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Q.

Glucose reacts with bromine water to produce:


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a

Glyceraldehyde

b

Gluconic acid

c

Saccharic acid

d

Glucaric acid 

answer is B.

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Detailed Solution

Concept: Bromine water is known to be a weak oxidising agent. It solely converts the glucose aldehydic group to carboxylic acid. In the chain, the other OH is unaffected. Another well-known fact about glucose is that it is a six-membered chain with just one aldehydic group.
We are aware that the chemical formula for glucose is C 6 H 12 O 6 . It has six carbon atoms and one CHO group, making it a monosaccharide. Therefore, the CHO group will oxidise to COOH COOH when bromine water, a weak oxidising agent, is introduced to glucose. The resultant substance is gluconic acid.
This chemistry shift can be expressed as:
Question ImageHence, the correct answer is option 2.
 
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