BECE 1996 Integrated Science Past Questions and Answers

Paper 1: Objectives

1. Which of the following is a sexually transmitted disease?
   1. A. Cholera
   2. B. Rickets
   3. C. Tuberculosis
   4. D. Syphilis
   5. E. Measles
   Answer: D
2. The excretory organs in man are the
   1. A. Kidneys and urethra
   2. B. Kidneys and the skin
   3. C. Kidneys, lungs and the skin
   4. D. Kidneys and the lungs
   5. E. Kidneys, bladder and urethra
   Answer: C
3. Which of the following farming practices is the best way of maintaining soil fertility?
   1. A. Crop rotation
   2. B. Seasonal cropping
   3. C. Constant ploughing
   4. D. Bush burning
   5. E. Mono cropping
   Answer: A
4. Which of the following is not considered as a reflex action?
   1. A. Blinking of the eye
   2. B. Moving the hand from a hot object
   3. C. Jerking of the knee
   4. D. Talking while eating
   5. E. Coughing to remove an object from the throat
   Answer: D
5. A boy exerts a force of 40.0 N to lift a load into a vehicle. If the work done is 80.0 J, calculate the distance through which the load is lifted.
   1. A. 0.5 m
   2. B. 2.0 m
   3. C. 40.0 m
   4. D. 120.0 m
   5. E. 3200.0 m
   Answer: B
6. Which of the following arrangements is the correct order of increasing complexity of the structure?
   1. A. Cells → systems → tissues → organs
   2. B. Cells → tissues → systems → organs
   3. C. Cells → organs → tissues → systems
   4. D. Cells → systems → organs → tissues
   5. E. Cells → tissues → organs → systems
   Answer: E
7. The law of conservation of energy states that energy can
   1. A. be created but not transformed
   2. B. be destroyed but not transformed
   3. C. neither be created nor transformed
   4. D. not be created but can be transformed
   5. E. neither be created nor destroyed, but only be transformed
   Answer: E
8. On the moon, there are large holes called
   1. A. Valleys
   2. B. Gullies
   3. C. Spurs
   4. D. Craters
   5. E. Pits
   Answer: D
9. The darkest part of a shadow formed during an eclipse is called
   1. A. Lunar eclipse
   2. B. Annular eclipse
   3. C. Penumbra
   4. D. Umbra
   5. E. Solar eclipse
   Answer: D
10. The main waste products formed in plants are
    1. A. Water, carbon dioxide and urea
    2. B. Water, carbon dioxide and oxygen
    3. C. Water, carbon dioxide and mineral salts
    4. D. Water, ammonium compounds and oxygen
    5. E. Water, ammonium compounds and carbon dioxide
    Answer: D

