How does the gas formed when sodium hydrogen carbonate reacts with an acid help food rise?
Answer and explanation
Correct answer: Gas bubbles make the mixture rise and become soft
The governing concept is gas evolution and expansion in a food mixture. Sodium hydrogen carbonate reacts with an acid to release carbon dioxide, for example NaHCO3 + H+ → Na+ + H2O + CO2. During heating, the carbon dioxide forms and expands as many small bubbles trapped in the batter or dough. These bubbles increase the volume and create a lighter, softer texture, so option A is correct.
Frequently asked questions
What is the correct answer to this question?
Gas bubbles make the mixture rise and become soft
Why is this the correct answer?
The governing concept is gas evolution and expansion in a food mixture. Sodium hydrogen carbonate reacts with an acid to release carbon dioxide, for example NaHCO3 + H+ → Na+ + H2O + CO2. During heating, the carbon dioxide forms and expands as many small bubbles trapped in the batter or dough. These bubbles increase the volume and create a lighter, softer texture, so option A is correct.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
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