Question

how a fire extinguisher is used ?

Answer 1

The pin is pulled from the trigger and then it is pushed for extinguishing the fire.....

Answer 2

The key to putting out a fire with an extinguisher is to use the PASS strategy: Pull the pin, Aim the hose, Squeeze the lever, and Sweep the hose. However, before you use a fire extinguisher to put out a fire, it’s very important that you determine whether or not it’s appropriate for you to be fighting the fire, and whether or not you'll be able to put it out. If you don’t think you can fight the fire, or if you have any doubts, evacuate the building immediately and call the fire department.