Question

what dough if Left Open after few days starts to emit a faul small and because unfit for use. give reason

Answer 1

Wheat dough when kept in open for few days, following activities takes place:                1. formation of fungus                2. reproduction of yeast These fungus and yeast when present in dough, it will become unfit for eating or for use. Since formation of fungus takes place in dough, so it gives a foul smell.

Answer 2

this is because after few days of the preparation the dough starts decomposing due to several reaction taking place in it and thus it gives unpleasant smell and become unfit for further use.