Question

how baking powder make the cake spongy and soft

Answer 1

Baking powder is mixed with the flour. When water is added to this flour to make dough, baking powderundergoes a chemical reaction during which carbon dioxide gas is produced. This carbon dioxide gas gets trapped into the dough and bubbles out which causes the cake to rise making it soft and spongy.

Answer 2

baking powder has mild edible acid like tatric and citric acid which neutralises the basic effect of baking soda moreover CO2 and H2O is releasedin rxn. CO2 andH2O makes cake soft and and spongy
hope it helped !!!!!