Question

1. the oxyacetylene flame reaches a temperature of 5,700° - 6,300°f.
2. the oxygen cylinder valve is opened with a wrench.
3. acetylene becomes unstable if it is compressed to more than 15 pounds per square inch.
4. acetylene has no detectable odor.
5. when moving an oxygen or acetylene cylinder, the cylinder should be carefully rolled on its bottom edge.
6. two types of oxyacetylene welding torches are the injector and the equal pressure.
7. welding tip size is governed by the diameter of the opening.
8. a pair of pliers is used to mount the tip on the welding torch.
9. a sparklighter should be used to light the oxyacetylene torch.
10. mapp gas is more sensitive to shock than acetylene.
11. needle valves on the torch regulate the flow of oxygen and acetylene.
12. two types of regulators are the single - stage and the two - stage.
13. welding hoses can be safely repaired with tape.
14. oxygen and acetylene cylinders should be stored in a vertical position and chained against a stationary object.
15. cylinders should not be exposed to any open fire, heat, or sparks from the torch.

Explanation:

1. The oxy - acetylene flame reaches about 5,700 - 6,300°F. True.
2. Oxygen cylinder valves are opened with a wrench. True.
3. Acetylene becomes unstable when compressed over 15 psi. True.
4. Acetylene has a garlic - like odor, not no detectable odor. False.
5. Cylinders should not be rolled on bottom edge. False.
6. Injector and equal - pressure are types of oxy - acetylene welding torches. True.
7. Welding tip size is based on opening diameter. True.
8. A special tool, not pliers, is used to mount the tip. False.
9. A sparklighter should be used to light the torch. True.
10. Acetylene is more shock - sensitive than Mapp gas. False.
11. Needle valves regulate oxygen and acetylene flow. True.
12. Single - stage and two - stage are types of regulators. True.
13. Welding hoses should not be repaired with tape. False.
14. Oxygen and acetylene cylinders should be stored vertically and chained. True.
15. Cylinders should avoid open fire, heat, and sparks. True.

Answer:

1. T
2. T
3. T
4. F
5. F
6. T
7. T
8. F
9. T
10. F
11. T
12. T
13. F
14. T
15. T