Basic Technology Examination Question for Junior Secondary School Students (JSS2)

Basic Technology Examination Question for Junior Secondary School Students (JSS2)

CLASS: JSS2       SUBJECT:  Basic Technology      TIME: 2 ½HOURS

Instructions:        Answer  all questions in SECTION A and FIVE questions in SECTION B. marks will be awarded to neatness in draftsmanship . Each question in Section A is followed by four options, choose the correct option for each question and shade the correct answer corresponding to the option you have chosen in your answer sheet. 

SECTION A:

OBJECTIVES TEST

1. Electricity is transmitted in Nigeria at a low frequency of ________
2. 100HZ B. 50HZ C. 72HZ   D. 125HZ
3. Electricity transmission station that generates its power through burning natural gas in Nigeria is called _____ A. Oji Kainji  C. Afam  D. Briggs
4. In the diagram below receiving antenna is labeled as ____ A. P Q  C. R  D. S

4. Calculate the pressure required to pump water out from a reservoir of 20 litres when a force of 600N is applied A. 30N/m² 72N/m²
5. 22N/m² D. 215N/m²
6. The basic raw material for processing metal is called ________ A. Cast Iron Pig iron  C. Iron ore  D. Alloy
7. Device used for measuring the quantity of electricity consumed in a building is called _____ A. Sockets Earthing unit  C. Watt-hour meter  D. Distribution box
8. The following are wiring tools EXCEPT ____ A. Hammer Cables
9. Screwdriver D. Tester
10. The basic raw material for processing metal is called ________ A. Cast iron Pig iron  C. Iron ore  D. Alloy
11. In the production of pig iron the charge that reduces impurities is referred to as ______ A. Flux Coke    C. Limestone   D. Ore
12. The process of converting a metallic ore to metal is called _____
13. Vulcanization B. Smelting C. Fluxing  D. Oxidize
14. The major difference between pig-iron and steel is their ____ content Oxygen  B. Limestone  C. Carton  D. Sulphur
15. One of the following is a typical application of a wrought iron A. Spoon Crane hooks  C. Engine  block  D. Zinc
16. All of the following are methods of processing a plastic EXCEPT ____ A. Extrusion Calendering   C. Plating  D. Vacuum forming
17. The basic raw material for producing plastics is from _____ A. Latex
18. Petroleum C. Ore D. Fillers
19. A furnace for baking ceramics is called ____ A. Kiln Bellow
20. Oven D. Drench
21. The following are natural defects on timber EXCEPT ____ A. Knots
22. Shakes C. Cross-grains D. Cup

17. The wood defects shown above is a good example of a _____ A. Warp Shakes  C. Cross  D. Knots
18. What is the percentage moisture content of timber which weights 120gms before drying and 80gms after drying A. 50% 92%
19. 100% D. 75%
20. Wood processing involves the following methods EXCEPT ________
21. Felling B. Conversion C. Smelting  D. seasoning
22. Which of the following is NOT a wood preservative A. Bow
23. Creostote C. Sodium D. Phenol
24. Which of the following manufactured boards is used for making cupboards Plywood  B. Particle board  C. Block board  D. Fibre board
25. The first material gotten out from ore after removing impurities is called ____ A. Steel Pig Iron  C. Cast iron  D. Wrought
26. Methods of processing steel is includes the following EXCEPT ____
27. Open hearth B. Electric C. Smelting  D. Bessemer
28. Which made of metal does Bessemer converter produce A. Pig iron
29. Steel C. Wrought iron  D. Cast iron
30. Materials in which the electrons are not free to move are called
31. current B. Insulators C. Resistors   D. Conductors
32. Reducing the moisture content in a sawn timber is a method known as ____ A. Moisture reduction  Seasoning   C. Conversion
33. Moisture removal
34. The group of metal that has no iron content and are not magnetic is called ____ A. Non-ferrous B. Ferrous Alloys  D. Ferrous alloy
35. A process of drawing without the use of any drawing instrument except pencil only is called _____ A. Perspective Scale  C. Freehand  D. Isometric
36. In the figure below, what is the value of angle B.

32. 30⁰ B. 150⁰ C. 120⁰  D. 92⁰
33. Deciduous trees are identified by one of their following features EXCEPT ____ A. The flowers Broad leaves  C. Exposed seeds
34. Keep leaves seasonally
35. In the figure below, line AO is ____ to line BC. A. Adjacent  Inclined  C. Perpendicular  D. parallel
36. Heptagon is bounded by ____ lines A. 10 7  C. 9  D. 6
37. Economic activities in technology include the following EXCEPT____
38. Transportation B. Communication C. Food Preservation  D. Bush burning
39. The diagram below is used for ___________

1. Boring Driving  C. Holding  D. Measuring

35. A rainboot is an application of what material? A. Ceramics Rubber  C. Plastic  D. Wood
36. The following tools are used for setting out building before construction EXCEPT _____ A. Pegs    Belt  C. Lines  D. Tapes
37. The commonly used distribution system in Nigeria is the A. 3 phase 4 – wire Single phase 2-wire  C. 3 phase 3 wire  D. Single 3 wire
38. Identify the most suitable metal for making electric wire A. Bronze
39. Copper C. High carbon steel D. Mild steel
40. The symbol shown below is ________

40. transformer B. Earth  C. Capacitor  D. Resistor
41. Highly developed technology makes use of the following EXCEPT ____ A. Mower ATM machine  C. Hoe  D. Grinding machine
42. The water level in a container above its supply outlet is referred to as _____ A. Height   Tank   C. Had   D. Main
43. In the construction below, if radius AB = BC and Q is ________

1. 15⁰ B. 30⁰ C. 60⁰  D. 130⁰

43. Ceramics are used as electrical insulation materials because they
44. Are not affected by chemical B. Can withstand heavy load C. Are poor concoctors of electricity  D. Can easily break

47. To ensure safety in filing operation in the workshop, the work piece should be secure with a ______A. Bench stop Plier   C. Clamp
48. Vice
49. A girl drawing water from the well is an example of ________
50. Power B. Work C. Energy  D. Force
51. The diagram above shows the elements of radio communication. The parts labeled X and Y represents _________A. Microphone and receiving aerial Transmitter and speaker  C. Radio receiver and transmitting aerial  D. Transmitter and radio receiver
52. The system that convert voltage from one value to another is referred to as _______ A. insulator Transformer   C. Transmission line
53. Control panel
54. The horizontal force that tends to push a moving object forward is called _______ A. Lift Drag  C. Thrust   D. Weight
55. In a transmitting system, the elements that selects signals and extract information out is referred to as _____ A. Loudspeaker Transmitter  C. Receiver   D. Microphone

SECTION B: THEORY

ANSWER FIVE QUESTIONS

1a.     Define the term transmission of electricity

1. Enumerate FOUR  components of a transmission system and their functions.

2a.     What is metal smelting?

1. Explain the production of a wrong iron?

3a.     Define the term Veneering

1. Mention THREE defects on timber that occurs naturally.

4a.     Define building technology

1. Mention SIX  building materials

5a.     List four distribution systems used by PHDC to electrical consumers in Nigeria

1. Differentiate between surface and conduit wiring

6a.     what is Pneumatics

1. Describe the principle of flight of an aeroplane.