Baking Soda (Uses) MCQs Quiz | Class 10
This Class X Science (Code 086) quiz covers Unit I: Chemical Substances – Nature and Behaviour, focusing specifically on the topic of Baking Soda. The questions explore its chemical properties, uses in baking (making cakes soft and spongy), application as an antacid for acidity relief, and its role in soda-acid fire extinguishers. Attempt the 10 MCQs below, submit your responses to view the detailed results, and download the solution PDF for revision.
Overview of Baking Soda
Baking Soda, chemically known as Sodium Hydrogen Carbonate (NaHCO₃), is a mild non-corrosive basic salt. It is produced using Sodium Chloride as one of the raw materials through the Solvay process. It is a white crystalline solid that appears as a fine powder.
Key Uses and Properties
- In Baking: Used to make breads and cakes soft and spongy. When heated or mixed with water, it releases Carbon Dioxide (CO₂) gas, which causes the dough to rise. Often used as Baking Powder (a mixture of Baking Soda and a mild edible acid like tartaric acid).
- As an Antacid: Being alkaline in nature, it neutralizes excess acid in the stomach and provides relief from acidity and indigestion.
- In Fire Extinguishers: Used in soda-acid fire extinguishers. It reacts with sulphuric acid to liberate Carbon Dioxide, which cuts off the oxygen supply and extinguishes the fire.
Chemical Reaction on Heating
When baking soda is heated during cooking, the following reaction takes place:
2NaHCO₃ (Heat) → Na₂CO₃ + H₂O + CO₂
The Carbon Dioxide produced is responsible for the rising action in baking.
Quick Revision Summary
| Property / Use | Details |
|---|---|
| Chemical Formula | NaHCO₃ |
| Chemical Name | Sodium Hydrogen Carbonate |
| Nature | Mildly Basic (Alkaline) |
| Gas Released | Carbon Dioxide (CO₂) |
Extra Practice Questions
- Why is tartaric acid added to baking soda to make baking powder?
- Write the chemical equation for the preparation of baking soda.
- How does baking soda help in treating bee stings? (Hint: It neutralizes the acid injected by the sting).
- What is the difference between Washing Soda and Baking Soda?
- Name the raw materials used in the production of Sodium Hydrogen Carbonate.
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