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QJEEAdv23Ch472c: JEE Advanced 2023 Chemistry - Class 12 JEEAdv23Ch472c Solution: A disaccharide cannot be oxidised by bromine water. The acid…

A disaccharide X\mathbf{X} cannot be oxidised by bromine water. The acid hydrolysis of X\mathbf{X} leads to a laevorotatory solution. The disaccharide X\mathbf{X} is :

Multiple Choice Options

  • A https://ik.imagekit.io/novatra/photos/e5006ecc563337989feda75ff710fc3b08b09444fbbb029de0b4f8a4efb9346a.webp
  • B https://ik.imagekit.io/novatra/photos/b0b837a3c808d6c32256028b4b4489102fdbc0d6baffe5ea23fa47cb34a2e4bf.webp
  • C https://ik.imagekit.io/novatra/photos/601c01d7d8a9cfe3eaeb8bcff423426d52e5c3e7c572c1eb606bf9880572fdbc.webp
  • D https://ik.imagekit.io/novatra/photos/620422fc905d3e074bd8788b444b74cabd7ef8ba8f4e621fe416e287a7e6b7c5.webp

Step-by-Step Verified Solution

A and D cannot be oxidised by bromine water as they do not have hemiacetal linkage.

The acid hydrolysis of A leads to a laevorotatory solution.

A is sucrose which is dextrorotatory, on acid hydrolysis gives mixture of α-D-glucose and β-D-fructose, the mixture is laevorotatory

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