Question

Foam accumulates on the of 'dal' kept for a long time in summer. Give reason. *



In summer temperature is conducive for growth of bacteria

Dal kept in summer start fermentating due to bacterial contamination

Fermentation releases carbon dioxide causing foam on the surface

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Answer 1

Explanation:

In summer, the atmospheric temperature is favourable for microbial growth. Foodstuffs like 'dal' which kept open for a long time favours the growth of microbes. The microbes release various gases as byproduct and these gases form foam on the surface of foodstuffs having more water content.

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