Lagos State Examination Board Basic Education Certificate Examination JSS 3 BECE 2024

INSTRUCTION: ANSWER ALL QUESTIONS

BASIC SCIENCE AND TECHNOLOGY (OBJECTIVE)

1. In a group discussion, students were asked to compare an acid with a base. They concluded that _____.

a. both taste sour

b. both taste bitter

c. both undergo neutralization reaction

d. both have same appearance

 

2. Neutron exists in the atomic nucleus. One other component that also exists in the nucleus is _____.

a. an electron

b. an atom

c. a proton

d. alpha particle

 

3. The key to a classroom was discovered to have changed colour from silver to brown which indicates that rusting has taken place. How can this have been prevented?

a. heating

b. applying grease

c. applying petrol

d. watering it

 

4. The following are the content of the air we breathe in around us EXCEPT _____.

a. hydrogen

c nitrogen

b. oxygen

d. noble gases

 

5. When two atoms of hydrogen react with one atom of oxygen to form water, the water represents _____ in the equation.

a. reactant

b. product

c. precipitate

d. none of the above

 

6. The diagram below shows _____.

a. chemical solution

c. electrodes

B. cell

d. circuit

 

7. Elements and compounds can be represented by symbols. Choose one that represents an element from the options below:

a. NaCl

b. H₂

c. H₂O

d. CaCO

 

8. All matter has a building block which is made up of _____.

a. symbol

b. element

c. atom

d. iron

 

9. The joints found in your elbows, fingers, and knees are examples of which joint?

a. sliding joint

b. ball and socket joint

c. hinge joint

d. pivot joint

 

10. Victor touched a hot pot and quickly withdrew his hand. The stimulus is transferred from the receptor muscle to the central nervous system through the _____.

a. motor neurons

b. effector muscles

c dendrites

d. sensory neurons

 

11. Above are fluids in the body; that produce the fluid that transmits HIV using the numbers.

I. Blood

II. Sement

III. Tears

IV. Saliva

 

a. I, II, IV, III

b. I only

c. I, II, IV

d. II only

 

12. An organ that works like a pumping machine in the body is the _____.

a. intestine

b. pancras

c. heart

d. liver

 

13. A monkey cannot be enrolled in a school, unlike humans who learn in schools. The major difference between monkey and human that enables man to attend school is they _____.

a. possess big bones

b. possess nails and not claws

c. possess the largest brain

d. possess eyes in front to see

 

14. The first person to prove that pea plants have certain traits that come in pairs is _____.

a. Albert Einstein

b. Gregor Mendel

c. Charles Francis

d. Karl Benz

 

15. Rearrange the following to illustrate the organization of life.

I. Tissue

II. Cell

III. System

IV. Organ

V. Organization

 

a. I, II, III, IV, V

b. II, I, IV, III, V

c. I, II, IV, V, III

d. II, III, I, IV, V

 

16. The absence of rain for a long period of time occurs in the Northern part of Nigeria; this causes _____.

a. erosion

b. flooding

c. desertification

d. bush burning

 

17. A particular species of plant produces light non-sticky pollen in large numbers and its stigma is long with feathers. This modification facilitates pollination by _____.

a. insect

c. wind

b. water

d. animal

 

18. In digesting food, the pounded yam eaten by Josiah moves from the mouth to the oesophagus, then to the _____.

a. stomach

b. small intestine

c. large intestine

d. mouth

 

19. Victor can jump, walk, swim, eat, skip, and hop using his _____.

a. brain and heart

b. bones and muscles

c. hands and legs

d. lungs and kidney

 

20. The diagram shows which property of light?

a. reflection

b. refraction

c. dispersion

d. vision

 

21. Benjamin puts on the generator in his house at 7pm. The generator converts _____ energy to electrical energy.

a. wind

b. absord

c. chemical

b. potential

 

22. We see objects mainly because they _____.

a. bend light

b. absord light

c. reflect light

d. transmit light

 

23. The earth is similar to a magnet in operation because _____.

a. they both have oceans and land

b. they are made up of metals

c. they both have North and South poles

d. they both have force of attraction.

