with three powders P, Q and R. The number of spatulas used was recorded later. The table below shows his results. Powder Number of spatula used to neutralise the acid P 14 Q 8 R 30 2. (a) What is being changed in this investigation? {1m} ________________________________________________________________________________ (b) What is being kept the same? {1m} ________________________________________________________________________________ (c) Which is the least effective powder? {1m} ________________________________________________________________________________ (d) Which is the most effective powder? {1m} ________________________________________________________________________________
15 3. Do you think there is enough evidence to be certain of your answers to question 1.(d)? State the reason. {2m} _________________________________________________________________________________ _________________________________________________________________________________ Braden repeated his investigation two more times for more effective outcomes. The table shows all of his results. Powder Number of spatula used to neutralise the acid 1 st try 2 nd try 3 rd try Mean X 12 13 14 13 Y 8 20 18 15 Z 32 30 31 31 4. Now which powder do you think is the most effective one? {1m} _________________________________________________________________________________ 5. (a) Which result looks wrong? {1m} _________________________________________________________________________________ (b) Suggest two possibilities of why Braden got this wrong result. {2m} _________________________________________________________________________________ _________________________________________________________________________________
16 6. Janel loves eating fruits. She bought an apple from the store and kept it on the dining table. Unfortunately, she forgot about it and realised only after a 4 days. a) Name the process that you think the apple would have undergone? (2m) ______________________________________________________________________________ b) In which three conditions do micro-organisms can decay faster? (3m) i) ____________________________________________________________________________ ii) ___________________________________________________________________________ iii) ___________________________________________________________________________
