A mixture of sodium bicarbonate and a mild edible acid is known as __________.

Correct option is C

​The correct answer is (c) baking powder.

Explanation:

• Baking powder is a mixture of sodium bicarbonate (NaHCO₃) and a mild edible acid, such as tartaric acid or cream of tartar.
• When baking powder is mixed with water, the acid reacts with sodium bicarbonate to release carbon dioxide (CO₂) gas, which causes baked goods to rise and become fluffy.

Information about the other options:

Baking soda:

o    Baking soda is pure sodium bicarbonate (NaHCO₃).

o    It is not a mixture, and it requires an acidic ingredient (e.g., lemon juice, vinegar) to activate and release CO₂.

Bleaching powder:

o    Bleaching powder is calcium hypochlorite (Ca(OCl)₂).

o    It is used as a disinfectant and bleaching agent, not as an ingredient in cooking.

Washing soda:

o    Washing soda is sodium carbonate (Na₂CO₃).

o    It is used for cleaning purposes and softening water, not for baking.

Information Booster:

• Baking powder is a leavening agent widely used in cakes, muffins, and bread to make them soft and airy.
• The acid-base reaction that releases CO₂ is crucial for the texture of baked goods.