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In a D-galactopyranose the vicinal hydro...

In a `D`-galactopyranose the vicinal hydroxyl groups are cis to each other-
.

A

B

`CH_(3)-underset(OH)underset(|)(CH)-CH_(3)`

C

`CH_(3)COOH`

D

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The correct Answer is:
A
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A reaction characteristic of vicinal diols is their oxidative cleavage on treatment with periodic acid (HIO_(4)) . The carbon-carbon bond of the vicinal diol uinit is broken and two carbonyl groups result. Periodic acid is reduced to iodic acid (HIO_(3)) Cyclic diols react to give dicarbonyl compounds. The reactions are faster when the hydroxyl gorups are cid than when they are trans but both stereoisomers are oxidised by periodic acid. Periodic acid cleavage of vicinal diols is often used for analytic purposes as an aid in structure determination. By identifying the carbonyl compounds produced, The constitution of the diol may be deduced. The compound 'X' in above reaction is :

A reaction characteristic of vicinal diols is their oxidative cleavage on treatment with periodic acid (HIO_(4)) . The carbon-carbon bond of the vicinal diol uinit is broken and two carbonyl groups result. Periodic acid is reduced to iodic acid (HIO_(3)) Cyclic diols react to give dicarbonyl compounds. The reactions are faster when the hydroxyl gorups are cid than when they are trans but both stereoisomers are oxidised by periodic acid. Periodic acid cleavage of vicinal diols is often used for analytic purposes as an aid in structure determination. By identifying the carbonyl compounds produced, The constitution of the diol may be deduced. Which of the following compounds (s) is / are obtained when the following compound is oxidixed by HIO_(4) ?

A reaction characteristic of vicinal diols is their oxidative cleavage on treatment with periodic acid (HIO_(4)) . The carbon-carbon bond of the vicinal diol uinit is broken and two carbonyl groups result. Periodic acid is reduced to iodic acid (HIO_(3)) Cyclic diols react to give dicarbonyl compounds. The reactions are faster when the hydroxyl gorups are cid than when they are trans but both stereoisomers are oxidised by periodic acid. Periodic acid cleavage of vicinal diols is often used for analytic purposes as an aid in structure determination. By identifying the carbonyl compounds produced, The constitution of the diol may be deduced. Which of the following diols will be oxidised by HIO_(4) ?

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RESONANCE-BIOMOLECULES-Advanced Level(Part I)
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  2. Which of the following monosaccharides is a pentose?

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  3. On heating glucose with Fehling solution. We get a precipitate whose c...

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  4. Which of the following compound is found abundantly in nature?

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  5. Glucose on reduction with Na//Hg and water gives:

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  6. Glucose or fructose is converted into C(2)H(5)OH in the presence of ?

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  7. Glucose cannot be classified as?

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  8. Milk sugar is commoly known as

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  9. The commonest disaccharide has the molecular formula?

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  10. Starch is changed into disaccharides in pressence of:

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  11. Which carbohydrate is used in silvering of mirros?

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  12. The charing product formed when C(6) H(12) O(6) is heated with cone, H...

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  14. It is best to carry out reaction with sugers in neutral or acidic medi...

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  15. The reagent which forms crystalline osazone derivatives when heated wi...

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  16. Consider following reagent: I. Br(2) water II. Tollen's reagent III....

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  17. The organic compound that will response Fehling's solution test is

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  19. Salicin (structure given below) is a glycoside, found in the bark of w...

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  20. L-Sorbose is the staring material for the synthesis of vitamin C. It c...

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