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  4. Which of the following set of molecules give same osazone when reacted with excess of phenylhydrazine :-

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Q. Which of the following set of molecules give same osazone when reacted with excess of phenylhydrazine :-

NTA AbhyasNTA Abhyas 2022

Solution:

Glucose and fructose are tautomers of each other. Both shown nucleophilic addition reaction with phenylhydrazine and use its three moles to form osazone as shown in reaction:
Solution