5116 Prelim P1 Fuhua 09

Class

Register Number

Candidate Name ____________________________________ FUHUA SECONDARY SCHOOL Secondary Four Express / Five Normal Academic Preliminary Examination 2009 Fuhua Secondary Fuhua Secondary Fuhua Secondary Fuhua Secondary Fuhua Secondary Fuhua Secondary Fuhua Secondary Fuhua Secondary Fuhua Secondary Fuhua Secondary Fuhua Secondary Fuhua Secondary Fuhua Secondary Fuhua Secondary Fuhua Secondary Fuhua Secondary Fuhua Secondary Fuhua Secondary Fuhua Secondary Fuhua Secondary Fuhua Secondary

Science (PHYSICS/CHEMISTRY) 5116/1 PAPER 1 Multiple Choice Additional Materials: Mutiple Choice answer sheet Soft clean eraser Soft pencil (type B or HB is recommended) Electronic calculator

DATE

22 September 2009

TIME

0750 h - 0850 h

DURATION

1 hour

INSTRUCTIONS TO CANDIDATES Do not open this booklet until you are told to do so. Write your name, class and register number at the top of this page and on the Multiple Choice answer sheet. There are forty questions in this paper. Answer all questions. For each question, there are four possible answers, A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate answer sheet. Read very carefully the instructions on the answer sheet.

INFORMATION FOR CANDIDATES Take g = 10 N/kg, unless otherwise stated. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. PARENT'S SIGNATURE

FOR EXAMINER'S USE

Setters

Mr Sreenivasan (Phy) / Mr Tan Boon Hwee Sci (Chem)

40

Class Standard

Highest Mark:

Lowest Mark:

Average Mark:

This Question Paper consists of 12 pages

1. What is the reading shown on the micrometer screw gauge in figure 1.1 below. 25

0

20

Fig 1.1 A. 2.22 mm

B. 2.72 mm

C. 5.72 cm

D. 5.22 mm

2. An object free falls from rest from a certain height for 3 seconds before it hits the ground with a speed of 30 m/s. If air resistance can be neglected, what is the height from which the object fell to the ground? (Gravitational acceleration is 10 m/s2) A. 90 m

B. 30 m

C. 45 m

D. 10 m

3. A force of 40 N is applied on a 2 kg trolley on wheels. The acceleration was found to be 15 m/s2. What is the opposing force acting on the trolley? A. 7.5 N

B. 10 N

C. 30 N

D. 40 N

4. The position of the centre of gravity of a double decker bus shown in figure 4.1 shifts, left or right when there are an uneven number of passengers sitting on one side of the bus, or up or down if the uneven distribution is between the lower or upper deck. D

C B A

Fig 4.1 What is the position of the centre of gravity for which the double decker bus above will topple?

2

5. Figure 5.1 below shows a hydraulic device that transmits pressure exerted at Piston A to Piston B as liquid is incompressible. Piston A has an area of 0.05 m2 and Piston B is 0.25 m2. What is the force exerted at piston B given that pressure exerted at A is the same as pressure exerted at B? 20 N

F?

0.05 m2

0.25 m2

Fig 5.1 A. 100 N

B.20 N

C. 15 N

D. 5 N

6. During boiling of water, a change of state occurs and temperature remains constant. What happens to the heat energy supplied during boiling? A. Lost to the surroundings B. Absorbed to do work to break intermolecular forces and push back the atmosphere. C. Absorbed to do work to make intermolecular forces. D. Absorbed to increase the average kinetic energy of the molecules. 7. The heating element in an electric kettle transfers its heat to the water via which process/es? A. Convection B. Conduction and Convection

C. Radiation and conduction D. Conduction

8. Good conductors of electricity are good conductors of heat because A. the molecules are closer together in conductors. B. molecules vibrate more in conductors. C. atoms and molecules can move quickly from one end of a conductor to another end. D. ‘free electrons’ can transmit energy quickly from one end of a conductor to another.

3

9. Three metal containers are filled with water. The first is painted shiny black the second polished silver and the last dull black. All are placed out in the sun. After several hours the temperature of the water in the three containers was measured.

Shiny Black

Polished bare metal

Dull black

What will be the order from lowest temperature to highest temperature of the water? A. B. C. D.

