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Microorganisms: Friend and Foe — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceMicroorganisms: Friend and Foe1 Mark
MCQ
Refer to the given experimental set up as shown in the given figure and select the correct option regarding it.
  • A
    In $X,$ yeast causes fermentation which converts sugar into lactic acid and carbon dioxide.
  • B
    In $Y,$ oxygen gas is released while carbon dioxide gas is absorbed.
  • ✓
    In $Y,$ lime water turns milky.
  • D
    Both $(b)$ and $(c).$
✓

Answer

Correct option: C.
In $Y,$ lime water turns milky.

 In labelled part $X,$ yeast causes fermentation which converts sugar into alcohol and carbon dioxide. Carbon dioxide released by $X$ when enters into $Y,$ lime water present in it turns milky.

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