 

24. The order through which sound travels through our ear to our brain is _____.

I. Pinna

II. Auditory nerve

III. Eardrums

IV. Cochlear

V. Ossicles

 

a. I, III, V, IV and II

b. I, II, III, IV and V

c. I, IV, I, III and V

d. V, III, II, I and IV

 

25. Two cans containing equal amounts of water were placed in the sun for hours. Can A is silver coloured and can B is painted black. The first water to get hot is _____.

a. silver can

b. black can

c. silver and black can at the same time

d. neither

 

 

26. The structure below represents an element. Calculate the number of protons in the element.

a. 18

c. 7

b. 17

d. 12

 

27. The structure below represents an element. Calculate the number of neutrons in the element.

 

 

 

 

 

a. 21

b. 10

c. 12

d. 7

 

28. When you hit a metal tank, sound travels a longer distance through it. Justify the reason,

a. because the particles are loosely bonded.

b. because the particles are tightly packed.

c. because the particles are spread out.

d. because the particles are near.

 

29. Daniel boiled water in an electric kettle, the water became hot by _____ process.

a. conduction

c. convention

b. convection

d. radiation

 

30. A magnet attracts objects to itself but not all objects are attracted. The type of material a magnet attracts or pulls is _____.

a. carbon

c. metal

b. plastic

d. sulphur

 

31. Corrective maintenance can also be referred to as _____.

a. proactive method

b. projection method

c. rejection method

d. reactive method

 

32. Which of the following is an impelling tool?

a. sliding bevel

b. hammer

c. bradawl

d. clamps

 

33. The production manager of a rubber processing company ordered that sulphur should be heated with raw rubber to make their products stronger and more durable. He called the process _____.

a. dehydration

b. sulphurisation

c. vulcanisation

d. duralization

 

34. When a tree is cut down, both the internal and external parts are exposed and one of the internal parts is the _____.

a leaves

b. trunk

c. stem

d. sapwood

 

35. The two types of current are, and _____.

a. alternating and direct

b. batteries and cells

c. current and voltage

d. direct and indirect

 

36. Metals that shine when polished have the property.

a. ductility

c. malleable

b. lustre

d. shining

 

37. Which of the following is a source of alternating current?

a. primary cells

b. secondary cells

c. generator

d. inverter

 

38. Which of the following is NOT a triangle?

b. equilateral

d. isosceles

a. scalene

c. reflex

 

39. The radius of a circle is x cm. What is its diameter?

a. x cm

c. 3x cm

b. 2x cm

d. 4x cm

 

40. A regular polygon is identified by _____.

a. appearance

b. uniformity of its sides

c. number of sides

d. value of the angles

 

41. A good advantage of a pneumatic system over a hydraulic is; it’s _____.

a. complex operating system.

b. simplicity and reliability

c. expensiveness

d. all of the above

 

42. A good example of the application of rack and pinion is seen in a/an _____.

a. elevator

c. railway

b. aerospace

d. automobile

 

43. The major advantage of chain drives over belt drives is _____.

a. they have low maintenance cost

b. they do not require parallel shaft

c. they can withstand excess load

d. they are simple to use

 

44. A mining industry dug out iron ore and sent it for processing in a metallurgical industry. Which of the following furnaces will be first used to separate the iron ore from impurities?

a. bessemer

c. cupola

b. blast

d. open hearth

 

45. Which of the following is not a good property of ceramics?

a. they do not resist heat and weather

b. they have high melting point

c. they are very brittle

d. they have low thermal expansion

 

46. Which of the following is the next stage after setting-out?

a. foundation

b. site clearing

c. flooring

d. excavation

 

47. A drawing at a scale of 1 : 25 means that the object is _____.

a. 25 times smaller than the real object

b. 25 times bigger than the real object

c. 25 times bigger than the size of the paper

d. 25 times smaller than the size of the paper

 

48. Orthographic projection is regarded as working drawing because _____.

a. it is a pictorial representation of an object.

b. it visually represents three – dimensional objects.

c. it reflects objects in several two – dimensional views.

d. it reflects the object from multiple angles

 

49. The major difference between isometric and oblique drawing is that oblique drawing has _____.

a. more focuses on the front side of the object

b. its angles of projection at 1200

c. more focuses on the edge of the object

d. three-dimensional views

 

50. A group of students were arguing over the following combinations of careers in engineering and technology, who among them was wrong?

a. Soft work development, metallurgical and sociology

b. Mechanical engineering, information technology and electrical work

c. Data science, civil engineering and mining

d. Petroleum engineering, architecture, and automobile.

