A food stall owner was preparing dough for making bhaturas.He added a pinch of yeast and sugar to the dough and left it in a warm place. After few hours, the dough had risen. There was a sour smell too.
(a)Why did the dough rise? -
(b)Why did the dough smell sour?
(c)Why was sugar added to the dough?
(d)What would have happened if the dough was kept in the refrigerator, soon after it was prepared?
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Answer:
1}the C02 released during respiration by the yeast results in the rise of dough.
2}During anaerobic respiration, yeast produces alcohol resulting in sour smell.
3}Sugar acts as food for yeast.
4}At low temperatures, yeasts will not multiply and respire because of which the dough will not rise or become sour.
Explanation:
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