100 Integrated Science Questions And Answers For 2023 Candidates(Objectives)

We have compiled likely Integrated Science questions and Answers for the 2023 BECE candidates. These questions were selected based on some confirmed topics as well as past questions.

All candidates are advised to go through these questions carefully.

1. The S.I. unit for measuring the work done by a force is
A. J. B. K. C. N. D. W.

2. The chemical formula of a compound describes the
A. number of molecules in the compound
B. type of bonding in the compound
C. ratio in which the elements are combined
D. state of the compound

3. Which of the following life processes is represented by the equation
Glucose +oxygen→carbon dioxide +water+ energy
A. Digestion
B. Excretion
C. Photosynthesis
D. Respiration

4. Each layer of soil profile is known as
A. horizon
B. litter
C. regolith
D. solum

5. When the p-n junction of a transistor is reverse biased
A. current flows from the p-type to the n-type
B. no current flows from the p-type to the n-type
C. conduction of current occurs
D. current flows from the n-type to the p-type

6. When a solid-liquid mixture is filtered, the liquid that separates out into the container is called
A. filtrate
B. residue
C. sediment
D. solution

7. Which of the following processes involves the solid state of matter?
A. Boiling
B. Condensation
C. Evaporation
D. Melting

8. Which of the following farming systems is most effective in maintaining soil fertility?
A. Crop rotation
B. Land rotation
C. Mixed cropping
D. Mono culture

9. The disease in humans which is associated within sufficient intake of calcium is
A. goiter
B. kwashiorkor
C. rickets
D. scurvy

10. The arrow in the circuit symbol of either n-p-n or p-n-p transistor is always on the
A. base lead
B. collector lead C. emitter lead D. receiver lead

11. Which of the following insect pests of crops has piercing and sucking mouthparts?
A. Aphids
B. Grasshoppers
C. Stem borers
D. Termites

12. A reflex action involves the
A. brain and muscles
B. brain and nerves
C. spinal cord and muscles
D. spinal cord and nerves

13. The type of image formed in a plane mirror is always
A. diminished
B. enlarged
C. real
D. virtual

14. Which of the following statements about acids are correct?
I. They turn red litmus paper blue
II. They can be classified as either organic or mineral acids
III. They can be neutralized by bases

A. I and II only B. I and III only C. II and III only D. I,II and III

15. A transistor is said to operate in an active region when
A. one p-n junction is forward biased and the other is reversed biased
B. base-emitter junctions are reversed biased
C. both p-n junctions are reversed biased
D. base-collector junction is forward biased

16. Tuberculosis is spread
A. through eating of contaminated food
B. when an infected person coughs openly into the air
C. through shaking of hands of infected persons
D. through sharing of contaminated syringes

17. One function of engine oil in the engine of a tractor is to
A. warm the engine
B. enhance air intake
C. ensure proper mixing of fuel
D. lubricate the engine parts

18. Blackpod is a disease of
A. cocoa
B. coffee
C. guava
D. mango

19. The efficiency of a machine is always less than 100% because part of the energy input is used to
A. stop the machine after working B. perform useful work on the load C. overcome friction
D. lift the machine up

20. Which of the following electronic components are used to produce oscillator circuits?
I. Transistor II. Inductor III. Capacitor

A. I and II only B. I and III only C. II and III only D. I,II andIII

21. Which of the following sources of light is natural?
A. Filament bulb
B. Fluorescent tube
C. Glow worm
D. Firecracker

22. Which of the following substances are carried by the blood?
I. Hormones
II. Urine
III. Oxygen
IV. Carbon dioxide

23. The practice of starting new organization in response to identified opportunities is termed
A. agribusiness
B. business enterprise
C. entrepreneurship
D. management

24. The sub-atomic particle with zero charge in the nucleus of an atom is called
A. electron
B. ion
C. neutron
D. proton

25. Which of the following management practices greatly helps in record keeping?
A. Culling
B. Debeaking
C. Dehorning
D. Identification

26. In the pin-hole camera,when the size of the pin-hole is increased, the image formed is
A. blurred
B. erect
C. magnified
D. virtual

27. Non-reactive metals are preferred in making ornaments and jewellery because they
A. are attractive
B. do not react with atmospheric oxygen
C. do not retain their lustre

