BECE 2026 Integrated Science Past Questions and Answers

Paper 1: Objectives

1. The stage of development between childhood and adulthood in humans is known as
   1. A. infancy
   2. B. adolescence
   3. C. teenage
   4. D. puberty
   Answer: B
2. This symbol represents two atoms of oxygen. Oxygen gas is represented by the chemical symbol O₂.
   1. A. atoms of oxygen
   2. B. molecules of oxygen
   3. C. ions of oxygen
   4. D. elements of oxygen
   Answer: A
3. Cassava → Rat → Snake → Hawk. The primary consumer is the
   1. A. rat
   2. B. cassava
   3. C. hawk
   4. D. snake
   Answer: A
4. Which of the following planets are closer to the sun than the earth?
   1. A. Venus and Mercury
   2. B. Venus and Mars
   3. C. Venus and Saturn
   4. D. Mercury and Mars
   Answer: A
5. The chemical component of milk of magnesia is
   1. A. potassium hydroxide
   2. B. calcium hydroxide
   3. C. sodium hydroxide
   4. D. magnesium hydroxide
   Answer: D
6. The ways of conserving electrical energy include: I. putting off electrical appliances when not in use II. ironing clothes one at a time III. ironing clothes in bulk
   1. A. II only
   2. B. I only
   3. C. I and III only
   4. D. I and II only
   Answer: C
7. Which of the following methods are used in making magnets? I. Induction II. Stroking III. Hitting
   1. A. I and III only
   2. B. I and II only
   3. C. I, II and III
   4. D. II and III only
   Answer: B
8. Which of the following practices is NOT a cultural practice in crop production?
   1. A. Pest control
   2. B. Nursing
   3. C. Weeding
   4. D. Mulching
   Answer: B
9. The linear sequence of feeding relationship among living things is called
   1. A. food chain
   2. B. food web
   3. C. producer
   4. D. ecology
   Answer: A
10. What is formed when the path of light rays is blocked by an opaque object?
    1. A. Echo
    2. B. Shadow
    3. C. Penumbra
    4. D. Umbra
    Answer: B

