BECE 1991 Integrated Science Past Questions and Answers

Paper 1: Objectives

1. The digestion of carbohydrates starts in the
   1. A. mouth
   2. B. throat
   3. C. stomach
   4. D. duodenum
   5. E. ileum
   Answer: A
2. Photosynthesis in plants requires chlorophyll, sunlight, water and
   1. A. oxygen
   2. B. carbon dioxide
   3. C. steam
   4. D. hydrogen
   5. E. nitrogen
   Answer: B
3. Which of the following objects is a good conductor of heat?
   1. A. Wood
   2. B. Rubber
   3. C. Copper
   4. D. Plastic
   5. E. Wool
   Answer: C
4. What is the work done when a force of 2.5 N moves through a distance of 4 m?
   1. A. 0.6 J
   2. B. 1.5 J
   3. C. 1.6 J
   4. D. 6.5 J
   5. E. 10.0 J
   Answer: E
5. The person who studies the weather is
   1. A. a pilot
   2. B. a physician
   3. C. an astronaut
   4. D. an astrologer
   5. E. a meteorologist
   Answer: E
6. A child suffering from Kwashiorkor lacks
   1. A. protein
   2. B. fats and oils
   3. C. vitamins
   4. D. mineral salts
   5. E. carbohydrates
   Answer: A
7. Which of the following substances can dissolve almost all solutes?
   1. A. Kerosene
   2. B. Palm oil
   3. C. Water
   4. D. Turpentine
   5. E. Petrol
   Answer: C
8. All of the following methods are used to preserve food in our homes except
   1. A. smoking
   2. B. salting
   3. C. boiling
   4. D. canning
   5. E. drying
   Answer: D
9. The chemical symbol for Potassium is
   1. A. Fe
   2. B. K
   3. C. P
   4. D. Pb
   5. E. Zn
   Answer: B
10. The part of the banana plant used in reproduction is called
    1. A. sucker
    2. B. rhizome
    3. C. stem
    4. D. tuber
    5. E. bulb
    Answer: A

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11. The process by which kerosene rises up the wick in a lantern is
    1. A. evaporation
    2. B. conduction
    3. C. diffusion
    4. D. capillarity
    5. E. convection
12. Which of the following animals can live both in water and on land?
    1. A. Mouse
    2. B. Rat
    3. C. Frog
    4. D. Grasscutter
    5. E. Mud fish
13. A bar magnet attracts all the following objects except
    1. A. pins
    2. B. pair of scissors
    3. C. nails
    4. D. razor blade
    5. E. glass
14. When an object moves from a rough surface onto a smooth one with the same energy, its speed
    1. A. increases
    2. B. decreases
    3. C. remains the same
    4. D. becomes zero
    5. E. cannot be determined
15. How many states of matter do we have?
    1. A. 2
    2. B. 3
    3. C. 4
    4. D. 5
    5. E. 6
16. All of the following animals lay eggs except
    1. A. fish
    2. B. lizard
    3. C. rabbit
    4. D. toad
    5. E. turkey
17. Which of these is not a sense organ?
    1. A. Eye
    2. B. Ear
    3. C. Nose
    4. D. Skin
    5. E. Heart
18. Which of the following processes is used to separate insoluble solids from liquids?
    1. A. Distillation
    2. B. Sublimation
    3. C. Filtration
    4. D. Evaporation
    5. E. Sedimentation
19. An organism living on another organism and causing harm to it is referred to as a
    1. A. host
    2. B. parasite
    3. C. producer
    4. D. consumer
    5. E. vector
20. What sickness are you likely to be suffering from when you have blood in your urine?
    1. A. Typhoid
    2. B. Syphilis
    3. C. Cholera
    4. D. Bilharzia
    5. E. Ulcer
21. Which of these is a vegetable crop?
    1. A. Pineapple
    2. B. Potato
    3. C. Cabbage
    4. D. Cassava
    5. E. Mango
22. Insects can walk on the surface of water because of
    1. A. Diffusion
    2. B. Capillarity
    3. C. Viscosity
    4. D. Friction
    5. E. Surface tension
23. When a substance is made up of the same kind of atoms it is called
    1. A. A mixture
    2. B. A compound
    3. C. An element
    4. D. A solution
    5. E. A solvent
24. What do human beings obtain from food to enable them work?
    1. A. Blood
    2. B. Energy
    3. C. Vitamins
    4. D. Proteins
    5. E. Minerals
25. Which of these instruments is used in measuring humidity?
    1. A. Hygrometer
    2. B. Thermometer
    3. C. Photometer
    4. D. Potometer
    5. E. Anemometer
26. The part of the plant which is found in the soil is the
    1. A. Flower
    2. B. Stem
    3. C. Leaf
    4. D. Root
    5. E. Fruit
27. When salt is put into soups, it
    1. A. melts
    2. B. sublimes
    3. C. dissolves
    4. D. evaporates
    5. E. expands
28. The complete development of a human baby in the womb normally takes
    1. A. five months
    2. B. six months
    3. C. seven months
    4. D. nine months
    5. E. eleven months
29. The washing away of the top soil by running water is called
    1. A. erosion
    2. B. rotation
    3. C. plantation
    4. D. weathering
    5. E. irrigation
30. All of the following are solids except
    1. A. aluminium
    2. B. lead
    3. C. silver
    4. D. potassium
    5. E. mercury
31. The process by which living things increase in number is referred to as
    1. A. growth
    2. B. development
    3. C. reproduction
    4. D. multiplication
    5. E. addition
32. Which of the following soil types can hold the least amount of water?
    1. A. Loam
    2. B. Clay
    3. C. Silt
    4. D. Sand
    5. E. Sandy loam
33. When a piece of candle is heated, it changes from
    1. A. liquid to gas
    2. B. liquid to flame
    3. C. solid to flame
    4. D. solid to liquid
    5. E. solid to gas
34. Which of the following metals is used for making roofing sheets?
    1. A. Zinc
    2. B. Silver
    3. C. Mercury
    4. D. Tin
    5. E. Aluminium
35. What is the name of the final product of protein digestion?
    1. A. Glucose
    2. B. Fatty acid
    3. C. Amino acid
    4. D. Glycerol
    5. E. Sucrose
36. The lion is a typical example of
    1. A. a pet
    2. B. a carnivore
    3. C. an omnivore
    4. D. a herbivore
    5. E. a parasite
37. A uniform mixture of two or more metals is called
    1. A. a solute
    2. B. a colloid
    3. C. a compound
    4. D. a suspension
    5. E. an alloy
38. Which of the following activities illustrates distillation?
    1. A. Preparation of soup
    2. B. Preparation of akpeteshie
    3. C. Tapping of palm wine
    4. D. Preparation of starch
    5. E. Freezing of water
39. The hatching of eggs into chicken depends on constant supply of
    1. A. water
    2. B. feed
    3. C. pressure
    4. D. heat
    5. E. light
40. A fertilized ovule results in the formation of
    1. A. an ovary
    2. B. a style
    3. C. a pistil
    4. D. a stigma
    5. E. an embryo

