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You need to decide whether to fight a small fire using a portable fire extinguisher. Which situation indicates a small fire for which it may be appropriate to use a portable fire extinguisher?

ASmoke is quickly filling the room, decreasing visibility.
BThe room temperature is only slightly increased.
CYou must crawl on the floor due to heat or smoke.

I think it would be B...

Verified Answer :

Kalahira

A portable fire extinguisher can save lives and property. Nevertheless, it has limitation for it is only indicated to put off small fire. It is appropriate to use portable fire extinguisher when the room temperature is only slightly increased. In addition, one must decide to use portable fire extinguisher to fight a small fire only if the room is not filled with smoke and the fire is not growing. Therefore, the answer is B.

Smoke is pooling on the ceiling and visibility is reducing will be the situation to use portable fire extinguisher.


Further Explanation:

A portable fire extinguisher refers to the item of the equipment for extinguishing a fire. The portable fire extinguisher is known to be effective only for the kind and size of the fire that it is rated for. The selection of the extinguisher should be made with the class of fire in the mind. There are four classes of fire extinguishers:


1. Class A extinguishers are responsible for putting out fires in ordinary combustibles like paper or wood

2. Class B extinguishers are for use on flammable liquids such as oil, gasoline, and grease.

3. Class C extinguishers are known to be suitable for use only on the electrically energized fires

4. Class D extinguishers are mainly designed for use on flammable metals.  


An indicator for small fire is a smoke that is pooling on the ceiling. Hence, option A is correct.


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Answer Details:

Grade: High school

Subject: Biology

Chapter: Fire safety


Keywords:

Fire extinguisher, smoke, ceiling, portable fire extinguisher, four classes, class B, class A, class D, class C.

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