Question

what are the chemical Raising agent and Biological?

Answer 1

A common chemical raising agent used in food is baking powder, which contains two active ingredients, bicarbonate of soda (sodium bicarbonate - something called an alkali) and cream of tartar (potassium hydrogen tartrate - something called an acid).

Yeast, a tiny single-celled microorganism, a type of fungus, is an example of a biological raising agent.  Yeast is used to make bread dough.

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