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11. A mixture of sand and water can be separated through
    1. A. Filtration
    2. B. Ionization
    3. C. Condensation
    4. D. Sedimentation
    5. E. Evaporation
12. Which of the following chemical equations is the correct representation of the preparation of carbon dioxide?
    1. A. CaCO3 + 2HCl → CaO + Cl2 + H2 + CO2
    2. B. CaCO3 + 2HCl → CaCl2 + H2CO3
    3. C. CaCO3 + 2HCl → CaO + Cl2 + H2O + CO
    4. D. CaCO3 + 2HCl → CaCl2 + H2 + CO2
    5. E. CaCO3 + 2HCl → CaCl2 + H2O + CO2
13. Which of the following is not an example of matter?
    1. A. Hydrogen
    2. B. Oxygen
    3. C. Light
    4. D. Water
    5. E. Charcoal
14. A stone with mass 80.0 g was put into a measuring cylinder containing water. If the water level rises by 20.0 cm3, calculate the density of the stone.
    1. A. 0.25 g cm-3
    2. B. 1.20 g cm-3
    3. C. 1.80 g cm-3
    4. D. 3.30 g cm-3
    5. E. 4.00 g cm-3
15. The sun is made up of burning
    1. A. Gases
    2. B. Rocks
    3. C. Gold
    4. D. Coal
    5. E. Sulphur
16. The force overcome by a machine is known as the
    1. A. Effort
    2. B. Load
    3. C. Pivot
    4. D. Lever
    5. E. Work
17. Calculate the work done when a weight of 20.0 N is lifted vertically through a distance of 10.0 cm
    1. A. 2000.0 J
    2. B. 200.0 J
    3. C. 20.0 J
    4. D. 2.0 J
    5. E. 0.2 J
18. Heat travels through a vacuum by a process known as
    1. A. Conduction
    2. B. Convection
    3. C. Radiation
    4. D. Vibration
    5. E. Transmission
19. Soil aeration can be improved by
    1. A. Adding mineral to the soil
    2. B. Application of fertilizer to the soil
    3. C. Weathering
    4. D. Activities of earthworms
    5. E. Manuring
20. Which of the following does not play any part in digestion?
    1. A. Mouth
    2. B. Duodenum
    3. C. Rectum
    4. D. Pancreas
    5. E. Stomach
21. Most machines waste energy because of
    1. A. old age
    2. C. friction
    3. E. too much effort
22. All the following add nitrates to the soil except
    1. A. Okro
    2. B. Broad beans
    3. C. French beans
    4. D. Groundnuts
    5. E. Pigeon pea
23. The blood in mammals is composed of
    1. A. a red liquid
    2. B. red blood cells and white blood cells
    3. C. liquid plasma and solid corpuscles
    4. D. blood protein and glycerol
    5. E. sugar and mineral salts only
24. In a machine, 200.0 J of energy was lost as heat. If the energy input is 600.0 J, what is the efficiency of the machine?
    1. A. 67%
    2. B. 40%
    3. C. 33%
    4. D. 30%
    5. E. 12%
25. The type of energy stored in fuels is called
    1. A. light energy
    2. B. solar energy
    3. C. electrical energy
    4. D. kinetic energy
    5. E. chemical energy
26. An object at rest may have
    1. A. velocity
    2. B. momentum
    3. C. kinetic energy
    4. D. potential energy
    5. E. acceleration
27. Birds are able to fly because they have
    1. A. hollow bones
    2. B. web legs
    3. C. tail feathers
    4. D. flat chest
    5. E. wide eyes
28. The chief source of energy in the world today is
    1. A. coal
    2. B. crude oil
    3. C. natural gas
    4. D. uranium
    5. E. water
29. Which of the following is used by plants to make its food?
    1. A. carbon monoxide
    2. B. oxygen
    3. C. carbon dioxide
    4. D. hydrogen
    5. E. nitrogen
30. Sleeping sickness is spread by
    1. A. blackfly
    2. B. firefly
    3. C. Mosquito
    4. D. Housefly
    5. E. Tsetse fly
31. An example of a crop that reduces the fertility of the soil rapidly is
    1. A. Beans
    2. B. Legumes
    3. C. Groundnuts
    4. D. Cassava
    5. E. Plantain
32. The blackpod disease which attacks cocoa pods is caused by
    1. A. virus
    2. B. bacterium
    3. C. plasmodium
    4. D. fungus
    5. E. protozoa
33. The organ which enables a fish to breathe in water is the
    1. A. Nostril
    2. B. Pectoral fin
    3. C. Dorsal fin
    4. D. Gall bladder
    5. E. Gill
34. Which of the following part of a flower grows into the seed?
    1. A. Stamen
    2. B. Ovule
    3. C. Ovary
    4. D. Stigma
    5. E. Sepal
35. When the palms of the hand are rubbed together, kinetic energy is changed to
    1. A. thermal energy
    2. B. potential energy
    3. C. solar energy
    4. D. elastic energy
    5. E. chemical energy
36. Trees in desert regions have thick barks which enables them to
    1. A. prevent heat loss
    2. B. absorb more light
    3. C. prevent water loss
    4. D. absorb more water
    5. E. absorb more oxygen
37. Which of the following is true about loamy soil?
    
