JEE Main Chemistry question

Glucose with excess phenylhydrazine forms:

(A)Fructosazone
(B)Glucose phenylhydrazone
(C)GlucosazoneCorrect
(D)Phenyl hydrazone of glucosazone

Answer: (C)

Solution

With one equivalent of phenylhydrazine, glucose first forms the simple phenylhydrazone; with excess phenylhydrazine, further oxidation and condensation at C1–C2 gives the characteristic yellow crystalline osazone, glucosazone. Since

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Question ID VK-151061