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Which of the following gas is responsible for the puffed-up appearance of the dough?

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in Biology – Class 12 by (271k points)
Which of the following gas is responsible for the puffed-up appearance of the dough?

(a) NH3

(b) CO2

(c) O2

(d) CH4

This question was addressed to me in an online interview.

This interesting question is from Microbes in Household Products-1 in division Microbes in Human Welfare of Biology – Class 12

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Correct answer is (b) CO2

Explanation: The dough which is used for making foods such as dosa and idli is fermented by using bacteria like Streptococcus. The puffed-up appearance of this dough is due to the production of CO2 gas.

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