Why does adding baking powder make a cake rise?
Answer and explanation
Correct answer: Carbon dioxide is released on heating
Baking powder contains sodium hydrogen carbonate and a mild edible acid. When the mixture is moistened and heated, the acid reacts with the hydrogen carbonate and produces carbon dioxide gas. The gas expands and forms bubbles trapped in the batter, making the cake rise and become porous. Oxygen does not change into water, sodium metal is not formed, and nitrogen is not responsible for the expansion.
Frequently asked questions
What is the correct answer to this question?
Carbon dioxide is released on heating
Why is this the correct answer?
Baking powder contains sodium hydrogen carbonate and a mild edible acid. When the mixture is moistened and heated, the acid reacts with the hydrogen carbonate and produces carbon dioxide gas. The gas expands and forms bubbles trapped in the batter, making the cake rise and become porous. Oxygen does not change into water, sodium metal is not formed, and nitrogen is not responsible for the expansion.
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.
