Correct option is A
The correct answer is: (a) For food colouring
Explanation:
Baking soda (chemical name: sodium bicarbonate, NaHCO₃) is not used for food colouring.
It is widely used in the kitchen as a leavening agent in baking (helps dough rise), in antacids to relieve acidity, and even in fire extinguishers due to its ability to release CO₂ when heated.
However, food colouring requires dyes or pigments, not baking soda.
Information Booster:
Baking soda reacts with acids like vinegar or lemon juice to release carbon dioxide (CO₂).
It is commonly used in baking cakes, muffins, and bread.
Acts as a fire suppressant by releasing CO₂ to smother flames.
Used in antacids to neutralize excess stomach acid.
It has mild abrasive and deodorizing properties for cleaning as well.