D. are corrosive

28. Producers in an ecosystem are plants that
A. attract insects
B. feed on other plants
C. manufacture their own food
D. trap insects

29. The use of resistant varieties of crop in controlling diseases is described as
A. biological control method B. chemical control method C. cultural control method
D. physical control method

30. The chemical formula for aluminium oxide is represented as AlxOy. The values of x and y are respectively
A. 3 and 2
B. 3 and 1
C. 1 and 3
D. 2 and 3

31. In electrical circuits, the component that protects appliances against very high currents is the
A. capacitor
B. fuse
C. resistor
D. switch

32. One benefit of technology to industrialization is
A. environmental pollution
B. reduction in skillful labour
C. provision of machinery
D. increase in cost of production of goods

33. Which of the following factors contribute to early parenthood?
I. Poverty
II. Illiteracy
III. Lack of parental care
IV. Peer pressure

A. I and II only B. II and III only C. III and IV only D. I,II,III and IV

34. Which of the following examples of fertilizers improves soil texture?

A. Compost
B. NPK
C. Sulphate of ammonia
D. Urea

35. The reaction between hydrochloric acid and sodium hydroxide produces
A. sodium oxide only
B. sodium chloride only
C. sodium oxide and water
D. sodium chloride and water

36. In modern electrical wirings the colour code for the live wireis
A. blue
B. brown
C. green
D. green and yellow

37. An example of soil minor nutrient is
A. calcium
B. iron
C. nitrogen
D. phosphorus

38. The complete development of a human foetus in the womb normally takes
A.7 months B. 8 months C. 9 months D. 10 months

39. A material that allows a small amount of light energy to pass through it but cannot be seen through is referred to as
A. opaque
B. reflective C. translucent D. transparent

40. The leads of the transistor responsible for activation is the
A. amplifier
B. base
C. collector
D. emitter.

41. Which of the following types of teeth is used by mammals to tear food material?
A. Canines
B. Incisors
C. Molars
D. Premolars

42. The eclipse formed when the moon comes between the sun and the earth is known as
A. annular eclipse
B. lunar eclipse
C. solar eclipse
D. total eclipse

43. The element with the chemical symbol S is
A. silicon
B. silver
C. sodium
D. sulphur

44. The term leaching in soils refers to
A. accumulation of organic matter
B. decomposition of plant material.
C. fixation of nitrogen
D. removal of soil nutrients by water.

45. Which of the following statements about a plant cell is correct? It
A. does not have a nucleus
B. contains large vacuoles
C. is surrounded by the cell membrane only
D. does not have a definite shape

46. An example of a derived quantity is
A. length
B. mass
C. temperature
D. volume

47. Solid non-metals normally break into pieces when hammered because they are
A. brittle
B. ductile
C. lustrous
D. malleable

48. Young rabbits are called
A. bunnies
B. cubs
C. fingerlings
D. kids

49. Producers in an ecosystem are plants that
A. attract insects
B. feed on other plants
C. feed on dead materials
D. manufacture their own food.

50. The form of energy produced from the nucleus of an atom is termed
A. chemical energy
B. mechanical energy
C. nuclear energy
D. thermal energy

51. Which of the following elements is a semi-metal?
A. Carbon
B. Nitrogen
C. Silicon
D. Sodium

52. A system of farming that leads to continuous destruction of virgin forest is
A. mixed farming
B. mixed cropping
C. pastoral farming
D. shifting farming

53. The by-products of respiration are
A. carbon dioxide and heat
B. carbon dioxide and water
C. oxygen and heat
D. oxygen and water.

54. Which of the following statements about a force are correct? It
I is measured in newtons
II is measured in newton-metre
III can start a motion
IV can change the direction of a moving body.

A. I and II only
B. I and III only
C. I, III and IV only
D. I, II, III and IV

55. Which of the following substances is a solid-gas mixture?
A. Lather
B. Bronze
C. Steel
D. Smoke

56. Weeds on a school farm could be controlled by
A. handpicking
B. mowing
C. ploughing
D. tilling

57. An example of a non-living tissue used in osmosis experiment is
A. cellophane
B. filter paper
C. potato
D. polythene

58. Kerosene is poured on the surface of a pond in order to
A. make it unsafe for human consumption
B. make it safe for animal consumption
C. increase the surface tension
D. break the surface tension

