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Welder Practice Test: Gas Welding
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Welder Practice Test: Gas Welding
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25 Questions

1. Which gas flame combination is suitable to weld both ferrous and non-ferrous metal?
2. In oxy-acetylene gas welding heat is generated from mixer of ---------- gases
3. Which gas flame is widely used in welding field ?
4. Name the solution used for cleaning the copper sheets during pickling.
5. What type of flame is used for lind welding of pipes?
6. The porous substance packed inside the acetylene cylinder is ---------
7. The color of oxygen gas cylinder is ----------
8. In gas welding the angle of torch to the work in right ward welding technique is -----------
9. To ignite a oxy –acetylene flame which gas to open first ?
10. If cylinder trolley is not available ,cylinder should be moved by ----------
11. The charging pressure of acetylene cylinder is------------
12. The oxygen and acetylene cylinders ----------
13. A groove or channel formed along the toe of the weld on one or both side is due to -------------
14. The main purpose of keeping hydrogen outside the weld metal is to prevent the metal from -------- -
15. In chemical cleaning which solvent is used to wash the trimming surface?
16. In a welded joint, the fusion zone is heated to the melting of the metal. Which zone is adjacent to the fusion zone?
17. The volume of oxygen gas cylinder is -------------
18. Why cracking is done before fixing the regulator to the cylinder ?
19. In gas welding source of heat is ------------
20. What should be done in cutting blow pipe to allow a stream of high pressure oxygen to pass?
21. Acetylene cylinders are painted with --------- color?
22. Which type of blow pipe can be used in both low pressure and high pressure welding system?
23. Name the method of welding in which metal plates are joined by their similar filler metal to base metal without application of pressure?
24. The hose pipe connected to the gas cylinder with the help of -----------
25. What type of flame is used to weld grey cast-iron?

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