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Question

Which substance does not come under class B fire?

A
Petrol
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B
Cooking oil
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C
Paints
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D
Water
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Solution

The correct option is D Water
Fires caused due to flammable liquid substances like, petrol, varnish, cooking oil, paints etc are called class B fires.
All these substances are lighter than water, therefore, fire extinguishers are used instead of water to extinguish fire.

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