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 2021 GENERAL SCIENCE Date: 17th November 2021 Time: 1345 – 1545 (2 hours) NAME：_______________________ REG NO: ______________ CLASS: J2HE/ J2REN/J2PIN 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 (30 marks). Answer ALL questions. You may use calculator. 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 9 structure questions (40 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 4 free response question (30 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 15 printed pages. Prepared by： ……Nithiya………… (MS. S.NITHIYAKAMALAM) Checked by： ……………… (MR. LOKE WAI CHUAN)
2 1. Plants carry out photosynthesis under certain conditions. Which of the following statement is incorrect about those conditions? A. It happens in the presence of anthocyanin that is the green pigment stored in chloroplast B. Water is absorbed by roots and transported to the leaves through xylem vessels C. Carbon dioxide gas enters the leaves through stomata D. Happens in the presence of sunlight. 2. The diagram above shows the positions of phloem and xylem vessels in a _______________. A. stem C. leaf B. Root D. node 3. What is the effect of Vitamin A deficiency? A. Rickets C. Beri-beri B. Scurvy D. Night blindness 4. The salivary glands secrete saliva that contains the enzyme ________________ which break down the complex carbohydrate. A. pepsin C. protease B. amylase D. lipase 5. The blood vessel that carries oxygenated blood from the lungs to the left atrium is the_________. A. pulmonary artery C. vena cava B. pulmonary vein D. aorta
3 6. What does the above diagram show? A. the different shapes of WBC C. the platelets in the blood B. the oxyhaemoglobin in RBC D. the nucleus in the blood plasma 7. Before entering air-sacs, the air must enter this part first. The part is ________________. A. a bile C. an alveolus B. a bronchiole D. a blood capillary 8. The organ X is probably the A. Bronchus C. Trachea B. Nasal cavity D. Alveoli 9. Which of the following statements about changes in males during puberty is incorrect? A. A boy is ready to be a father C. Hair starts to grow at pubic region B. Ejaculation occurs D. Reproductive organs begin to ovulate 10. Which statement describes ovulation correctly? A. The unfertilised egg disintegrates C. Mature ovum is attached to uterus B. Fertilised ovum moves along the oviduct D. Mature ovum is released into oviduct Organ X : - Connects the nostrils to the lungs - consists of hard cartilaginous bones
4 11. What are the control and prevention methods for syphilis and gonorrhoea? I. Avoid multiple sex partners II. Avoid sharing razors, toothbrushes III. Use condom IV. Share injection needles A. I, II C. III, IV B. II. III D. I, IV 12. Which of the following will not happen to liquid when they are heated? A. Particles have more movement B. Heat energy continues to transfer to liquid particles C. The attractive forces between particles become stronger D. It escapes to the air as gas particles 13. Which of the following actions does not increase the air pressure in a container? A. Heating the gas B. Reducing the kinetic energy of the gas particles C. Reducing the volume of the container D. Pumping a high volume of gas into the cylinder 14. Based on the classification above, what are the possible examples of P and Q? A. P : Mercury , Q: Copper C. P : Gold , Q: Oxygen B. P : Sand , Q: Petrol D. P : Oxygen , Q: Silver
5 15. What are the components in the compound salt? A. Sodium, carbon C. Sodium, chlorine B. Hydrogen, chlorine D. Hydrogen, carbon 16. Which alloy is made by mixing copper and tin? A. Bronze C. Steel B. Brass D. Iron 17. What is said to be the measure of how much a solute will dissolve in a solvent? A. Unsaturated solution C. Solution B. Saturated solution D. Solubility 18. Which of the following is a physical change? A. Condensation C. Photosynthesis B. Digestion D. Respiration 19. Burning accompanied by the generation of _________ and _________ in the form of flame. A. heat, force C. heat , light B. heat, nuclear D. force , light 20. An insoluble solid is formed when you react silver nitrate with calcium chloride. What is that called? A. Carbon dioxide C. Calcium hydroxide B. Precipitate D. Solute 21. An athlete completes a 700 meter run in just 1 minute. What is the athlete’s speed? A. 700 m/s C. 11.67 m/s B. 14 m/s D. 12.37 m/s
6 22. What pattern of motion is shown by the diagram above? A. constant acceleration C. speeding up B. constant motion D. slowing down 23. . The graph above describes about ___________________. A. deceleration (slowing down) C. acceleration (slowing down) B. acceleration (speeding up) D. constant 24. Vibrating objects produce sound in the form of waves. What the number of vibrations per second is called? A. Loudness C. Amplitude B. Pitch D. Frequency 25. Which part of the ear would vibrate and transmit sound waves to the ossicles? A. Pinna C. Cochlea B. Ear canal D. Eardrum
7 26. Objects that allow light to pass through fully are called _________________ objects. A. opaque C. transparent B. blurred D. translucent 27. Which of the following is a luminous object? A. Moon C. Stained glass windows B. Candle D. Pen 28. The diagram above shows coloured lights are added to make other colours. What colour is X? A. Maroon C. Orange B. White D. Black 29. Which method is used to magnetise a piece of unmagnetised iron? A. Stroking C. Dissolving B. Drying D. Rusting 30. What instrument is used to measure electric current? A. electromagnet C. diameter B. compass D. ammeter
