JSS3 JUNIOR WAEC BASIC SCIENCE PAST QUESTIONS AND ANSWERS FOR 2023/2024

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JSS3 BECE Basic Science Practice Tests – Junior WAEC
Focus on Concentration Area
Assists you in determining your exam pace.
Predict how the next exam question will turn out.

Attempt all Question

You are advised to work completely on your own

INSTRUCTION: From the options lettered A-D, choose the word that is correctly used to fill in the blank spaces.

1. Radioactivity is spontaneous…. of the nuclei of some elements to give off radiation in the form of particles of rays.
A. aggregation
B. disintegration
C. formation
D. integration

2. Sound is produced by….
A. bright source of light.
B. stationary material objects with wide surfaces.
C. vibrating particles carrying electric charges.
D. vibrating surfaces of material objects.

3. Which of the following is NOT a types of skill?
A. Desktop publishing and networking
B. Farming
C. Internet browsing
D. Walking and crawling

4. Materials that do NOT allow electric current to pass through them are called electrical….
A. conductors.
B. insulators.
C. loads.
D. resistors.

5. Electricity is usually obtained from….
A. battery or cell.
B. electric light bulb.
C. electric motor
D. good electrical conductors.

6. The region around a magnet within which magnetic force of attraction or repulsion can be felt is called magnetic….
A. field.
B. flux.
C. polarity.
D. space.

7. The live wire in an electrical circuit is at a …. than the neutral wire.
A. equal potential
B. higher potential
C. lower potential
D. similar potential

8. Pollution is an example of….
A. right application of science.
B. wrong application of science.
C. both right and wrong application of science.
D. eating raw food at night.

9. Glass is made from one of the following solid materials.
A. Gold
B. Limestone
C. Sand
D. Salt

10. Agricultural use of land Include all the following EXCEPT….
A. animal farming.
B. crop farming.
C. farm settlements
D. road construction.

11. Which of the following is NOT an example of string instrument?
A. Trumpet
B. Harp
C. Violin
D. Viola

12. Which of these statement is NOT correct about | family trait?
A. Family traits could be dominant or recessive
B. Family traits are transmittable
C. Family traits are passed from one sibling to another
D. Family traits are use to trace siblings

13. Soil erosion can be defined as….
A. addition of humus to the soil.
B. addition of top soil.
C. it is the removal of the top soil.
D. it is the breaking of rocks.

14. Which of the following will not cause flooding?
A. Dam wall bursting
B. Planting crops in terraces
C. Strong winds in coastal areas
D. Rivers over flowing in flood plains

15. Deforestation is the process of ….
A. cutting down of forest and wood.
B. converting plants to sand.
C. inducing forest into trees.
D. planting grasses.

16. One drastic effect of deforestation on the environment is….
A. it increases the number of trees to grow.
B. it increases the growth of animals in forest.
C. it leads to extinction of animals and plants.
D. it provides shelter for hunters.

17. Desertification is formed when there is….
A. constant rainfall.
B. continuous sunlight.
C. continous hamattan
D. persistent rain failure.

18. The following are adverse effects of drug abuse EXCEPT…
A. depression.
B. damaged nostrils and lungs.
C. hallucination.
D. healing.

19. Which of those government organization apprehends drug carriers?
A. FEPA
B. LASTMA
C. NEMA
D. NDLEA

20. The following are example of fruits EXCEPT….
A. apple.
B. banana.
C. jute.
D. orange.

21. In order to live and grow well, the body needs….
A. balanced diet.
B. good posture.
C. regular make-up.
D. regular taking.

22. Deficiency in vitamin A causes _______.

(A) abnormal pains
(B) rickets
(C) night blindness
(D) weakness

23. The chemical formula for sodium hydroxide is _______.

(A) Na2OH
(B) NaOH
(C) Na2(OH)3
(D) Na3OH

24. The reaction between base and acid to produce salt and water is _______.

(A) decomposition
(B) dehydration
(C) displacement
(D) neutralization

25. A change in matter that results in a new substance formation is _______.

(A) chemical change
(B) mechanical change
(C) permanent change
(D) physical change

26. The process of covering metal to avoid corrosion is ______.

(A) electro carbon
(B) electro-coating
(C) electromagnetic
(D) electroplating

27. Which of these raw materials is used in the manufacture of cement?

(A) Bitumen
(B) Coal
(C) Darst
(D) Limestone

28. When the moon is far from the earth such that no region of the moon falls on the earth it results in ______.

(A) annular eclipse
(B) eclipse of the moon
(C) eclipse of the sun
(D) partial eclipse

