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1 Which of the following is a derived quantity?

A Time B Mass C Force D Length

2 Which value is the same as 2.0 microwatt?

A 2.0 x 10-3watt B 2.0 x10-6watt C 2.0 x 10-9watt D 2.0 x 10-12watt

3 Which diagram shows a consistent but not accurate result of dart throwing?

A C

B D

4 Which of the followings is true about kinetic energy?

A Measured in J s-1 unit

B Exists in moving objects

C Related to position of the object

D If the mass of the object increases, the kinetic energy decreases


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5 What is the amount of energy needed to lift a bicycle of 18 kg from the ground to a

height of 3 m?

[ Potential energy = mgh; Gravitational acceleration = 10 ms -2];

A 31 J B 60 J C 540 J D 600 J

6 Diagram 1 shows a 0.5 kg ball with 5 J of potential energy placed on a block.

Diagram 1

What is the height of the block?

[Potential energy = mgh, g = 10 ms -2]

A 1.0 m B 5.0 m C 20.0 m D 25.0 m

7 Diagram 2 shows a complete circuit.

Diagram 2

What is the amount of charge flowing through the bulb for 80 seconds?

[Charge quantity, Q = It ]

A 18 C B 240 C C 480 C D 1440 C

8. What is the energy change which takes place in a solar cell?

A Solar energy Heat energy C Solar energy Electricalenergy

B Solar energy Chemical energy D Solar energy Kinetic energy


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9. What is the special name for the elements in Group 18 in the Periodic Table?

A Halogen C Alkali metal

B Noble gas D Alkaline Earth metal

10 Table 1 shows the electron configuration of elements, P, Q, R and S.

Element P Q R S

Electron configuration 2.1 2.8 2.4 2.6

Table 1

Which pair of elements can form a covalent bond?

A P and Q B P and R C Q and S D R and S

11 Diagram 3 shows the formation of magnesium oxide.

Diagram 3

Which of the following is correct?

A Oxygen atom gained two electrons

B Oxygen atom lost two electrons

C Magnesium atom lost one electron

D Magnesium atom and oxygen atom shared two electrons

12 What is the molar mass of Fe203?

[Given relative atomic mass: Fe= 56, O= 16]

A 72 g mol-1 B 160 g mol-1 C 896 g mol-1 D 5376 g mol-1


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13 Diagram 4 shows an excretory organ..

Diagram 4

Which of the followings is correct about the organ?A Removes urea and carbon dioxide

B Detects excess salt and water

C Oxidises lactic acid

D Secretes sweat

14 Diagram 5 shows a part of the human lymphatic system.

Diagram 5

Z produces lymphocytes.

What is Z?

A Valves C Lymph nodes

B Lymph duct D Blood vessels


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15 Diagram 6 shows an equation of a respiration process

Glucose + Oxygen Carbon dioxide + Energy + Water

Diagram 6

What are the waste products of the process?A Glucose and oxygen C Oxygen, carbon dioxide and water

B Carbon dioxide and water D Glucose, oxygen and carbon dioxide

16 Which disease is related to lungs?

A Fibrosis B Bronchitis C Haemophilia D Hepatitis B

17 Diagram 7 shows a graph of voltage against time for an alternating current.

Diagram 7

What is the period for a complete signal?

A 10s B 20s C 30s D 40s

18 The followings are symptoms of a disease related to digestive system.

Frequent and watery bowel movement.

Fever, nausea and vomitting..

What is the disease?

A Gastritis C Constipation

B Diarrhoea D Appendicitis

19 Which blood group is a universal donor?

A A B B C O D AB

20 Which component of blood carries oxygen in the body?

A Plasma C Red blood cell

B Platelets D White blood cell

21 Which of the followings found in sweat?

A Glycerol B Salt C Sugar D Protein


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22 Which of the followings istrueabout the elements in Group 17 of the Periodic Table?

A All elements are gasesB All elements are stableC All elements have 17 neutrons

D All elements have 7 electrons in the outermost shell

23 .Which of the followings is a property of ionic compounds?

A Weak bondingB Insoluble in waterC High melting pointsD Good electrical insulators

24.Which of the followings is a covalent compound?

A NH3B MgOC NaClD PbBr2

25. Water molecules change their states between liquid and gaseous states

A. only when water vapour is saturatedB. only when the water is boilingC. at all times because evaporation and condensation occur any timeD. only when the vapour molecules produce a pressure the same as the atmospheric pressure

26. Latent heat of fusion involves a

A. change in temperatureB. change in melting pointC. change in state of matter from solid into liquidD. change in state of matter from liquid into gas

27. The specific latent heat of fusion of silver is 1.04 x 105Jkg-1. Calculate the heat required tomelt 3 kg of silver.

(lf=m

Q)

A. 4.08 x 105JB. 3.12 x 105JC. 2.25 x 105JD. 3.42 x 105J


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28. A battery has a potential difference of 14 V. How much electrical energy does the cellprovide if the cell supplies 4 C of charge? (E = QV)

A. 56JB. 58JC. 60JD. 62J

29. The peak voltage output from a transformer is 8 V. What is the value of root mean squarevoltage?(Vrms = V0)

A. 2.0 VB. 5.7 VC. 6.1 VD. 6.3 V

30.Which of the followings are products of anaerobic respiration in human?

A Lactic acid and energyB Lactic acid, carbon dioxide and energyC Carbon dioxide, energy and waterD Ethanol, carbon dioxide and energy

31. Where does the gaseous exchange in a human take place?

A In the blood capillaryB On the surface of the alveolusC On the surface of red blood cellsD Along the trachea, bronchus and bronchioles

32. What is the form of oxygen that is transported from alveolus to all parts of the body throughblood?

A HaemoglobinB OxyhaemoglobinC DeoxyhaemoglobinD Carbaminohaemoglobin


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33 Diagram 8 shows a food chain .

Which organism has the largest population size in the food chain?A BirdB PlantC SnakeD Grasshopper

34 Diagram 9 shows a process which takes place in plants to eliminate excess water.

What is X?A DifussionB RespirationC TranspirationD Condensation

35 Which of the followings is the biotic factor that can affect a balanced ecosystem ?A SoilB GaseousC Moisture

D Microorganisms

36 Which of the followings is the correct sequence of ecological changes that occur in abarren land over a long period of time?

A Colonisation Climax community SuccessionB Succession Colonisation Climax communityC Colonisation Succession Climax communityD Succession Climax community Colonisation

Diagram 8

Diagram 9

Process X


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37 Which of the following steps involve the biodiversity conservation?

I Ways of protecting wildlifeII Saving the natural resourcesIII Keeping the environment clean

IV Using fossil fuel as an energy resourceA I and IIB I and IVC II and IIID III and IV

38 Diagram 9 shows the food web in a tropical rainforest ecosystem.

Which of the following organisms is the tertier consumer?

A Fox

B FrogC SnakeD Grasshopper

Hawk

Fox

Rabbit

Grass

Mouse

Grasshopper

Frog

Snake

Diagram 9


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39 Why is it important to conserve and preserve the ecosystem?

A Provide more jobs for peopleB To get more land for cultivationC Contribute to the extinction of flora and faunaD Ensure the survival of future generations

40 Which of the following activities protect the tropical rain forest ecosystem?

A Illegal huntingB Uncontrolled loggingC Smuggling out endangered speciesD Maintaining forests as natural reserves

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