TOPIC: ADHESIVE
DIRECTION: Choose the correct answer from the lettered options.
1. A urea formaldehyde (U. F.) powder resin and a hardener already mixed together has a shelf life between ______.
A. 1 − 2 months
B. 2 − 4 weeks
C. 1 − 2 years
D. 2 − 4 days
The correct answer is option [C]
2. ________ is a type of protein adhesive which is the powdered extract from the curds of skin milk. A. Vegetable protein adhesive
B. Casein glue
C. Fish glue
D. Chemical glue
The correct answer is option [B] Solution: Casein glue is extracted from the curds of skin milk.
3. When mixing the resin and the hardener, it should be measured ______.
A. according to the wood workers desire
B. according to the maker’s instructions
C. according to the size of mixing pot
D. all of the above
The correct answer is option [B]
4. Assembly time of P.V.A. (Polyvinyl Acetate) is from _________.
A. 2 − 5 seconds
B. 10 − 20 seconds
C. 10 − 20 minutes
D. 10 − 20 hours
The correct answer is option [C]
5. ________ is a substance used to bond two surfaces together.
A. Polish
B. Abrasive
C. Dowel
D. Glue
The correct answer is option [D]
6. Characteristics of animal glue include all except ________.
A. it must be used hot or cold
B. it may be attacked by mould and fungi
C. it is non-inflammable and non-toxic
D. it can be stored indefinitely if kept cool and dry
The correct answer is option [A] Solution: animal glue can only be used hot not hot or cold.
7. For application of animal glue, you need to _______.
A. apply hot with brush or heated glue spreader
B. warm the parts to be glued during cold weather
C. remove surplus glue with hot water
D. all of the above
The correct answer is option [D]
TOPIC: CENTERS AND CENTERINGS
DIRECTION: Choose the correct answer from the lettered options.
1. Which member of the Centre is placed across the lower part to prevent the Centre from spreading out when it is carrying the weight of the arch?
A. Wedge
B. Rib
C. Tie
D. Prop
The correct answer is option [C]
2. In the construction of a concrete arch Centre, which of the following knowledge is not important? A. The crown of the arch
B. The rise of the arch
C. The voussoirs of the arch
D. The span of the arch
The correct answer is option [C] Solution: Voussoirs are the body of the arch in brick form not concrete.
3. What is the name of the part labelled ′2′ in the drawing shown?
- Prop
- Bearer
- Tie
- Lagging
The correct answer is option [A]
4. Parts of Centre for arches may include ________.
A. brace
B. folding wedges
C. sole plate
D. all of the above
The correct answer is option [D]
5. The arrow number ′5′ in the drawing shown is known as _______.
A. rib
B. bearer
C. wedges
D. lagging
The correct answer is option [D]
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