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Class 10
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Liberation of Carbon Dioxide gas during Fermentation
Liberation of Carbon Dioxide gas during Fermentation
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1)
Which type of fermentation is observed in yeasts?
Pyruvic fermentation
Alcoholic fermentation
Lactic acid fermentation
Acrylic fermentation
2)
Which of these is not a product of fermentation?
Ethanol
Lactate
Oxygen
Carbon dioxide
3)
Fermentation occurs in the
Absence of oxygen
Presence of carbon
Presence of nitrogen
Presence of oxygen
4)
Anaerobic respiration by yeast produces
Alcohol
CO₂
Wine and beer
All of these
5)
The breakdown of pyruvate to give carbon dioxide, water and energy takes place in
Chloroplast
Cytoplasm
Nucleus
Mitochondria
6)
What are the products obtained by anaerobic respiration in plants?
Ethanol + Carbon dioxide + Energy
Lactic acid + Energy
Carbon dioxide + Water + Energy
Pyruvate
7)
When air is blown from mouth into a test-tube containing lime water, the lime water turned milky due to the presence of
Carbon dioxide
Nitrogen
Oxygen
Water vapour
8)
The fermentation of glucose by yeast normally yields
Lactic acid, CO₂ and 2 ATP
Alcohol, CO₂ and 2 ATP
CO₂, H₂O and 36 ATP
Alcohol, CO₂ and 36 ATP
9)
What is the smell of the sugar solution after adding yeast to it?
Fruity smell
Pungent smell
Musky smell
Alcoholic smell
10)
Fermentation producing lactic acid is called as ........?
Alcohol fermentation
Acetic acid fermentation
Lactic acid fermentation
Butyric acid fermentation