Question

1. Processes that unite metals with a third joining metal which is introduced into the joint in a liquid state and
then allowed to solidify are --------- and -------------- (A) soldering and brazing (B) brazing and riveting (C)
brazing and soldering (D) soldering and adhesive bonding (E) brazing and adhesive bonding.
2. Hard solders are made of alloys of these metals, except (A) Copper (B) Zinc (C) Silver (D) Brass (E) Tin.
3. These are methods of joining metal pieces together except (A) tanning (B) welding (C) riveting (D)
soldering (E) adhesive bonding.
4. --------- is used for cleaning the metal surfaces of the joint before soldering. (A) Soldering bit (B) Files (C)
Flux (D) Solder (E) Tinner.
5. ----------- is used for fire work such as soldering wire terminals in radio and television sets (A) Hand lever
shears (B) Electric soldering bits (C) Files (D) Blow pipe (E) Brazing hearth.
6. Which two options best describes major kinds of soft solder? (A) Tinsmith’s solder and plumber’s solder
(B) Carpenter’s solder and metal worker’s solder (C) Blow-pipe solder and Hinge cone solder (D)
Mansion’s solder and Panel beater’s solder (E) Electrician’s solder and painter’s solder.
7. Which of the following metals is not a constituent of duralumin? (A) Aluminum (B) Copper (C)
Magnesium (D) Manganese (E) Zinc.
8. Which of the following statements about zinc is incorrect? (A) Its colour is bluish-white (B) It is brittle (C)
It has good resistance to rust (D) It has iron content (E) It is used in coating steel.
9. Among the options, which does not fail into the grade of alloy steel (A) high speed steel (B) tool steel (C)
high-tensile steel (D) copper steel (E) stainless steel.
10. Which of following materials cannot be made of cast iron? (A) Hammer heads (B) Vice body (C) Piston
rings (D) Cylinder blocks (E) Surface plates.
11. The following materials are made of high carbon steel except? (A) Drills (B) Files (C) Reamers (D) Chisels
(E) Piston rings.
12. Aluminum is used extensively for the manufacture of the following items except? (A) Cooking utensils (B)
Foils (C) Electric cables (D) Aircraft parts (E) Water pipings.
13. What type of hammer is used when avoiding damage to the faces of the work? (A) Light hammer (B) Soft
hammer (C) Hard hammer (D) Ball pein head hammer (E) Claw hammer.
14. Why the soldering bit is usually made of copper? (A) Copper is a good conductor of heat (B) Copper
retains heat (C) Copper has an affinity with solder (D) All of the above (E) None of the above.
15. The reason for applying flux during soldering is to (A) prevent formation of more oxide (B) increase the
size of joint (C) reduce the size of the joint (D) beautify the joint (E) all of the above.

Answer 1

Answer:

only 5 points are not enough to do it

I want minimum 50 points for it