BECE 2002 (Paper B) Integrated Science Past Questions and Answers

Paper 1: Objectives

1. Which of the following substances is made up of only one kind of atom?
   1. A. Iron
   2. B. Salt
   3. C. Steel
   4. D. Water
   Answer: A
2. Ice is able to float on water because the ice
   1. A. Is colder than water
   2. B. Is denser than water
   3. C. Has a greater mass for the same volume of water
   4. D. Has a greater volume for the same mass of water
   Answer: D
3. Which of the following statements about the state of matter is correct?
   1. A. Molecules in a solid are disorderly arranged
   2. B. Solids are highly compressible
   3. C. Liquids have definite form and volume
   4. D. Molecules in a gas move faster than those in a liquid
   Answer: D
4. 
   
   The above diagram illustrates the structure of an atom.The components labeled X and Y in the atom diagram are respectively
   1. A. Neutrons and shells
   2. B. Ions and neutrons
   3. C. Neutrons and nucleus
   4. D. Nucleus and neutrons
   Answer: D
5. The force which opposes the motion of one object on another object is known as
   1. A. Friction
   2. B. Gravity
   3. C. Tension
   4. D. Weight
   Answer: A
6. When the brakes of a bicycle in motion are applied for a long time, the wheels become hot due to a change of energy from
   1. A. Kinetic energy to potential energy
   2. B. Kinetic energy to heat energy
   3. C. Potential energy to heat energy
   4. D. Potential energy to kinetic energy
   Answer: B
7. A man applied a force of 50 N to push a wheelbarrow through a distance of 6 m. Calculate the work done.
   1. A. 300 J
   2. B. 56 J
   3. C. 44 J
   4. D. 30 J
   Answer: A
8. In which of the following situations is work said to be done?
   1. A. Walking with a load on the head in an upright position
   2. B. Getting up from a chair
   3. C. Pushing against a wall which does not move
   4. D. Sitting still behind a desk
   Answer: A
9. The energy stored in food is
   1. A. Electrostatic energy
   2. B. Chemical energy
   3. C. Solar energy
   4. D. Thermal energy
   Answer: B
10. A machine which has an energy loss of 10% will have an efficiency of
    1. A. 100%
    2. B. 90%
    3. C. 55%
    4. D. 10%
    Answer: B

Answers and solutions for questions 11 to 40 are free in the BECE Past Questions app, with timed practice and offline study.

On an iPhone? Download on the App Store

On Android? Get it on Google Play

11. 
    
    The switch in the electric circuit is represented by
    1. A. IV
    2. B. III
    3. C. II
    4. D. I
12. 
    
    The component labeled V in the electric circuit is a/an
    1. A. Ammeter
    2. B. Battery
    3. C. Lamp
    4. D. Voltmeter
13. The purpose of the component labeled IV in the electric circuit is to
    1. A. Supply energy to the circuit
    2. B. Measure the voltage of the battery
    3. C. Prevent too much current from flowing
    4. D. Close the circuit
14. Which of the following diseases is spread by a mosquito?
    1. A. Blindness
    2. B. Cholera
    3. C. Dysentery
    4. D. Elephantiasis
15. The intermediate host of the worm that causes bilharzia is
    1. A. Man
    2. B. Mosquito
    3. C. Tsetse fly
    4. D. Water snail
16. 
    
    The function of the part labelled IV in the fish diagram is to enable the fish to
    1. A. Sink in water
    2. B. Absorb oxygen from the water
    3. C. Protect itself from attack
    4. D. Detect smell in water
17. 
    
    The part labelled V in the fish diagram is used for
    1. A. Balancing
    2. B. Steering
    3. C. Surfacing
    4. D. Paddling
18. Which of the following arrangements is a probable food chain?
    1. A. Grass → Grasshopper → Toad → Snake → Crow
    2. B. Grasshopper → Grass → Goad → Lion → Man
    3. C. Crow → Snake → Toad → Grasshopper → Grass
    4. D. Grass → Goat → Lion → Man → Snake
19. One disease which can be transmitted through eating half-cooked meat is
    1. A. Guinea worm
    2. B. Hook worm
    3. C. Thread worm
    4. D. Tape worm
20. Which of the following characteristics are common to all living things?
    
