Chemically baking soda is
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Calcium phosphate
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Sodium bicarbonate
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Sodium chloride
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Baker's yeast
B
Correct answer
Explanation
Baking soda is the common name for sodium bicarbonate (NaHCO3), a white crystalline compound used in baking as a leavening agent. It releases carbon dioxide when heated or mixed with acid, causing dough to rise. Don't confuse it with baking powder, which contains sodium bicarbonate plus additional ingredients.