29. The following properties are properties of pure water EXCEPT it ______.

(A) boils at 100°C
(B) freeze at 0°c
(C) has odor
(D) is colorless

30. The breakdown of food substances to release energy is referred to as ________.

(A) excretion
(B) irritability
(C) nutrition
(D) reproduction

31. Which of these vectors transmit the malaria parasite?

(A) Aedes mosquito
(B) Anopheles mosquito
(C) Blackfly
(D) Housefly

32. A habitat with a variety of trees is described as a _______.

(A) desert
(B) Forest
(C) grassland
(D) savanna

33. The transfer of pollen grains from the other anther to the stigma of a flower is referred to as a _______.

(A) copulation
(B) fertilization
(C) germination
(D) pollination

34. Which of the following features differentiates man from other primates?

(A) Ability to stand upright
(B) Ability to grasp objects
(C) Ability to solve a complex problem
(D) Presence of eyes in front of the head

35. Which of these materials is biodegradable?

(A) cans
(B)glasses
(C) irons
(D) papers

36. The color which is formed when iodine solution is added to starch is ______.

(A) blue-black
(B) brick-red
(C) green
(D) white

37. The benefits of technology are the following EXCEPT for ______.

(A) it makes agriculture more difficult
(B) it improves the standard of living
(C) it provides good shelter and security
(D) it makes people more creative

38. The following are the recent products of technology EXCEPT _______.

(A) Aeroplane
(B) computer
(C) G.S.M
(D) shelves for keeping office files

39. The process of drawing without the aid of any instrument is called _______.

(A) oblique
(B) isometric
(C) orthographic
(D) free hand

40. The process of water (moisture content) in wood is known as _______.

(A) wood preservation
(B) wood seasoning
(C) wood conversation
(D) wood production

41. The property of metals that makes them flow when they melt is regarded as ______.

(A) brittleness
(B) ductility
(C) conductivity
(D) malleability

42. The maintenance carried out on a piece of equipment to avoid its breakdown is ______.

(A) corrective maintenance
(B) deductive maintenance
(C) predictive maintenance
(D) preventive maintenance

43. A person skilled in the operations of lathe machines is called ______.

(A) machinist
(B) draftsman
(C) filter
(D) tinker
(E) welder

44. A polygon with nine sides is called _______.

(A) pentagon
(B) octagon
(C) nonagon
(D) decagon
(E) heptagon

45. When fuel is burnt, chemical energy is converted into ______.

(A) electrical
(B) solar
(C) mechanical
(D) light

46. Which of the following reduces friction?

(A) Rolling
(C) Bearing
(B) Sliding
(D) Lubrication

47. The following tools are used for site preparation EXCEPT for ______

(A) tilling drum
(B) spade
(C) shovel
(D) chain saw

48. How many degrees make a straight line?

(A) 120
(B) 36°
(C) 48°
(D) 180°

49. Which of the following instruments is used to transfer measurement from one point to another?

(A) A pair of compass
(B) A pair of dividers
(C) Protractor
(D) Set-square
(E) Scale rule

50. The following are types of woodwork joints EXCEPT for ______.

(A) bridle
(B) clots
(C) mortise
(D) tennon

Junior BECE WAEC Basic Science Objective Answers

1. B
2. D
3. D
4. B
5. A
6. A
7. B
8. B
9. C
10.D
11.A
12.C
13.C
14.C
15.A
16.C
17.B
18.D
19.D
20.C
21.A
22.C
23.B
24 C
25 A
26 D
27 D
28 B
29 C
30 C
31 B
32 D
33 D
34 A
35 D
36.A
37.A
38 D
39 D
40 B
41.C
42 A
43 A
44 C
45 D
46 D
47 A
48 A
49 A
50 A

Basic Science for JSS3 Essay Questions
SECTION B (THEORY)

INSTRUCTION: Answer all questions. All questions carry equal marks.
1. (a) Define energy.
(b) List four forms of energy.
(c) If an object of mass 12kg is moving at a velocity of 5m/s, calculate the kinetic energy.

2. (a) Define petrochemicals.
(b) Give three examples of the by-products of petrochemicals.
(c) Outline two important each of petrochemicals and crude oil in Nigeria.

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