Question

Amina releases a lot of dry powder of a substance ‘X’ on fire caught in heated cooking oil to extinguish it. Name the substance X. Name the product Y formed by substance X to extinguish the fire? Write two ways in which Y helped in extinguishing the fire.​

Answer 1

Question :

Amina releases a lot of dry powder of a substance ‘X’ on fire caught in heated cooking oil to extinguish it. Name the substance X. Name the product Y formed by substance X to extinguish the fire? Write two ways in which Y helped in extinguishing the fire.

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Q1. Name the substance X ?

Answer : X is Sodium hydrogen carbonate.

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Q2. Name the product Y formed by substance X to extinguish the fire?

Answer : Baking soda or sodium hydrogen carbonate.

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Q3. Write two ways in which Y helped in extinguishing the fire.

Answer:

• The heat of fire decomposes sodium bicarbonate to produce carbon dioxide gas.
• The heat of fire decomposes sodium bicarbonate to produce carbon dioxide gas. This carbon dioxide covers the fire like a blanket and cuts off supply of air to the burning substance. Due to this the fire gets extinguished.

★Note : Sodium hydrogen carbonate is the dry powder used as a fire extinguisher.

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