1.

Foam accumulates on the surface of 'dal' kept for a long time in summer give scientific reasons​

Answer»

It's due to the release of gasses by microbes as a byproduct and these gases only form foam on the surface of foodstuffs having more water content. 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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