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

  1. 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
  2. 22N/m2 D. 215N/m2
  3. The basic raw material for processing metal is called ________ A. Cast Iron Pig iron  C. Iron ore  D. Alloy
  4. 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
  5. The following are wiring tools EXCEPT ____ A. Hammer Cables
  6. Screwdriver D. Tester
  7. The basic raw material for processing metal is called ________ A. Cast iron Pig iron  C. Iron ore  D. Alloy
  8. In the production of pig iron the charge that reduces impurities is referred to as ______ A. Flux Coke    C. Limestone   D. Ore
  9. The process of converting a metallic ore to metal is called _____
  10. Vulcanization B. Smelting C. Fluxing  D. Oxidize
  11. The major difference between pig-iron and steel is their ____ content Oxygen  B. Limestone  C. Carton  D. Sulphur
  12. One of the following is a typical application of a wrought iron A. Spoon Crane hooks  C. Engine  block  D. Zinc
  13. All of the following are methods of processing a plastic EXCEPT ____ A. Extrusion Calendering   C. Plating  D. Vacuum forming
  14. The basic raw material for producing plastics is from _____ A. Latex
  15. Petroleum C. Ore D. Fillers
  16. A furnace for baking ceramics is called ____ A. Kiln Bellow
  17. Oven D. Drench
  18. The following are natural defects on timber EXCEPT ____ A. Knots
  19. Shakes C. Cross-grains D. Cup

  1. The wood defects shown above is a good example of a _____ A. Warp Shakes  C. Cross  D. Knots
  2. What is the percentage moisture content of timber which weights 120gms before drying and 80gms after drying A. 50% 92%
  3. 100% D. 75%
  4. Wood processing involves the following methods EXCEPT ________
  5. Felling B. Conversion C. Smelting  D. seasoning
  6. Which of the following is NOT a wood preservative A. Bow
  7. Creostote C. Sodium D. Phenol
  8. Which of the following manufactured boards is used for making cupboards Plywood  B. Particle board  C. Block board  D. Fibre board
  9. The first material gotten out from ore after removing impurities is called ____ A. Steel Pig Iron  C. Cast iron  D. Wrought
  10. Methods of processing steel is includes the following EXCEPT ____
  11. Open hearth B. Electric C. Smelting  D. Bessemer
  12. Which made of metal does Bessemer converter produce A. Pig iron
  13. Steel C. Wrought iron  D. Cast iron
  14. Materials in which the electrons are not free to move are called
  15. current B. Insulators C. Resistors   D. Conductors
  16. Reducing the moisture content in a sawn timber is a method known as ____ A. Moisture reduction  Seasoning   C. Conversion
  17. Moisture removal
  18. The group of metal that has no iron content and are not magnetic is called ____ A. Non-ferrous B. Ferrous Alloys  D. Ferrous alloy
  19. A process of drawing without the use of any drawing instrument except pencil only is called _____ A. Perspective Scale  C. Freehand  D. Isometric
  20. In the figure below, what is the value of angle B.

  1. 300 B. 1500 C. 1200  D. 920
  2. Deciduous trees are identified by one of their following features EXCEPT ____ A. The flowers Broad leaves  C. Exposed seeds
  3. Keep leaves seasonally
  4. In the figure below, line AO is ____ to line BC. A. Adjacent  Inclined  C. Perpendicular  D. parallel
  5. Heptagon is bounded by ____ lines A. 10 7  C. 9  D. 6
  6. Economic activities in technology include the following EXCEPT____
  7. Transportation B. Communication C. Food Preservation  D. Bush burning
  8. The diagram below is used for ___________

  1. Boring Driving  C. Holding  D. Measuring

  1. A rainboot is an application of what material? A. Ceramics Rubber  C. Plastic  D. Wood
  2. The following tools are used for setting out building before construction EXCEPT _____ A. Pegs    Belt  C. Lines  D. Tapes
  3. 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
  4. Identify the most suitable metal for making electric wire A. Bronze
  5. Copper C. High carbon steel D. Mild steel
  6. The symbol shown below is ________

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

  1. 150 B. 300 C. 600  D. 1300

  1. Ceramics are used as electrical insulation materials because they
  2. Are not affected by chemical B. Can withstand heavy load C. Are poor concoctors of electricity  D. Can easily break
The hand tool drawn is basically used for _____ A. packaging  B. Rendering C. mixing  D. Filling

 

 

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  1. To ensure safety in filing operation in the workshop, the work piece should be secure with a ______A. Bench stop Plier   C. Clamp
  2. Vice
  3. A girl drawing water from the well is an example of ________
  4. Power B. Work C. Energy  D. Force
  5. 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
  6. The system that convert voltage from one value to another is referred to as _______ A. insulator Transformer   C. Transmission line
  7. Control panel
  8. The horizontal force that tends to push a moving object forward is called _______ A. Lift Drag  C. Thrust   D. Weight
  9. 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.

 

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