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Q7
(UPPCS/2025)
Science & Technology › Basic Science (Physics, Chemistry, Biology)
With reference to 'Baking Soda', which of the following statements is/are correct ?
1. It is Sodium hydrogen carbonate.
2. It is used in fire extinguishers.
Select the correct answer from the code given below :
Code :
Result
Your answer:
—
·
Correct:
D
Explanation
Both statements are correct. Baking soda is the common name for Sodium hydrogen carbonate (NaHCO3). It is produced using the Solvay process, where sodium chloride reacts with ammonia and carbon dioxide in water.
- Statement 1: It is indeed Sodium hydrogen carbonate, also known as sodium bicarbonate.
- Statement 2: It is used in soda-acid fire extinguishers. In these extinguishers, baking soda reacts with an acid (like sulphuric acid) to liberate carbon dioxide (CO2) gas. The CO2 gas forms a blanket over the fire, cutting off the oxygen supply and effectively extinguishing the flames.
Additionally, baking soda is widely used as an antacid to neutralize excess stomach acid and as a leavening agent in cooking.
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