Question

Which of the following is not a use of baking soda?

• A. In medicines as antacid
• B. As a component of baking powder
• C. In removing permanent hardness of water
• D. In fire extinguishers

Answer 1

The correct option is C In removing permanent hardness of water

Baking soda,$\left(NaHC{O}_3\right)$ also known as sodium bicarbonate, is widely used in baking. This is because it has leavening properties, meaning it causes dough to rise by producing carbon dioxide. Aside from cooking, baking soda has a variety of additional household uses and health benefits.

They are-

• In medicines as antacid
  
• As a component of baking powder
  
• In fire extinguishers
• Relieves insect bites
• Relieves skin irritation
• Air Freshener
  
• Hence, option C is wrong about baking soda as it is not used in removing permanent hardness of water.