 

51. Godwin Luck happens to win the toss for the tennis game and begins the game by putting the ball to play. Berry is the while his opponent is _____.

a. player and returner

b. server and returner

c. sender, receiver

d. server, receiver

 

52. The collection of supplies and equipment that is used to give medical treatment is called _____.

a. first box

c. first aid box

b. first materials

d. first equipment

 

53. A healthy school environment promotes the following EXCEPT _____.

a. organization of healthy school day

b. provision of safe and healthy environment

c. provision of positive relationships among students

d. rivalry among teachers

 

54. The proper grip for a forehand shot in tennis is known as the _____.

a. eastern

B. western

c. continental

d. bend

 

55. During a match, it’s essential to maintain proper _____ to conserve energy and read quickly to the opponent’s shots.

a. nutrition

c. energy

b. hydration

d. footwork

 

56. One of these gymnastics activities can be performed without apparatus.

a. astride vault

b. backward roll

c. hanging bat

d. rope walt

 

57. When a served ball touches the net and drops at the server’s side of the table, it is _____.

a. let

C. toss

b. point

d. deuce

 

58. A team must not hit the ball beyond _____ times before passing it to an opponent court in a volleyball game.

a. 2

c. 3

b. 4

d. 5

 

59. A player throws a racket at the ball and it hits the net before landing in an opponent’s court. The ball is called _____.

a. net

b. out

c. let

d. point

 

60. Water is known as a basic necessity that sustains all life. Which one of these is preferable to be used for human consumption?

a. man-made sources of water

b. natural sources of water

c. artificial sources of water

d. water from the surface of the earth

 

61. The below diagram is a pitch for a field event called _____.

a. discus

b. shot put

c. javelin

d. hammer

 

62. Physical education is the integral part of education that develops learners’ overall health through selected physical activities with all these as its objectives EXCEPT _____.

a. physical development

b. social development

c. performance development

d. mental development

 

63. In jumping events, we have the long jump which has 2 commands “step and jump” while triple has _____.

a. run, jump, and triple

b. step, hop and jump

c. run, step, and jump

d. run, triple and jump

 

64. The Yoruba cultural dance can be categorised under which classes of

dance?

a. social dance

b. modern dance

cfolk or traditional dance

d. locality dance

 

65. The Physical Fitness training that involves a series of exercises arranged into different stations which performers engage in from one station to another is _____.

a circuit training

b. interval training

c. weight training

d. isometric training

 

66. The act of striking the ball with the face of the stick to make it move to a long distance in a hockey game is _____.

a. drive

b. scooping

c. hitting

d. passing

 

67. The athletic activity involving an athlete performing some track and field events to test his/her all-round ability is _____.

a. athletic competition

b. inter-house competition

c. combined or group competition

d. track and field competition

 

68. When the body takes in food and utilizes it properly, it is known as _____.

a. feeding

b. feed

c. nutrition

d. nitrogen

 

69. When two players pass the ball (egg) to one another in a tennis game for a long period nonstop, it is called _____ tennis terminology.

a. rally

b. stroke

c. volley

d. spin

 

70. If Physical Education is aimed at improving the physical, mental, emotional and social aspects of an individual, then Health Education is an activity that _____ of an individual.

a. develops academic performance aspect

b. improves attitude aspect

c. improves growth aspect

d. improves health aspect

 

71. Which of the following best describes a search engine?

a. Program used to create spreedsheets.

b. A tool used to browse social media websites.

c. A systown that helps users to find information.

d. A software for editing images.

 

72. Multidirectional keys on the keyboard are also known as _____.

a. arrow keys

b. function keys

c. shift keys

d. special keys

 

73. BCC in email context stands for _____.

a. blank carbon copy

b. bulk carbon copy

c. blind carbon copy

d backup carbon copy

 

14. GUI stands for _____.

a. grand user interface

b. graphic user interface

c. graphical user interface

d. general user interface

 

75. The primary function of a search engine is _____.

a. to send emails

b. to store files

c. to organize web pages

d. to find and retrieve information from the internet

 

76. The loud ringtone of a mobile phone device causes the following EXCEPT _____.

a. hearing impairment

b. headache

c. ear pain

d. sore eyes

 

77. ENIAC was the first _____.

a. electromechanical computer

b computer with electronic circuits

c. electronic computers

d. microcomputer

 

78. Search engines generate search results by _____.

a. randomly selecting web pages

b. analyzing website traffic

c. Indexing and ranking web pages based on relevance

d. displaying paid advertisements only

 

79. The Pascals machine was made by _____.

a. von heibniz

b. charles pascal

c. John napler

d. blaise Pascal

 

80. Malicious programs that infect a computer are _____.

a. virus

b. threat

c. program

d. worm

 

81. Which of the following is NOT a popular search engine?

a. google

b. facebook

c. bing

d. yahoo

 

