SP power point 5 2025

What is the name of the triangle that represents the principles of combustion?

• Water Triangle

• Fire Triangle

• Air Triangle

• Earth Triangle

What are the three components of the fire triangle?

• Fuel, Water, Heat

• Fuel, Oxygen, Heat

• Oxygen, Heat, Carbon Dioxide

• Fuel, Nitrogen, Heat

Which of the following is an example of a combustion reaction?

• Propane + Oxygen + Spark = Flame

• Water + Oxygen + Heat = Steam

• Carbon Dioxide + Heat = Carbon Monoxide

• Nitrogen + Oxygen + Heat = Nitric Oxide

What are the four uses of gases in plumbing situations?

• Soldering, Heating water, Space heating, Cooking

• Welding, Cooling, Lighting, Insulating

• Painting, Drying, Freezing, Melting

• Cleaning, Lubricating, Sealing, Polishing

Which of the following is not one of the three common gases used?

• Natural gas

• Propane

• Butane

• Methane

What is meant by the term calorific value?

• The amount of light produced by a specific amount of fuel.

• The amount of heat produced by a specific amount of fuel.

• The amount of energy stored in a battery.

• The amount of pressure exerted by a gas.

What is the relative density of propane?

• 0.58

• 1.78

• 2.0

• 1.0

Which gas has the highest calorific value?

• Natural gas

• Propane

• Butane

• Methane

What is the flame temperature of natural gas?

• 1930°C

• 1980°C

• 1996°C

• 2000°C

What is the approximate air/gas ratio for butane?

• 10:1

• 24:1

• 30:1

• 20:1