8 Section B: Structured Questions (40m) Answer all the questions in the space provided on the Question Paper 1. Food is a basic need for all living organisms because it provides energy and build new cells in the body. (a) What is a balanced diet? (2m) ______________________________________________________________________________ ______________________________________________________________________________ (b) State two parts of human body where enzyme amylase is produced? (2m) i)________________________________ ii) ___________________________________ 2. The diagram below shows the blood vessels of the body. Diagram 1 What are the three main blood vessels in the body? (3m) _________________________________________________________________________________ 3. Explain why air pressure decreases as altitude increases. (3m) _________________________________________________________________________________ _________________________________________________________________________________ _________________________________________________________________________________
9 4. Write down the differences between compounds and mixtures by filling up the table below. {6m} Compounds Mixtures First Difference Second Difference Third Difference 5. Based on the separating techniques of mixtures, mark (√) for the correct match and (X) for the wrong match. (4m) (a) Chromatography: Separate oil from water (b) Using a magnet: Separate iron and sulfur (c) Filtration: Separate sand and water (d) Evaporation: Separate soil from water 6. The diagram below shows a set-up of separating water from a mixture of red food dye and water. Diagram 2
10 Based on the technique above, fill in the blanks with the right answers (4m) i) The mixture of food dye and water can be separated using an apparatus called a ____________________. It is usually used to separate mixtures of two _________________. The mixture of red dye and water is heated and ________________. The liquid water changes to ___________________. It travels along the tube into the apparatus. 7. Metals and metal carbonates will react with various types of acid to produce certain products. (a) Complete the following word equations. (6m) i) Magnesium + _____________________ → magnesium chloride + ___________________ ii) ________________________ + nitric acid → zinc nitrate + ______________ + carbon dioxide iii) Sodium carbonate + ____________________→ sodium sulfate + ___________________+ water (b) State the two ways of testing carbon dioxide gas. (2m) i)______________________________________________________________________________ ii)______________________________________________________________________________ c) What are the two compulsory substances required for rusting of iron to take place? (2m) i)_____________________________ ii)____________________________________
11 8. The diagram below shows a star seems to be further than its actual position. Diagram 3 What phenomena is this? (2m) _________________________________________________________________________________ 9. Sound needs a material to travel through. The sound travels when particles push each other back and forth. (a) In what medium sound travels the fastest and why? (2m) ______________________________________________________________________________ (b) What type of medium cannot transfer sound? (1m) ______________________________________________________________________________ (c) During thunderstorm, we can see the lightning earlier than the thunder. Why? (1m) ______________________________________________________________________________
12 Section C: Free Response Questions (30m) Answer all the questions in the space provided on the Question Paper 1. Diagram 1 shows two sets of apparatus labelled M and N in an experiment. Diagram 1 (a) What are the variables of the experiment? (3m) i) Constant variable: ______________________________________________________________ ii) Manipulated variable: ___________________________________________________________ iii) Responsive variable: ___________________________________________________________ (b) Which mouse survives longer? (1m) _______________________________________________________________________________ (c) Explain your answer in (b) (2m) _______________________________________________________________________________
13 (d) Name the two processes that take place in set M? (2m) _______________________________________________________________________________ (e) State two conclusions that can be drawn from this experiment. (2m) i) _____________________________________________________________________________ ii) _____________________________________________________________________________ 2. List five changes that girls go through during puberty. (5m) 1.________________________________________________________________________________ 2.________________________________________________________________________________ 3.________________________________________________________________________________ 4.________________________________________________________________________________ 5.________________________________________________________________________________ 3. The diagram below shows the process of preparing a sugar solution. Diagram 2
14 (a) What is the term used to replace: (2m) i) Sugar cube : ____________________ ii) Water : ___________________ (b) When sugar dissolves in water, the water is called a __________________________. (1m) (c) Give three suggestions on how to improve the solubility of sugar. (3m) ______________________________________________________________________________ ______________________________________________________________________________ (d) A solution which can not dissove further amount of solute at a particular temperature is called a ________________________________. (1m) 4. Based on your knowledge in magnets and elecromagnetism, answer the following questions. (a) What are the two magnet rules? (2m) ______________________________________________________________________________ ______________________________________________________________________________ (b) Draw the magnetic field lines for the pole bar given below to represant a magnetic field. (2m) (c) A student is trying to find the direction of the magnetic field produced by a current in a straight wire. Circle the correct method. (1m)
15 (d) List three indications that tell you a chemical reaction has taken place? (3m) ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________
