Combustion & Flame

What are the three types of combustion?

• complete combustion, incomplete combustion, spontaneous combustion

• uncontrolled combustion

• spontaneous ignition

• partial combustion

What are the conditions required for combustion to take place?

• Fuel, nitrogen, and heat

• Fuel, oxygen, and water

• Fuel, carbon dioxide, and heat

• Fuel, oxygen, and heat

Describe the structure of a flame.

• A flame is composed of solid layers

• A flame is a single homogeneous structure

• A flame consists of three main parts: the inner core, the middle zone, and the outer zone.

• A flame has only two parts: the core and the outer layer

List three fire safety measures to prevent combustion accidents.

• Storing flammable materials near heat sources

• Using damaged electrical cords

• Regularly inspecting and maintaining electrical systems, Properly storing flammable materials away from potential ignition sources, Installing smoke detectors and fire extinguishers

• Leaving candles unattended in a room

What are the effects of incomplete combustion?

• Formation of harmful byproducts such as carbon monoxide, soot, and unburned hydrocarbons

• Enhanced air quality

• Reduced emissions

• Increased efficiency

Explain the difference between complete and incomplete combustion.

• Complete combustion produces oxygen and water.

• Complete combustion produces carbon dioxide and water, while incomplete combustion produces carbon monoxide, carbon, and water.

• Incomplete combustion produces carbon dioxide and water.

• Complete combustion produces carbon monoxide and carbon.

How does the presence of a fuel, oxygen, and heat contribute to combustion?

• Cooling down the environment is necessary for combustion

• The presence of fuel, oxygen, and heat is essential for combustion to take place.

• Combustion can occur without the presence of oxygen

• The presence of water instead of fuel is needed for combustion

What role does the ignition temperature play in combustion?

• The ignition temperature determines the color of the flame during combustion.

• The ignition temperature determines if a substance will combust or not.

• The ignition temperature affects the speed at which combustion occurs.

• The ignition temperature determines the amount of smoke produced during combustion.

How can the spread of fire be controlled in case of an emergency?

• Use water hoses, throw sand, or ignore the fire

• Use fire extinguishers, fire blankets, or sprinkler systems; evacuate the area and call emergency services.

Discuss the importance of ventilation in combustion processes.

• Ventilation causes excessive cooling in combustion processes

• Ventilation can lead to increased pollution in combustion processes

• Ventilation is important in combustion processes to provide oxygen for efficient burning, prevent incomplete combustion, and remove harmful byproducts and heat.

• Ventilation is not necessary in combustion processes