You are in a populated building that has caught fire and you do not have access to a fire exti...........

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You are in a populated building that has caught fire and you do not have access to a fire extinguisher device or water. In this case, which of the following is the best course of action?

Spread a mixture of lots of salt and sugar on the fire

Release a lot of dry baking soda on the fire

Throw saltpetre on the material that has caught fire

Spray a mixture of acetylene and dry air in the fire

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Explanation:

Justification: Option B: Carbon dioxide (CO2) is the best extinguisher. One way to get CO2 is to release a lot of dry powder of chemicals like sodium bicarbonate (baking soda) or potassium bicarbonate. Near the fire, these chemicals give off CO2. Hence, B is the most appropriate option.
Option C: Saltpetre is a material used in making explosives, so clearly C is incorrect.
Option D: Acetylene is a flammable gas and will only increase the fire hazard. So, D is wrong.