GAS WELDING

What is the primary fuel gas used in gas welding?

• Butane
• Natural Gas
• Propane
• Acetylene

What is the purpose of the oxygen in gas welding?

• To enhance the combustion of the fuel gas

• To create a protective gas shield.
• To reduce the amount of fuel needed.
• To cool the metal during welding.

What type of flame is produced when there is a balanced mixture of oxygen and acetylene?

• Carburizing flame
• Oxidizing flame
• Reducing flame
• Neutral flame

What is a common application of gas welding?

• Cooking food in a gas oven.
• Heating water in a boiler.
• Cutting metals

• Lighting a gas fireplace.

Which of the following is a safety precaution when using gas welding?

• Use a flammable liquid to clean the area.
• Using proper protective gear.

• Wear loose clothing while welding.
• Ignore the manufacturer's safety guidelines.

What type of material is most commonly joined using gas welding?

• Plastic
• Mild steel
• Copper
• Aluminum