Question

To put out fires involving electrical equipments and inflammable materials, the best fire extinguisher would be 
1. Water
2. Blankets
3. Carbon dioxide
4. Sand

Answer 1

Correct Answer - Option 3 : Carbon dioxide

The correct answer is carbon dioxide.

• Carbon dioxide is the best fire extinguisher.
  • It displaces oxygen from the air or takes away the oxygen element from the fire triangle which helps in extinguishing the fire.
• It is a non-combustible gas.
• It is heavier than air.
• It helps to bring down the heat or ignition temperature.
  • In the fire of class 'B', carbon dioxide is used to extinguish the fire.
  • Class 'C' is also use carbon dioxide as fire extinguisher. 

Classes of fire	Types of fires
Class “A”	Ordinary combustibles such as wood, paper, cloth, rubber, and some plastics.
Class “B”	Flammable liquids such as gasoline, petroleum greases, tars, oils, oil-based paints, solvents, alcohols Flammable gases such as propane and butane
Class “C”	Energized electrical equipment such as computers, servers, motors, transformers, and appliances
Class “D”	Combustible metals such as magnesium, titanium, zirconium, sodium, lithium, and potassium.
Class “E”	Cooking oils and greases such as animal and vegetable fats