    I. Is formed from a mixture of sand and clay
    
    II. It is good for plant cultivation
    
    III. Its water retention is poor
    1. A. I only
    2. B. I and II only
    3. C. I and III only
    4. D. II and III only
    5. E. I, II and III
38. In which part of the alimentary canal is food finally changed into a form that can be absorbed into the bloodstream?
    1. A. small intestines
    2. B. oesophagus
    3. C. mouth
    4. D. stomach
    5. E. large intestines
39. In which units are the vast distances between stars in space measured?
    1. A. Knots
    2. B. Kilometres
    3. C. Furlongs
    4. D. Miles
    5. E. Light years
40. Which of the following happens during fertilization in humans?
    1. A. A membrane forms around the egg
    2. B. only one sperm fuses with the egg
    3. C. the egg divides into two
    4. D. the egg moves down into the egg tube
    5. E. the egg moves down into the womb

Paper 2: Theory

1. (a) Define the following terms:
   
   (i) erosion
   
   (ii) reproduction
   
   (iii) parasite
   
   (iv) excretion
   
   (b) Give one example each of erosion and parasite.
   
   (c) Draw and label a diagram of the female reproductive organ in a human being.
   
   (d) (i) Define the term work.
   
   (ii) An amount of 300.0 J of work is done when a force moves through a distance of 10.0 m in the direction of the force. Calculate the value of the force.
   
   (e) Write down the names of the following compounds:
   
   (i) NH4Cl
   
   (ii) HCl
   
   (iii) CuSO4
   
   (iv) FeCl3
   
   (f) Explain how sulphur can be obtained from a mixture of powdered sulphur and iron filings.
2. (a) Draw and label a diagram to show how the eclipse of the sun is formed.
   
   (b) (i) What is a lever?
   
   (ii) Classify the following as first class lever, second class lever, or third class lever by copying and completing the table below:
   
   Beam balance, crowbar, wheelbarrow, a pair of scissors, claw hammer, sugar tong, human fore-arm, and bottle opener.
   
   (c) (i) What is pollination?
   
   (ii) Give two agents of pollination.
   
   (d) Name three excretory organs and the products they excrete.
   
   (e) (i) What is an alloy?
   
   (ii) What are the compositions of each of the following alloys? Bronze, Brass, Steel, and Duralumin
   
   (f) Sodium chloride is prepared by the reaction between dilute hydrochloric acid and sodium hydroxide solution. Write down the equation for this reaction.
3. (a) An atom has an atomic number of 8 and a mass number of 16. State the number of each of the following in the atom:
   
   (i) Protons
   
   (ii) Electrons
   
   (iii) Neutrons
   
   (b) (i) Draw the structure of the atom in (a) above
   
   (ii) If the atom in (a) above gains two electrons, what will be the charge of the ion?
   
   (c) State the end-product of the following food substances:
   
   (i) Carbohydrates
   
   (ii) Proteins
   
   (iii) Fats
   
   (d) (i) What is the preservation of food?
   
   (ii) List four methods of food preservation.
   
   Explain why one of the methods you have listed is used for food preservation.
   
   (e) (i) An object is placed in front of a plane mirror. Draw a ray diagram to show how the image of the object is formed.
   
   (ii) State two characteristics of an image formed by a plane mirror.
4. (a) (i) Give the names of organisms which cause the following diseases:
   
   Sleeping sickness, Cholera, Malaria, Bilharzia
   
   (ii) Which part of the following crops does a farmer usually grow?
   
   Banana, cocoyam, tomato, ginger, yam, cassava
   
   (b) Name the organs used by the following organisms for respiration:
   
   (i) Tilapia
   
   (ii) Toad
   
   (c) (i) What happens to the temperature of water that is boiling in an open container?
   
   (ii) Give two characteristics of a liquid.
   
   (iii) Name the three processes by which heat is transmitted.
   
   (iv) State two applications of the expansion of solids in everyday life.
   
   (d) Explain the following terms:
   
   (i) Physical change
   
   (ii) Chemical change
   
   (e) State whether each of the following is a physical or a chemical change:
   
   (i) rusting of iron
   
   (ii) freezing of water
   
   (iii) burning of wood
   
   (iv) fermentation
   
   (v) grinding of chalk
   
   (vi) dissolving sugar in water
   
   (f) Name the compound formed when the following elements combine:
   
   (i) Iron and sulphur
   
   (ii) Zinc and oxygen
   
   (iii) Sodium and chlorine
   
   (iv) Calcium and chlorine

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