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A typical restaurant would require at least one Type ABC fire extinguisher plus a Type K fire extinguisher near the kitchen (for grease and fryer fires).
class c fire extinguisher
You need to use a Class B extinguisher on flammable liquids.
A burning box of wood or paper would require a type A extinguisher.
Yes. They are rated for the type of fire they can be used against, and the capacity of the extinguisher.
It will put out burning fluids.
A classroom would generally contain only "ordinary combustibles", so a type A fire extinguisher would be appropriate. In a chemistry laboratory, cooking class, automobile engines, electrical or welding class, different rules would dictate the type, placement and number of required fire extinguishers, typically Type ABC (multi-class).
There are several categories of fire extinguishers. It depends on where the extinguisher is likely to be used and on what type of fire is to be expected. For example: a soda and water extinguisher is commonly used for general type fires. But, due to the risk of being electrocuted, a soda and water extinguisher would be dangerous to use round high voltage electrical equipment - so a carbon dioxide extinguisher would be used instead. On oil fires, a foam extinguisher would be best, as a soda water extinguisher would simply spread the area of the oil fire, and even increase the intensity of the flames, while the foam would smother the flames, cutting off the oxygen to feed the fire.
Only the type of fire that is highlighted
you'll never know when any type of fire extinguisher can come handy in case of a fire
True, provided that the extinguisher is the proper type. An ABC dry chemical extinguisher would be the best extinguisher to use.
It is best to have at least two fire extinguishers for your house. A dry chemical fire extinguisher would be good and it can be purchased on eBay.