A lot of dry powder of one of the following chemicals can be released over a fire to extinguish it. This chemical is
a. Plaster of paris
b. Baking soda
c. Washing soda
d. Bitumen
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its answer is plaster of paris
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b. Baking soda
Baking soda (sodium bicarbonate) is regularly used on class B and C fire extinguishers. It was the first of the dry chemical agents developed. In the heat of a fire, it releases a cloud of carbon dioxide that smothers the fire. That is, the gas drives oxygen away from the fire, thus stopping the chemical reaction.
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