59. Which of the following processes is used to separate insoluble solids from liquids?
A. Crystallization
B. Evaporation
C. Filtration
D. Sublimation

60. The process of removing unproductive poultry birds from a flock is referred to as
A. candling
B. culling
C. dehorning
D. drenching

61. Which of the following pairs of diseases can be spread easily when food is exposed to houseflies?
A. Dysentery and malaria
B. Malaria and tuberculosis
C. Dysentery and cholera
D. Cholera and tuberculosis

62. The pressure in fluids
A. acts differently in all directions
B. acts upwards at any point
C. decreases with depth
D. increases with depth

63. Which of the following processes involve a change in the state of matter from liquid to solid?
A. Beans
B. Bread
C. Cabbage
D. Egg

64. Which of the following food items contains the highest amount of dietary fibre?
A. Beans
B. Bread
C. Cabbage
D. Egg

65. An example of a disease vector is
A. earthworm
B. liver fluke
C. tapeworm
D. tick

66. Which of the following devices is made of semiconductor?
A. Capacitor
B. Inductor
C. Resistor
D. Transistor

67. Which of the following statements about the properties of water are correct? It
I. is colourless and tasteless
II. is neutral to litmus paper
III. turns red litmus paper blue
IV. is a universal solvent

A. I and II only
B. I and III only
C. I, II and IV only
D. I, III and IV only

68. The study of the soil profile of an area helps the farmer to
A. control weed growth
B. determine the soil temperature
C. determine the types of crop to grow.
D. know the pesticides to use.

69. When a green leaf is placed in a test tube containing ethanol and heated over a water bath the leaf
A. becomes soft
B. changes colour to brown
C. changes colour to blue-black
D. is decolourized.

70. Which of the following sources of energy is / are renewable?
I. Solar
II. Crude oil
III. Wind

A. I only
B. I and II only
C. I and III only
D. I, II and III

71. Which of the following substances is a compound?
A. Hydrogen
B. Nitrogen
C. Oxygen
D. Water

72. A disease-causing organism that is most difficult to control in crop production is
A. bacterium
B. fungus
C. nematode
D. virus

73. Which of the following organisms is/ are multicellular?
I. Amoeba
II. Paramecium
III. Onion

A. I only
B. III only
C. I and III only
D. II and III only

74. In electronic circuits, LEDs are used to indicate the absence or presence of
A. emitter and collector
B. electric current
C. p-n junction
D. voltage source.

75. Steel is an alloy of iron and
A. aluminium
B. carbon
C. silicon
D. gold

76. Soil aeration could be improved through
A. mulching
B. irrigation
C. soil drainage
D. fertilizer application

77. Which of the following pairs of structures are part of the respiratory system of humans?
A. Fallopian tube and alveoli
B. Pharynx and oesophagus
C. Trachea and alveoli
D. Trachea and duodenum

78. Which of the following effects is not a result of illegal connection of electricity? It can
A. lead to fire outbreak
B. lead to frequent power cut-off
C. increase the flow of current in the supply chain.
D. cause damage to electrical appliance

79. Which of the following statements about the scientific method is / are correct? It provides
I. logical procedure for arriving at knowledge.
II. knowledge that can be verified
III. knowledge that can never be changed

A. I only
B. I and II only
C. I and III only
D. II and III only

80. An entrepreneur’s decision as to what to produce is a/ an
A. co-ordinating function
B. organizing function
C. planning function
D. supervising function.

81. An example of a third class lever is
A. wheelbarrow
B. sugar tongs
C. pair of scissors
D. crowbar

82. The release of a mature egg from an ovary into the fallopian tube in humans is called
A. copulation
B. ejaculation
C. menstruation
D. ovulation

83. The blood vessel that carries oxygenated blood from the lungs to the heart is known as
A. pulmonary artery
B. pulmonary vein
C. vena cava
D. aorta

84. An example of a plant micro-nutrient is
A. calcium
B. copper
C. magnesium
D. potassium

85. What is the colour of the neutral wire in a three-pin plug?
A. Blue
B. Brown
C. Green
D. Yellow

86. In the pin-hole camera, the image formed is always
A. erect and bright
B. erect and blurred
C. inverted and real
D. inverted and virtual

87. The part of the flower that develops into a fruit is the
A. ovary
B. ovule
C. stamen
D. style

88. The number of elements in the compound Ca(OH)2 is
A. 2
B. 3
C. 4
D. 5

89. The reason why alum is added to water during treatment is to
A. kill germs
B. give taste to water
C. make water colourless
D. make suspended particles settle

90. Which of the following animal parasites could be controlled by hand picking?
A. Liver fluke
B. Tapeworm
C. Tick
D. Roundworm

91. A stick which is partially immersed in water appeared to be bent due to
A. absorption
B. reflection
C. refraction
D. transmission

92. One difference between metals and non-metals is that metals
A. have low density
B. are not malleable
C. have luster
D. have low melting points.

