Must Check Out : BDT – Pre-Tech Skills selected Questions & Answers, Get Ready for Tomorrow
Check Out : BDT – Pre-Tech Skills and Get Ready for Tomorrow
BASIC DESIGN AND TECHNOLOGY
(PRE-TECHNICAL SKILLS) 2 & 1
SECTION A: CORE SKILLS
Answer Question 1
[COMPLUSORY]
1. a. What is a balanced diet?
b. State the association in nature of the following colours.
i. White –
ii. Brown –
iii. Yellow –
c. Give four suitable packages for keeping liquid products.
d. State two weaknesses in household furniture.
e. Give three drawing tools suitable for drawing straight lines.
f. Draw a cube in oblique drawing.
i. List four (4) tools used in building the wall.
ii. Name the parts of the wall labeled Y and Z.
iii. State one reason for introducing a half-bat in the wall.
b. i. Name a suitable tool used in checking the height of the courses.
ii. Make a pictorial sketch of the tool named in (b) (i) above.
c. i. State in sequential order four steps involved in preparing mortar to raise the wall.
d. i. Differentiate between plumbing and leveling.
ii. List the materials for making sandcrete blocks.
iii. List two (2) tools for cutting blocks.
e. Mention four (4) uses of clay.
3. a. Figure 2 shows the isometric view of a wooden stand.
i. Draw full size the front view in the direction of arrow Z.
c. The figure below shows a sketch of a wood work joint.
i. Name the type of joint shown above.
ii. List three (3) tools used for constructing the joint.
d. Make a freehand pictorial sketch of a mallet used in the wood workshop.
e. State one reason of the following operations:
i. Using glass paper on work piece;
ii. Seasoning a piece wood;
iii. Applying polishes on wood.
4. a. Draw the plan of a cylindrical prism with a diameter of 50mm and divide
it into twelve equal parts.
b. i. What is soldering?
ii. List two (2) materials used for soft soldering.
iii. List four (4) tools used in sheet metal work.
iv. List two (2) examples of joints and seams used in sheet metal work.
c. i. State two (2) characteristics each of the following types of metals:
α) Ferrous metals;
β) Non-ferrous metals.
ii. State two (2) examples each of the types of metals listed above
d. i. What is a rivet?
ii. State two (2) uses of rivets.
iii. List two (2) examples of the following fasteners:
α) Rivets;
β) Screws;
δ) Nails.
Do all rough work on this question paper. Now answer the following questions
1. Which of the following is not a component of carbohydrate?
A. Cellulose
B. Sugar
C. Folate
D. Starch
2. …………is not a symptom of kwashiorkor.
A. Loss of height
B. Bulging stomach
C. Pale skin
D. Retarded growth
3. Whitish bubbles that appear on the surface of liquid foods indicating spoilage is known as …………
A. slimy
B. mould
C. enzyme
D. foam
4. Select the method of cooking that involves only one method of heat transfer.
A. Grilling
B. Steaming
C. Frying
D. Boiling
5. What is the position of a knife in relation to a plate in table setting?
A. left
B. right
C. middle
D. under
6. Which of the following is not a temporary stitch?
A. Basting
B. Thread marking
C. Tacking
D. Over sewing
7. Surfaces on which drawings are made are called drawing
A. supports
B. faces
C. formats
D. boards
8. Freshness and puberty are associated with the colour …………
A. red
B. green
C. violet
D. white
9. Animal tail and river suggest a
…………. in nature.
A. line
B. dot
C. shape
D. texture
10.The question ‘who will use the unit’ is considered under ……………
A. economics
B. materials
C. construction
D. ergonomics
11.The drawing below shows …………… drawing.
A. oblique
B. isometric
C. perspective
D. linear
12.A direct risk to a sewing industry is
A. poor worker attitude
B. fire outbreak
C. wrong location
D. high cost of sewing materials
13.Packaging of products is done mainly to
A. protect and preserve its content
B. attract good prices
C. attain high foreign exchange
D. promote the local market
14.Select the wet medium.
A. Pastel
B. Suede
C. Chalk
D. Crayon
15.Rice, okro and yam are cooked mainly to make them ……………
A. palatable
B. last long
C. edible
D. nutritious
16.A suitable metal for making the body of a G-clamp is ……………
A. medium carbon steel
B. mid steel
C. cast iron
D. low carbon steel
17.Soft solder is a mixture of ……………
A. copper and iiron
B. copper and zinc
C. lead and tin
D. zinc and tin
18.Polyvinyl acctate is a type of …………
A. finish
B. adhesive
C. abrasive
D. aggregate
Use the sketch in the figure below to answer questions 19 and 20.
19.Name the building tool shown in the figure below.
