Question

Baking powder contains baking soda and:
(A) Potassium hydrogen tartrate
(B) Calcium bicarbonate
(C) Sodium carbonate
(D) Vinegar

Answer 1

Baking powder is a dry leavening agent which is a mixture of carbonate or a bicarbonate and a weak acid. The base and the acid are prevented from reacting prematurely by adding a buffer such as Cornstarch. It contains a salt of an alkaline earth metal.

Complete step by step Solution
Baking soda is used to volume and lighten the texture of the baked it releases carbon dioxide when it comes in contact with the batter or, the moisture in it rather, through an acid-base reaction causing bubbles in the wet mixture to expand and thus leaven the mixture. There are two types of baking powders, one is the single action baking powder and the other one is the double action. The single-action baking powder was discovered by Alfred Bird in England in 1843. Most commonly used baking powders are composed of sodium carbonate or bicarbonate and one or more acid salts such as Potassium hydrogen tartrate.
Hence, the correct option here is A.

Note
Baking powder is used instead of yeast for end-products where the fermentation flavours would be undesirable, where the batter lacks the elastic structure to hold the gas molecules for more than a few minutes. And to speed the production of the baked goods. Because carbon dioxide is released at a much faster rate than through fermentation, breads made with carbon dioxide are called quick breads. The introduction of baking powder thus lessened the time required to make breadstuffs and other baked goods.