Dough rises because yeast or baking agents produce carbon dioxide gas. This gas forms bubbles, expanding the dough. Warmth and moisture help this process, causing the dough to puff up and become soft and airy.
Class 8 Science Curiosity Grade 8 Chapter 1 Exploring the Investigative World of Science question answer
Class 8 NCERT Science Curiosity Chapter 1 Exploring the Investigative World of Science solutions
Dough rises when yeast or baking soda inside it produces carbon dioxide gas. The gas forms tiny bubbles that get trapped in the dough, causing it to expand. Heat, moisture and time help this process. As the gas increases, the dough becomes soft, airy and ready to bake or cook. This rising is a result of fermentation or chemical reactions and shows how living microbes or agents can change materials naturally.
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