Gas Welding Short Questions! Trivia Quiz

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| By Scott Stone

Scott Stone

Community Contributor

Quizzes Created: 5 | Total Attempts: 17,912

Questions: 5 | Attempts: 1,227 | Updated: Mar 21, 2023

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Questions and Answers

1.

Which of the following is not a correct statement about the oxy-acetylene welding process?
- A.
  
  Acetylene is the fuel gas for the welding process
- B.
  
  Acetylene cylinders contain porous material impregnated with acetone in which the acetylene is dissolved under pressure
- C.
  
  Oxygen is a combustible gas which supports the combustion of acetylene under pressure
- D.
  
  Acetylene cylinders have left-handed threads to prevent coupling with oxygen equipment
Correct Answer
C. Oxygen is a combustible gas which supports the combustion of acetylene under pressure
2.

What are the names of the 3 main flame types?
- A.
  
  Carburising, Neutral & Reducing
- B.
  
  Carburising, Neutral & Oxidising
- C.
  
  Oxidising, Neutral & Reducing
- D.
  
  Carburising, Oxidising & Reducing
Correct Answer
B. Carburising, Neutral & Oxidising

Explanation
The three main flame types are carburising, neutral, and oxidising. Carburising flame is used to introduce carbon into the surface of a metal, neutral flame does not introduce any elements into the metal, and oxidising flame introduces oxygen into the metal to promote oxidation.

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3.

It is safe to use matches when lighting a welding torch.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
It is not safe to use matches when lighting a welding torch. Welding torches require a high-intensity flame, which matches cannot provide. Instead, a welding torch should be ignited using a flint lighter or a spark lighter specifically designed for welding purposes. Using matches can lead to accidents or injuries due to the insufficient flame produced.

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4.

Highly flammable materials should be cleared from the work area for a radius of two metres when welding with oxy-acetylene equipment.
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
Highly flammable materials should be cleared from the work area for a radius of two metres when welding with oxy-acetylene equipment. This statement is false. When welding with oxy-acetylene equipment, highly flammable materials should be cleared from the work area for a radius of at least 10 meters. This is because the welding process produces sparks, heat, and flames that can easily ignite flammable materials and cause a fire hazard. Therefore, it is important to maintain a safe distance to prevent accidents and ensure the safety of the work environment.

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5.

Using an excess (more/extra) acetylene is called a:
- A.
  
  Oxidising flame
- B.
  
  Carburising flame
- C.
  
  Neutral flame
- D.
  
  Hot flame
Correct Answer
B. Carburising flame

Explanation
In the process of carburization, excess acetylene is used to introduce carbon into the surface of a material, typically steel, to increase its hardness. This is done by heating the material in a fuel-rich environment, where the excess acetylene reacts with the heated metal to form carbon compounds. This creates a carburizing flame, which is characterized by an excess of fuel (acetylene) and a reducing atmosphere. The carbon introduced into the material enhances its strength and wear resistance. Therefore, the correct answer is "Carburising flame."

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Current Version
Mar 21, 2023

Quiz Edited by
ProProfs Editorial Team
Mar 19, 2015

Quiz Created by
Scott Stone

Gas Welding Short Questions! Trivia Quiz

Which of the following is not a correct statement about the oxy-acetylene welding process?

What are the names of the 3 main flame types?

It is safe to use matches when lighting a welding torch.

Highly flammable materials should be cleared from the work area for a radius of two metres when welding with oxy-acetylene equipment.

Using an excess (more/extra) acetylene is called a: