Question
A disaccharide X cannot be oxidised by bromine water. The acid hydrolysis of X leads to a laevorotatory solution. The disaccharide X is
JEE Advanced
Chemistry
Biomolecules
2023
JEE Advanced 2023 (Paper 2)
JEE Advanced Chemistry Question (2023) — Solution
Options
- A.
- B.
- C.
- D.
Answer
A.
Step-by-step 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-glucopyranose and β -D-fructofuranose, the mixture is laevorotatory.
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