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Question

Which of the following is the best extinguisher for flammable materials?

A
Carbon dioxide.
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B
Carbon monoxide.
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C
Sulphur dioxide
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D
Water
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Solution

The correct option is A Carbon dioxide.
Carbon Dioxide is a clean,non-contaminating, odourless gas and is used as a fire extinguisher for flammable liquid fires. Carbon dioxide molecules are heavier than oxygen molecules hence it cuts down the supply of oxygen and brings down the ignition temperature. Carbon dioxide fire extinguishers extinguish the fire by taking away the oxygen element of the fire triangle. It's also non-combustible and non-conductor of electricity, therefore, it can be used to put off all types of fires.

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