Polished surface, Shiny black, Dull black. Shiny Black, Polished surface, Dull black. Dull Black, Shiny Black, Polished surface. Polished surface, Dull Black, Shiny surface.

10. A person ran 5 km during which he generated a lot of body heat. As a result, his body temperature went up and he started to perspire and continued to do so even after he stopped running until his body cooled down. Which of the following correctly explains how his body cooled down after he stopped running? A. The water molecules in the sweat absorbed heat energy from his body and gained sufficient energy to escape into the atmosphere. B. His body radiated heat away to the surroundings. C. The air cooled him down due to convection currents set up above his head D. The sweat was cooler than his body and therefore heat flowed from his body which was at higher temperature to the sweat which was at a lower temperature.

11. Figure 11.1 shows an optical pin, P, placed in front of a plane mirror. If the pin is viewed from the left as shown, where is the image of the pin seen? A

B

C

D

P Fig 11.1

4

12. Figure 12.1 below shows person A clapping two pieces of wood. Person B hears the sound after 0.6 seconds and the echo after 1.8 seconds. How far away is the wall from person A? wall A

?m

A. 200 m

B

200 m Fig 12.1 B. 333 m

C. 400 m

D 600 m

13. A sound wave passes by a given point in air. Which of the following accurately describe how the air molecules will vibrate? A. B. C. D.

Oscillate up and down. Oscillate perpendicular to the direction of the wave motion. Remain stationary. Oscillate parallel to the direction of the wave motion.

14. A radio station transmits at 55 MHz. If the speed of radio waves is 3 x 108 m/s, what is the wavelength of the waves broadcast by the station? A. 0.2 m

B. 0.5 m

C. 2.0 m

D. 5.5 m

15. A wire of cross-sectional area, A, and length, L, has a resistance of 2 Ω.What would be the resistance of a wire of the same type and same length but crosssectional area 2A. A.1 Ω

B. 2 Ω

C4Ω

D. 8 Ω

16. A person uses a 2 kW heater for 2 hours and a 500W motor for 3 hours. What is the total approximate cost of the electrical energy used if its cost is $0.05 per unit? A. $0.020

B. $0.28

C. $0.63

D. $0.95

17. Connected to a 1 kW electric iron is a three-pin plug. It is used with a 240 V power supply. Which of the following is not correct? A. B. C. D.

A 13 A fuse is the most suitable rating for this appliance. The yellow and green wire should be connected to the earth pin. The live wire is the brown wire. The fuse should be connected to the live lead. 5

18. Figure 18.1 below shows a steel needle attracted by a magnet. If another weak magnet X is brought near the further end of the needle as shown, what will happen to the needle next?

N X N

S

Fig 18.1 A. It bends away from the magnet. B. It bends towards X.

C. It falls to the ground. D. It stays still.

19. A magnetised steel bar is placed in a solenoid with alternating current flowing through it and then pulled out slowly from the solenoid. What will happen to the steel bar? A. B. C. D.

Nothing as it will lose its magnetism only when current is switched off. It will be magnetised further and become stronger. It will function as an electromagnet. It will lose its magnetism.

20. A compass needle is placed below a wire carrying a current. Which of the diagrams labelled A to D below shows the correct deflection of a compass needle as a result of the magnetic effect of the current? Compass needle A. N Current direction Wire

B.

S N

Compass needle

S

Compass needle Current direction N

Current direction

Wire

C. Wire

S

D. Wire

N

S

Compass needle Current direction

6

21. Gas X can be collected using the apparatus shown below.

Which of the following gases can be collected? A. B. C. D.

Hydrogen Methane Carbon dioxide Helium

22. The atoms 37Cl and 35Cl have A. B. C. D.

different number of neutrons. different number of protons. different number of electrons. same nucleon number.

23. Which group of substances contains an element, a compound and a mixture? A. B. C. D.

Argon, carbon dioxide and zinc Hydrogen, air and steel Oxygen, water and steel Gold, silver and water

24. The diagram shows the positions of four elements in the Periodic Table. I

II

III

IV X

V

VI Y

VII

0 Z

W

Which two elements form a covalent compound? A. B. C. D.

W and X W and Z X and Y X and Z

7

25. Ionic bonds are formed between A. B. C. D.

atoms of two metals. atoms of a metal and a non-metal. atoms of two non-metals. atoms which share electrons.

