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Common Disaccharides

For the compl...

Question

For the complex conversion of D-glucose into the corresponding osazone, the minimum number of equivalent of phenyl hydrazine required is:

A

two

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B

three

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C

four

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D

five

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Solution

The correct option is C three
Therefore, $3$ equivalents of $D$ - glucose are required to form corresponding osazone.

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Similar questions

Q. D-glucose is converted into osazone. The number of equivalents of phenyl hydrazine required by one equivalent of D-glucose in this reaction, is:

Q. Glucose molecule reacts with X number of molecules of phenyl-hydrazine to yield osazone. The value of

X

The number of phenylhydrazine molecules required for $1 m o l e c u l e$ of glucose osazone formation is:

Q. Which of the following hexoses will form the same osazone when treated with excess phenyl hydrazine?

Q. Assertion :When the ketohexose, D() fructose is treated with phenyl hydrazine it produces an osazone that is identical with the one prepared from either D-(+) glucose or D-(+) mannose. Reason: Sugars forming same osazone have different configuration

C_{1}

C_{2}

that are involved in osazone formation, the rest four carbon atoms (

C_{3}, C_{4}, C_{5} a n d C_{6}

are same) are identical. Since all belongs to D-Family hence the configuration of last but one asymmetric carbon atom would be the same

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Common Disaccharides

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