The large majority of fires can be put out safely with water. The exceptions are electrical, grease, or some super heated metals.
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I would put out fire safely in a science lab by spreading Carbon di oxide gas on the fire
A fire extinguisher should be used to put out a fire safely in a laboratory. It is essential to know the type of fire extinguisher suitable for the specific type of fire, such as Class A, B, or C fires, to effectively extinguish the flames.
Class A fires (wood, paper, cloth) can be extinguished with water.
If your hands are on fire, you can safely extinguish the fire by immediately stopping, dropping to the ground, and rolling to smother the flames. This technique deprives the fire of oxygen and helps put it out quickly.
Generally using the correct fire extinguisher is your best bet
Flour should not be used to extinguish a grease fire as it can cause the fire to spread. Instead, a fire extinguisher or baking soda should be used to safely put out a grease fire.
Liquid
You can put metal in the refrigerator but not in the microwave where it could cause a fire.
It will put out burning fluids.
No, putting flour on a fire is not safe as it can cause the fire to spread or even explode. It is important to use a fire extinguisher or call emergency services in case of a fire.
The large majority of fires can be put out safely with water. The exceptions are electrical, grease, or some super heated metals.