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11. Which statement about photosynthesis is correct?
    1. A. Oxygen is the main product
    2. B. It occurs in the presence of light energy
    3. C. Plants obtain water from the atmosphere
    4. D. Leaves without chlorophyll can photosynthesize
12. The force that opposes motion is
    1. A. gravitational force
    2. B. magnetic force
    3. C. frictional force
    4. D. electrostatic force
13. The transistor in an electronic device is used I. as a switch II. for amplifying alternating signals III. in preventing overheating in electric irons
    1. A. I and II only
    2. B. I only
    3. C. I, II and III
    4. D. I and III only
14. A hazardous substance emitted from car exhaust fumes is
    1. A. CO
    2. B. CO2
    3. C. H2
    4. D. H2O
15. To maintain soil fertility, a farmer should NOT practice
    1. A. continuous cropping
    2. B. crop rotation
    3. C. consistent manuring
    4. D. fertilizer application
16. Green plants that make their own food are called
    1. A. parasites
    2. B. producers
    3. C. decomposers
    4. D. consumers
17. Energy transformation in an electric pressing iron is
    1. A. electrical → sound
    2. B. electrical → potential
    3. C. electrical → chemical
    4. D. electrical → heat
18. Mosquitoes cannot breed in a
    1. A. swamp
    2. B. pool
    3. C. pond
    4. D. river
19. Which food contains the greatest amount of protein?
    1. A. Plantain
    2. B. Cheese
    3. C. Mushroom
    4. D. Yam
20. Anions contain
    1. A. more protons than electrons
    2. B. more protons than neutrons
    3. C. same protons and neutrons
    4. D. less protons than electrons
21. The combining powers of sodium and oxygen atoms are 1 and 2 respectively. The chemical formula of a stable compound formed between them is
    1. A. Na2O
    2. B. NaO
    3. C. NaO2
    4. D. Na2O2
22. The appropriate apparatus for separating a mixture of water and kerosene is
    1. A. filter funnel
    2. B. separating funnel
    3. C. condenser
    4. D. evaporating dish
23. The most suitable tool for transplanting vegetable seedlings is the
    1. A. cutlass
    2. B. hoe
    3. C. hand trowel
    4. D. hand fork
24. The hardest part of the tooth is the
    1. A. dentine
    2. B. enamel
    3. C. cement
    4. D. pulp
25. Hand trowel is used in farming to
    1. A. remove weeds
    2. B. level soil surface
    3. C. turn manure during compost making
    4. D. transplant seedlings
26. Which of the following methods could conserve soil water on a farm? I. Adequate spacing II. Disease control III. Cover cropping
    1. A. I and III only
    2. B. I and II only
    3. C. I, II and III
    4. D. II and III only
27. An example of a simple lever which has its effort at the centre is
    1. A. a pair of scissors
    2. B. a bottle opener
    3. C. the beam balance
    4. D. a pair of forceps
28. A student trapped in a cupboard died because
    1. A. the oxygen in the cupboard was used up
    2. B. only nitrogen was left
    3. C. carbon dioxide ran short
    4. D. all air was used up
29. Which statement about noble gases is correct?
    1. A. monoatomic molecules
    2. B. charged gases
    3. C. very reactive
    4. D. diatomic molecules
30. The bottom of a pool appears closer than it is. This is due to
    1. A. transparency of water
    2. B. reflection
    3. C. rectilinear propagation
    4. D. refraction
31. In which farming system does a farmer rely on animals in case of crop failure?
    1. A. mixed farming
    2. B. crop rotation
    3. C. organic farming
    4. D. mixed cropping
32. Two atoms of the same element differ by their
    1. A. proton numbers
    2. B. electron numbers
    3. C. atomic numbers
    4. D. neutron numbers
33. The best method of preventing teenage pregnancy is to
    1. A. avoid having sex
    2. B. use a pill
    3. C. practice safe sex
    4. D. have one sexual partner
34. An example of an inclined plane is a
    1. A. see-saw
    2. B. flat road surface
    3. C. pulley
    4. D. path of a hill
35. Which substance contains natural acid?
    1. A. wood ash
    2. B. vinegar
    3. C. saliva
    4. D. bile
36. The gas evolved when sodium reacts with water is
    1. A. hydrogen
    2. B. carbon dioxide
    3. C. chlorine
    4. D. oxygen
37. Which type of human teeth is used for biting food?
    1. A. canines
    2. B. incisors
    3. C. molars
    4. D. premolars
38. Which human activity maintains the balance of nature?
    1. A. pollution
    2. B. deforestation
    3. C. mining
    4. D. afforestation
39. The recommended floor space per bird is 0.6 m². How many birds can occupy a 72 m² poultry house?
    1. A. 72
    2. B. 40
    3. C. 300
    4. D. 120
40. The force produced when a comb is rubbed through dry hair is
    1. A. frictional force
    2. B. magnetic force
    3. C. gravitational force
    4. D. electrostatic force

Paper 2: Theory

Section A and Section B

This paper is in two sections: A and B. Answer Question 1 in Section A and any other three questions in Section B. Answer all the questions in your answer booklet. Credit will be given for clarity of expression and orderly presentation of material.

1. (a) Figure 1(a) is an illustration of three types of domestic farm animals. Study the figure carefully and answer the questions that follow.
   
   (i) Mention one type of feed given to each of the animals labelled A, B and C.
   
   (ii) Name one nutrient each from the types of feed mentioned in (i).
   
   (iii) Give one function each of the nutrient named in (ii).
   
   (iv) Which of the animals in Fig. 1(a) can be classified as a ruminant?
   
   (b) Figure 1(b) is an illustration of the respiratory system of humans. Study the figure carefully and answer the questions that follow.
   
   (i) Name the parts labelled I, II, III, IV and V.
   
   (ii) Give one function each of the parts labelled II, III and V.
   
   (iii) Name the most important gas during the process of respiration that is:
   (α) used by the body;
   (β) brought out from the body.
   
   (c) The diagrams below are illustrations of circuit symbols of electric components used to investigate the relationship between potential difference and electric current. Study the diagrams carefully and answer the questions that follow.
   
