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How does baking soda help food rise on heating?

Answer and explanation

Correct answer: By producing carbon dioxide gas

Baking soda is sodium hydrogen carbonate, NaHCO₃. On heating, it undergoes thermal decomposition: 2NaHCO₃ → Na₂CO₃ + H₂O + CO₂. The released carbon dioxide forms bubbles in the dough or batter, and these expanding bubbles make the food rise. Hence option A is correct. The process is not caused by stopping hydrogen, absorbing oxygen, or solidifying water, so B, C, and D are incorrect.

Related tags

ScienceClass 10Acids Bases SaltsBaking SodaThermal DecompositionAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And Behaviour

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