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Which of the following indicates the pre...

Which of the following indicates the presence of `5-OH` groups in glucose.

A

Penta-acetyl derivative of glucose

B

Cyanohydrin formation of glucose

C

Reaction with fehling's solution

D

Reaction with Tollen's reagent

Text Solution

Verified by Experts

The correct Answer is:
A
Glucose when reacts with acetic anhydride forms pentaacetate derivative which indicates the presnece of `5-OH` groups in glucose.
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Describe laboratory method for preparation of glucose . Write the reaction that indicates the presence of - CHO group in glucose .

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Knowledge Check

  • Which of the following indicate the presence of -OH group in -COOH group of the acetic acid (CH_(3)COOH) :

    A
    `3CH_(3)COOH+PCl_(5)rarr 2CH_(3)COCl+H_(3)PO_(3)`
    B
    `H_(3)C-COOH+SOCl_(2)rarr CH_(3)COCl +SO_(2)+HCl`
    C
    `CH_(3)COOH+NaOH rarr CH_(3)CO Ona+ H_(2)O`
    D
    Both (a) and (b)

  • Which of the following indicates the number of free -OH groups in an oil or fat

    A
    Iodine value
    B
    Acid value
    C
    Acetyl value
    D
    Saponification value

  • Which of the following reagent is used to detect the presence of -OH groups on adjacent carbon atoms?

    A
    conc. `H_(2)SO_(4)`
    B
    Ozone
    C
    `HIO_(4)`
    D
    Conc. `HNO_(3)`

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