26. The oxide of an element Z has the following properties: 1. It reacts with dilute hydrochloric acid to produce a salt and water only. 2. It reacts with dilute sodium hydroxide to produce a salt and water only. 3. It has a high melting point. What is element Z? A. B. C. D.

Copper Iron Sodium Zinc

27. A sample of polluted air is bubbled into dilute sodium hydroxide. The pH of the solution is decreased from 13 to 11. Which gas causes this change? A. B. C. D.

Ammonia Carbon monoxide Nitrogen Sulfur dioxide

28. Sodium is in Group I of the Periodic Table. Which of the following are properties of sodium chloride?

A. B. C. D.

Chemical formula NaCl NaCl NaCl2 NaCl2

Conduct electricity Molten Solid Molten Solid

Solubility in water Soluble Insoluble Soluble Insoluble

29. Which metal can be extracted by heating the ore containing its oxide with carbon? A. B. C. D.

calcium iron magnesium potassium

8

30. A thermometer is placed in a beaker containing an aqueous solution of an alkali. The temperature is as shown in the figure below.

o

C

30 28 26 24

When an acid is added to the alkali, an exothermic reaction takes place. The temperature changes by 9.5 oC. What is the final temperature? A. B. C. D.

17.0 oC 17.5 oC 36.0 oC 36.5 oC

31. What is the chemical formula of vanadium(III) oxide? A. B. C. D.

VO VO2 V2O3 V2O5

32. Ethane burns in excess oxygen as shown in the equation: 2C2H6(g) + O2(g)
4CO2(g) + 6H2O(l) 100 cm3 of ethane gas, C2H6, is burnt in excess oxygen at room temperature and pressure. What is the volume of the gaseous product obtained? A. B. C. D.

100 cm3 200 cm3 300 cm3 500 cm3

9

33. An experiment was carried out to measure the rate of mass loss of reactants over time when a fixed mass of zinc carbonate was heated strongly. ZnCO3(s)
ZnO(s) + CO2(g) What is the maximum volume of carbon dioxide gas at r.t.p that can be produced when 12.5 g of zinc carbonate is heated strongly? A. B. C. D.

2.40 dm3 4.80 dm3 24.0 dm3 48.0 dm3

34. Compound Z undergoes the following reactions. Solid Z Add water Solution of Z Add dilute NaOH Dirty green precipitate

Add dilute HNO3, then Ba(NO3)2 White precipitate

What is compound Z? A. B. C. D.

Iron(II) sulfate Copper(II) sulfate Iron(II) chloride Copper(II) chloride

35. Which sets of gases contains a pollutant and a greenhouse gas? A. B. C. D.

Carbon monoxide and sulfur dioxide Carbon dioxide and water vapour Nitrogen dioxide and sulfur dioxide Methane gas and carbon dioxide

10

36. When crude oil is distilled, the useful fractions in the crude oil are obtained. What is the correct order of their boiling points?

A. B. C. D.

Lowest boiling point Diesel Paraffin Paraffin Petrol Petrol Paraffin Petrol Diesel

Highest boiling point Petrol Lubricating oil Lubricating oil Diesel Diesel Lubricating oil Lubricating oil Paraffin

37. Which statement about the homologous series of alkenes is not true? A. B. C. D.

They are all saturated compounds. They can be represented by the general formula, CnH2n. The flammability decreases down the homologous series. They have the same empirical formula.

38. What product is formed when steam reacts with an alkene? A. B. C. D.

An alcohol An alkane An organic acid A polymer

39. Which molecule will cause acidified potassium dichromate(VI) to change from orange to green?

A.

B.

H

H

H

O

C

C

H H

H

C

C

D.

H

H

O

H

H

H

C.

O

H

H

C

C

H

H

H

H

C

C

H

H

H

11

40. The diagram shows the structure of a polymer used for making soft drink bottles. H

H

H

H

H

H

C

C

C

C

C

C

H H

C

H H H

C

H H H

C

H

H

H

H

What is the monomer?

A.

H

H

C

C

H H

H H

C

C

H H

C

B. H

H H H

C.

D.

H

C

H H

C

C

H H

C

H

H H

C

C

H H C

H

H H

H

12