A. Measuring tape
B. Marking gauge
C. Building rope
D. Line and pin
20.What operation is the tool used for?
A. Setting out the main outlines of a building
B. Measuring length of a wall
C. Checking number of courses in a wall
D. Setting out the height of a wall
21.Which of these is not a cutting tool?
A. Bolster
B. Chisel
C. File
D. Scriber
22.Measuring to obtain the right proportion of sand and cement in a mortar mix is termed ……………
A. gauging
B. batching
C. leveling
D. weighing
23.The tool used to compact mortar into a mould box is called …………
A. shovel
B. trowel
C. tamping rod
D. wooden float
24.Saucepan handles are made from plastic known as ……………
A. bakelite
B. Perspex
C. nylon
D. poltviny chloride
25.Name the appropriate tool for
striking bolster.
A. Mallet
B. Crow bar
C. Club hammer
D. Cross-pein hammer
Use the operation in the figure below to answer questions 26 and 27.
26.What is the name of the tool above?
A. Wooden float
B. Trowel
C. Shovel
D. Mortar board
27.Name the part labelled P.
A. Blade
B. Ferrule
C. Shank
D. Handle
28.A number of devices used to hold parts of an artefact together is termed ……………
A. fastener
B. adhesive
C. abrasive
D. bonding
29.The arrangement of building units to avoid continues vertical mortar joints in a wall is known as
……………
A. toothing
B. racking back
C. block indent
D. bonding
30.The suitable tool for cutting thin sheets of metal is the ……………
A. chisel
B. scriber
C. snips
D. pincers
1. a. A balanced diet is a diet/ meal which contains all the food nutrients in their right proportions for the needs of the body of
an individual. (3 marks)
b. The association in nature of the following colours.
i. White – Cotton, egg shell, white clay, fog, etc.
ii. Brown – Rotten objects, dry leaves, soil
iii. Yellow – Gold, ripe fruits, egg yolk, chicken fat
(Any 1 each for 3 marks)
c. Four suitable packages for keeping liquid products.
i. Bottle ii. Can iii. Paper box iv. Sachet v. Crate vi. Galloon
(Any 4 for 4 marks)
d. Two weaknesses in household furniture.
i. Missing nail ii. Broken tongue iii. Insufficient glue v. Weak joints vi. Insufficient polish
(Any 2 for 3 marks)
e. Three drawing tools suitable for drawing straight lines.
i. Ruler ii. Set square iii. Protractor iv. T – square
f. A cube in oblique drawing.
2ai. Four examples of building tools.
– Trowel – Pick axe
– Float – Spirit level
– Mortar board – Line and pins
– Shovel or spade – Straight edge
ii. Y- Perpends
Z- Bed joint
iii. Half-bats are introduced in a wall to avoid vertical joint
bi. Gauge rod
ii.
c. Mixing mortar by hand (4marks)
i. Measure the sand onto the platform and spread it evenly.
ii. Measure the cement and add it to the sand.
iii. Heap the mixture until a uniform colour is obtained.
iv. Add water and turn the mixture until a uniform paste is obtained.
ii. Materials for making sand Crete blocks. Any three for Sand, Cement and Water
iii. Two tools for cutting blocks
brick hammer and bolster
e. Four uses of clay
i. Pot and ceramics
ii. Traditional ovens
iii. Mixing mortar
iv. Building houses
v. dish ware
ci. Tee halving joint
ii. 3 tools for constructing the joint. Any three for
Try square, pencil, rip saw, tenon saw, mortise chisel, firmer chisel.
e i. using glass paper on wood.
– To obtain a smooth finish.
ii. seasoning a piece of wood.
– workable, durable, reduce weight, improve quality, receive polishes better.
iii. Applying polishes on wood.
– Beautification, protection, prevention of insects attack.
bi. Soldering is the method of joining sheet metal together using a fusible alloy called solder.
ii. Two materials for soft soldering. soft solder, flux, sheet metal, brass, copper, bronze.
iii. Four tools used in sheet metal work.
snips, Bick iron stake, extinguisher stake, Tinsman mallet, Tinsman anvil.
iv. Two examples of joint and seams used in sheet metal.
lap joint, grooved lap seam, circular lap seam, grooved seam.
di. Rivet is a device used to hold two pieces of metals permanently.
ii. Two uses of rivet are; any two for
– holding two pieces of metal permanently.
– holding the slipping parts of scissor, etc.
– making the handles of cutlasses, buckets, etc.
iii. Two examples each of the following;
-Rivet: pan, mushroomed, snap, flat, countersink. 1 mark for any two
– Screws: round head, raised head, countersink head. 1 mark for a
Nails: round wire, clout, panel pin.