Question

what is type of gas is released by yeast or chemical leaveners? oxygen nitrogen carbon dioxide hydrogen

Explanation:

Yeast undergoes fermentation. In fermentation, yeast breaks down sugars. One of the by - products of this reaction is carbon dioxide gas. Chemical leaveners like baking powder (a mixture of sodium bicarbonate and an acid) react in the presence of moisture. The reaction between the bicarbonate and the acid also produces carbon dioxide gas. This gas gets trapped in the dough or batter, causing it to rise.

Answer:

Carbon dioxide