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Question

Assertion: Sugar is fermented to produce alcohol in industries.
Reason: Oxygen is produced as a by product during the fermentation of sugar.

A
Both the assertion and reason are true and the reason is the correct explanation of the assertion
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B
Both the assertion and reason are true but the reason is not the correct explanation for the assertion
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C
The assertion is true but the reason is false
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D
Both assertion and the reason are false
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Solution

The correct option is C The assertion is true but the reason is false
Fermentation is an enzyme catalysed process, where organisms convert sugar to alcohol or an acid anaerobically. It is widely used in the production of yogurt, bread, and alcoholic beverages like beer, wine, whisky, etc.

Saccharomyces cerevisiae, is used to convert the sugars present in malted cereals, fruit juices, etc. into alcohol and carbon dioxide under anaerobic conditions. This process is called alcoholic or ethanol fermentation. Carbon dioxide, and not oxygen, is the by product in this reaction.

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