93. The cultivation of different crops on different plots of a farmland in a definite cycle is called
A. land rotation
B. shifting cultivation
C. crop rotation
D. mixed cropping

94. Iodine deficiency in humans could result in a disorder known as
A. diabetes
B. goiter
C. kwashiorkor
D. scurvy

95. A substance is termed combustible if it

A. easily catches fire
B. dissolves common salt
C. sublimes at room temperature
D. boils at 100°C.

96. Micro-organisms that cause diseases are collectively called
A. bacteria
B. infections
C. pathogens
D. viruses

97. Which type of energy is lost when sweat evaporates from the human body?
A. Sound energy
B. Mechanical energy
C. Chemical energy
D. Heat energy

98. Which of the following gases is involved in the rusting of iron?
A. Hydrogen
B. Oxygen
C. Nitrogen
D. Carbon dioxide

99. The feeling of soil between fingers is used to determine the
A. texture of the soil
B. drainage of the soil
C. capillarity of the soil
D. water holding capacity of the soil.

100. Sodium hydroxide is an example of a base because it
A. has sour taste
B. has a pH less than 7
C. turns wet blue litmus paper red
D. turns wet red litmus paper blue

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ANSWERS

1. C. N.

2. C.ratio in which the elements are combined

3. D.Respiration

4. A.horizon

5. B.no current flows from the p-type to the n-type

6. A.filtrate

7. D.Melting

8. A.Crop rotation

9. C. rickets

10. D.receiver lead

11. A.Aphids

12. D.spinal cord and nerves

13. D.virtual

14. C.II and III only

15. A. one p-n junction is forward biased and the other is reversed biased

16. B.when an infected person coughs openly into the air

17. D. lubricate the engine parts

18. A. cocoa

19. C.overcome friction

20. D. I,II and III

21. C. Glow worm

22. D. I,III and IV only

23. C.entrepreneurship

24. C.neutron

25. D. Identification

26. A. blurred

27. B.do not react with atmospheric oxygen

28. C.manufacture their own food

29. A.biological control method

30. D.2 and 3

31. B.fuse

32. C.provision of machinery

33. D.I,II,III and IV

34. A.Compost

35. D.sodium chloride and water

36. B.brown

37. B.iron

38. C.9 months

39. C.translucent

40. B.base

41. A. canines
42. C. solar eclipse
43. D. sulphur
44. D. removal of soil nutrients by water
45. B. contains large vacuoles
46. D. volume
47. A. brittle
48. A. bunnies
49. D. manufacture their own food
50. C. nuclear energy
51. C. silicon
52. D. shifting farming
53. B. carbon dioxide and water
54. C. I, III and IV only
55. D. smoke
56. A. handpicking
57. A. cellophane
58. D. break the surface tension
59. C. filtration
60. B. culling
61. C. Dysentery and cholera
62. D. increases with depth
63. B. freezing
64. A. Beans
65. D. tick
66. D. Transistor
67. C. I, II and IV only
68. C. determine the types of crop to grow
69. D. decolourized
70. C. I and III only
71. D. water
72. A. Bacterium
73. B. III only
74. B. electric current
75. B. carbon
76. D. fertilizer application
77. C. trachea and alveoli
78. C. increase the flow of current in the supply chain
79. B. I and II only
80. C. planning function
81. B. sugar tongs
82. D. ovulation
83. B. pulmonary vein
84. B. copper
85. A. Blue
86. C. inverted and real
87. A. ovary
88. B. 3
89. D. make suspended particles settle
90. C. Tick
91. C. refraction
92. C. have luster
93. C. crop rotation
94. B. goiter
95. A. easily catches fire
96. C. pathogens
97. D. Heat energy
98. B. Oxygen
99. A. texture of the soil
100. D. turns wet red litmus paper blue

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