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Answer

(a) Sodium hydrogen carbonate.

(b) 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.

(c) Potassium hydrogen carbonate.

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(a) Sodium hydrogen carbonate.

(b) 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.

(c) Potassium hydrogen carbonate.

Answer

(a) Sodium hydrogen carbonate.

(b) 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.

(c) Potassium hydrogen carbonate.

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