A white powder is added while baking breads and cakes to make them foft and fluffy. What is the name of the powder ? What are the main ingredients in it ? What are the functions of each ingredient ?

Explanation

White powder is known as baking powder. Its ingredients are baking soda `(NaHCO_(3))` and tartaric acid `(C_(4)H_(6)O_(6)),` Baking soda releases `CO_(2)` gas upn heating. The bubbles of the gas evolved make the cake soft and fluffy.
`2NaHCO_(3)overset("heat")toNaCO_(3)+CO_(2)+H_(2)O`
Sodium carbonate formed in the reaction is likely to impart bitter taste to the cake. Tartaric acid reacts with it and thus, neutralises the effect of bitter taste.