    I. Response to stimuli
    
    II. Respiration
    
    III. Movement from place to place
    
    IV. Growth
    1. A. I and II only
    2. B. I and III only
    3. C. I, II and III only
    4. D. I, II and IV only
21. The part of sugar cane that is usually used for planting is the
    1. A. corm
    2. B. leaf
    3. C. stem
    4. D. sucker
22. Excess carbohydrate in the human body is stored as
    1. A. amino acid
    2. B. fatty acid
    3. C. glycogen
    4. D. glucose
23. Carbon dioxide in the blood is removed from the body through the
    1. A. kidneys
    2. B. lungs
    3. C. mouth
    4. D. skin
24. The end-product of protein digestion is
    1. A. amino acid
    2. B. glycerol
    3. C. glycogen
    4. D. peptide
25. The liquid component of the blood is known as
    1. A. cytoplasm
    2. B. haemoglobin
    3. C. plasma
    4. D. platelets
26. Digested food substances are absorbed into the blood stream in the
    1. A. kidneys
    2. B. liver
    3. C. stomach
    4. D. ileum
27. The part of the human ear which collects and directs sound waves is the
    1. A. ear drum
    2. B. ear lobe
    3. C. ear canal
    4. D. semi circular canal
28. The process by which waste substances are removed from the body is called
    1. A. egestion
    2. B. excretion
    3. C. perspiration
    4. D. respiration
29. The embryo of a mammal develops from
    1. A. eggs fertilized inside the body
    2. B. eggs fertilized outside the body
    3. C. self fertilized eggs
    4. D. only female sex cells
30. Which of the following gases is given out during photosynthesis?
    1. A. Carbon dioxide
    2. B. Carbon monoxide
    3. C. Nitrogen
    4. D. Oxygen
31. The component of the soil which is made up of the finest particle is
    1. A. clay
    2. B. humus
    3. C. loam
    4. D. sand
32. The soil type which is able to retain the highest amount of water is
    1. A. clay
    2. B. loam
    3. C. gravel
    4. D. sand
33. The formation of humus is aided by
    1. A. earthworms
    2. B. insects
    3. C. rats
    4. D. wind
34. The major cause of pollution at a stone quarry is
    1. A. dust
    2. B. human waste
    3. C. acid disposal
    4. D. smoke
35. Ringworm is a skin disease, which is caused by
    1. A. bacteria
    2. B. fungi
    3. C. insects
    4. D. worm
36. Which of the following habits will help in the control of diseases contracted through air?
    
    I. Not throwing human wastes into rivers
    
    II. Washing of hands after visiting the toilet
    
    III. Not spitting about in public places
    
    IV. Keeping foods always covered
    1. A. I and II only
    2. B. II and III only
    3. C. III only
    4. D. I, II and IV only
37. Soup which is not well-heated gets spoilt when kept for some time because the
    1. A. salt in the soup is too small
    2. B. water in the soup do not all evaporate
    3. C. heat in the soup is not enough to kill all bacteria
    4. D. water condenses back into the soup
38. The measure of the amount of water vapour in the air is known as
    1. A. cloud
    2. B. dew
    3. C. humidity
    4. D. temperature
39. Which of the following heavenly bodies is a star?
    1. A. Earth
    2. B. Moon
    3. C. Sun
    4. D. Milky way
40. The planet in our solar system which has the largest orbit is
    1. A. Jupiter
    2. B. Mars
    3. C. Pluto
    4. D. Venus

Paper 2: Theory

1. (a) Classify each of the following substances as colloids, suspension or solution: Smoke, breast milk, powdered milk in water, sea water, mist, steel.
   
   (b) (i) Define valency
   
   (ii) State the valencies of the following elements and radicals: α) Iron β) Zinc γ) Hydroxyl λ) Carbonate
   
   (c) Give one difference between plants and animals in terms of:
   
   (i) feeding
   
   (ii) excretion
   
   (iii) sensitivity
   
   (d) (i) Draw and label a diagram to show how an image is formed in a pinhole camera.
   
   (ii) State the characteristics of the image formed.
2. (a) State three differences between molecules in a solid state and liquid state.
   
   (b) (i) What is a solution?
   
   (ii) Difference between solutions and mixtures in terms of particle sizes.
   
   (c) Name the elements which make up the following compounds:
   
   (i) water
   
   (ii) common salt
   
   (iii) ammonia
   
   (d) Copy and complete the table below:
   
   Disease, Vector, Causative agent, Symptoms
   
   Malaria, Sleeping sickness
   
   (e) (i) What is a man-made satellite?
   
   (ii) Give two examples of natural satellites.
   
   (iii) Mention two applications of man-made satellites.
3. (a) Name the four main parts of a flower.
   
   (b) Give two external features of plants pollinated by wind.
   
   (c) Construct a food chain using any four of the organisms listed below: Goat, lizard, bird, snake, earthworm, grasscutter, grass, ant, cassava.
   
   (d) (i) The energy input of a machine is 7.5 J and the output energy is 5.0 J. Calculate the efficiency of the machine.
   
   (ii) Explain why the efficiency of a machine is always less than 1.
4. (a) (i) What is an embryo?
   
   (ii) Where does an embryo develop in the female mammal?
   
   (iii) Describe briefly how a developing embryo breathes in oxygen.
   
   (b) Name three plant nutrients.
   
   (c) (i) What is an electrical insulator?
   
   (ii) Explain how a comb rubbed vigorously on dry hair attracts small pieces of paper.
   
   (d) (i) List the chemical substances that are used in the preparation of ammonia gas in the laboratory.
   
   (ii) Write down a balanced chemical equation for the reaction.

Worked solutions to the theory questions are free in the app.

On an iPhone? Download on the App Store

On Android? Get it on Google Play