   (i) Name the symbols labelled II, III and IV.
   
   (ii) Draw a circuit diagram using all the symbols labelled I, II, III, IV and V.
   
   (iii) If the circuit is closed and V reads 5 units with IV reading 15 units, determine the value of II in S.I. units.
   
   (d) A number of acid, base and salt solutions of different pH values were prepared in test tubes labelled A, B, C, D and E. The table below shows the pH and the corresponding colours of each solution on addition of three drops of universal indicator.
   
   Solution A: 0.1 mol dm⁻³ HCl — Red
   Solution B: 0.1 mol dm⁻³ CH₃COOH — pH 5 — Orange
   Solution C: 0.1 mol dm⁻³ NaCl
   Solution D: 0.1 mol dm⁻³ NH₃ — pH 9 — Blue
   Solution E: 0.1 mol dm⁻³ NaOH — Violet
   
   (i) Identify the solution that would have a pH value equal to:
   (α) 7;
   (β) 14.
   
   (ii) Identify the solution that can be classified as a/an:
   (α) strong acid;
   (β) neutral;
   (γ) weak base.
   
   (iii) Suggest the pH value of solution A.
   
   (iv) Identify two solutions in the table that will react to form salt and water.
   
   (v) What would be the colour of solution C upon addition of drops of universal indicator.
2. (a) Give two examples of each of the following types of diseases of humans:
   (i) Fungal disease;
   (ii) Deficiency disease;
   (iii) Non-communicable disease.
   
   (b) Explain the following terms:
   (i) Homogeneous mixture;
   (ii) Heterogeneous mixture.
   
   (c) (i) Explain briefly why dragging an object on a smooth surface is easier than on a rough surface.
   
   (ii) Name the S.I. unit of:
   (α) force;
   (β) work.
   
   (d) (i) What is a balanced ration in poultry feed?
   
   (ii) Give three effects of malnutrition in poultry.
3. (a) A simple electric circuit is made up of a cell, resistor and a bulb.
   
   (i) State the observation that will be made when the number of:
   (α) cells is doubled;
   (β) bulbs is doubled.
   
   (ii) Explain the observations stated in (i).
   
   (b) Explain briefly how the following factors affect vegetable crop production:
   (i) soil type;
   (ii) nearness to source of water;
   (iii) nearness to market.
   
   (c) Explain briefly the following interactions in an ecosystem:
   (i) Mutualism;
   (ii) Commensalism.
   
   (d) (i) Distinguish between the following chemical substances:
   (α) Element and compound;
   (β) Molecule and ion.
   
   (ii) Write the chemical formula of each of the following binary compounds:
   (α) Aluminium fluoride;
   (β) Ammonia.
4. (a) Name two:
   (i) micro-nutrients of plants;
   (ii) macro-nutrients of plants.
   
   (b) Name the component of the circulatory system that performs each of the following functions:
   (i) transport of nutrients;
   (ii) protection of the body against infection;
   (iii) temperature regulation.
   
   (c) State three effects of poor waste management on human health.
   
   (d) (i) Differentiate between a colloid and a suspension.
   
   (ii) Classify the following mixtures as solution, colloid or suspension:
   (α) Groundnut paste and water;
   (β) Milk and water;
   (γ) Sugar and water.
   
   (e) (i) What is work output?
   
   (ii) Explain how work output affects the efficiency of a machine if work input is fixed.
5. (a) An atom of an element is represented as X with atomic number 8 and mass number 17.
   
   (i) Determine the number of:
   (α) Protons;
   (β) Electrons;
   (γ) Neutrons.
   
   (ii) State the position of the element X on the periodic table in terms of:
   (α) Group;
   (β) Period.
   
   (b) (i) Explain briefly heat transfer by conduction.
   
   (ii) Name two other methods of heat transfer.
   
   (c) (i) Give two examples of water bodies.
   
   (ii) State two practices of humans that destroy water bodies.
   
   (iii) State two methods of conserving water bodies.
   
   (d) (i) State three ways by which bacterial diseases are managed.
   
   (ii) Give an example of a bacterial disease.

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