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

Question

Which of the following set of molecules give same osazone when reacted with excess of phenylhydrazine :- (A) Glucose and fructose (B) Fructose and galactose (C) Glucose and galactose (D) Galactose and mannose

Tardigrade Admin · Accepted Answer

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: <img class="img-fluid question-image" alt="Solution" src="https://cdn.tardigrade.in/q/nta/c-v9nu4vijkftf9cmn.jpg" />

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

Glucose and fructose

Fructose and galactose

Glucose and galactose

Galactose and mannose

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: