The puffed up look of dosa and idli dough comes from:

ANitrogen gas

BHydrogen gas

CCarbon dioxide

DOxygen gas

Answer & Solution

Correct answer: C. Carbon dioxide

1. The dough is fermented by bacteria before cooking. 2. A gas is released and trapped in the mixture. 3. That gas is carbon dioxide. _Source: syllabus Biology, Chapter 10, Microbes in Human Welfare._

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