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Question

Consider the reaction sequence - GlucosePhNHNH2−−−−−−excessPH3O+−−ΔQZn−−AcOHR The product R is :

A
Arbinose
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B
Sorbitol
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C
Fructose
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D
Mannose
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Solution

The correct option is C Fructose
Glucose reacts with excess of phenyl hydrazine to form glucosazone. On hydrolysis followed by reduction with Zn/AcOH, fructose is obtained.
379881_296470_ans_1e766f791d2f4f018c3e4484f6b1d311.png

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