Paper 2: Theory

1. (a) (i) What is the difference between self-pollination and cross-pollination?
   
   (ii) Name two agents of cross-pollination.
   
   (b) A ray of light strikes the surface of a plane mirror at an oblique angle. Draw a ray diagram to show each of the following:
   
   (i) the normal
   
   (ii) the incident ray
   
   (iii) the reflected ray
   
   (iv) the angle of incidence
   
   (v) the angle of reflection
   
   (c) Give one property of the image formed by a plane mirror.
   
   (d) (i) Carbon dioxide is prepared in the laboratory by pouring some dilute hydrochloric acid on calcium carbonate. Give a balanced equation for this reaction.
   
   (ii) How would you test for carbon dioxide?
   
   (iii) Give one use of carbon dioxide.
2. (a) Define the following processes:
   
   (i) Excretion
   
   (ii) Respiration
   
   (iii) Name one organ in man which is responsible for each of the processes in (a) (i) and (ii) above
   
   (b) Mention three ways of protecting people from infection during an outbreak of cholera.
   
   (c) Write down the chemical names of the following compounds.
   
   (i) MgCl2
   
   (ii) FeS
   
   (iii) CuSO4
   
   (iv) NH4OH
   
   (d) List the names of the planets in order of their distances away from the sun, starting with the one nearest to it.
3. (a) (i) What is a solution?
   
   (ii) Write down balanced chemical equations for the preparation of the following substances:
   
   α) Sodium Chloride from a reaction between Sodium hydroxide and dilute hydrochloric acid
   
   β) Ammonia from a reaction between nitrogen and hydrogen.
   
   (b) Classify the following under voluntary and involuntary actions:
   
   (i) Laughing
   
   (ii) Blinking of the eyes
   
   (iii) Sneezing
   
   (iv) Eating
   
   (c) (i) State four characteristics common to all living things.
   
   (ii) Write down one function of each of the following:
   
   α) Leaves
   
   β) Roots
   
   (d) (i) Mention two main defects of the human eye
   
   (ii) How are these defects corrected in each case?
4. (a) (i) Name the gas used in both rusting and burning.
   
   (ii) State two ways in which rusting can be prevented in everyday life.
   
   (b) Classify each of the following items as an element, compound, mixture, or colloid:
   
   (i) Sodium chloride
   
   (ii) Sugar solution
   
   (iii) Fog
   
   (iv) Hydrogen
   
   (v) Sulphur
   
   (c) (i) Use any three of the following to form a food chain: Man, bird, green grass, goat, grasshopper
   
   (ii) Name two diseases that can be controlled by immunization.
   
   (d) (i) A boy throws a stone vertically up into the air. What are the energy changes as the stone falls to the ground?
   
   (ii) Name two appliances which use electromagnets in their operation.
   
   (iii) List two ways in which a magnet can lose its magnetism.

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