82. Games such as flight simulations are played using _____.

a. mouse

b. light pen

c. joystick

d. keyboard

 

83. An embedded computer can be found in a _____.

a. washing machine

b. laptop

c. desktop

d. notebook

 

84. When an image is copied, it goes to the _____ first.

a. clip art

b. clip board

c. my document

d. recycle bin

 

85. A standard QWERTY keyboard contains _____ keys.

a. 96

b. 104

c. 108

d. 116

 

86. The location of a group of files is decided by the _____.

a. folder

b. graphic

c. word

d. excel

 

87. The _____ responsible for performing arithmetic and logical operations in CPU.

a. control unit

b. arithmetic logic unit (ALU)

c. registers

d. cache memory

 

88. Sizes and designs of letters in a document are called _____.

a. fonts

b. bullets

c. indent

d. align

 

89. The default orientation for a word processing document is _____.

a. landscape

b. portrait

c. legal

d. A4

 

90. The _____ of a CPU stores temporary data and instructions needed.

a. control unit (CU)

b. arithmetic logic unit (ALU)

c. registrars

d. cache memory

 

ALTERNATIVE TO PRACTICAL

91. When a boy eats cooked yam, the food is acted upon and changed to _____. The enzyme in the month that acts on the food is called _____. The absorption of this food actually takes place in the _____ of the small intestine.

a. glucose, ptyalin, stomach

b. glucose, pepsin, mouth

c. maltose. ptyalin, ileum

d. lactose, saliva, ileum

 

92. Identify the tongue with no defect in the following with the help of these shapes representing the food.

 

 

 

 

 

 

93. Examine these pictorial specimens below: Aircraft, Car, Gas Cylinder, Ship, Tarred, Road, Lorry

✈️ Aircraft

🚗 Car

🛢️Chemical Drum

🛥️ Ship

🛣️ Tarred Road

🚛 Lorry

 

With the use of fractional distillation method, dentify and arrange the extracted products of the crude oil that will be needed for them to unction or be utilized.

a. Tarred-road, ship, lorry, aircraft, chemical drum, car, gas-cylinder

b. Gas-cylinder, chemical drum, lorry, aircraft, car, tarred-road, ship

c. Chemical drum, gas cylinder, aircraft, car, lorry, ship, tarred road

d. Gas gylinder, car, chemical drum, aircraft, lorry, ship, tarred road.

 

94. Chain drive in a machine consists of a metal roller chain placed over two of more sprocket gears in which the application can be found in _____.

a. forklifts, bicycles, motor-bikes

b. forklifts, grinding machines, bicycles

c. drill press, motor-bikes, bicycles

d. motor-bikes, water pumps, generators

 

95. When a moving car has a flat tyre, the hydraulic machine to use to deliver a greater force in lifting the car is _____ and _____ are wheels in a drive system in which various speeds can be easily selected.

a. car brake, gear

b. bottle jack, gear

c. wind turbine, turtle

d. nozzle, speedometer

 

96. _____ is used in radioactivity, electric switches and Jewelry. _____ is used in air-conditioning systems and electric cables. _____ is used in terminals of batteries. _____ is used in manufacturing of

aircraft frame.

a. lead, aluminum, carbon, iron

b. aluminium, copper, lead, silver

c. silver, aluminium, carbon, iron

d. silver, copper, lead, aluminium

 

97. The triple jump phases in a field event are _____.

a. approach run-up, flight, jump, hop, step and land

b. hop, approach run-up, step, jump, flight and land

c approach run-up, hop, step, flight, jump and land

d. step, approach run-up, hop, jump, flight and land

 

98. A player in a table-tennis game scores a great point in one of the statements below.

a. If a player strikes the ball out of sequence in a double game

b. If the ball bounces once on his own side of the table and strikes the ball on the opponent’s table.

c. If the ball bounces more than once on his own side of the table and plays the ball to the opponent table.

d. If a player strikes the ball before it has bounced on his own side of the table

 

99. _____ is the combination of digits that a system of counting uses to represent numbers, while uses only two (2) digits symbol and uses eight (8) digits symbol.

a. Number base, octal number system and binary number

b. Number base, binary number and octal number system

c. Octal number system, binary number and number base

d. Binary number, number base and octal number system.

 

100. COBOL, JAVA are examples of _____ languages in programming, while most operating systems and systems software are written in _____ and machine language deals with _____.

a. low level, high level, binary number

b. binary numbers, low level language and high level

c. high level, binary numbers and low level language

d. high level, low level language, binary numbers