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CHXII14:BIOMOLECULES

324661 Identify the reagent $R$ used in following conversion.
$Glucose \overset{R}{\to} n - hexane$

1

HI, Δ

2

{NH}_{2} OH

3

HCN

4

{HNO}_{3}

Explanation:

$CHO - \underset{Glucose}{{(CHOH)}_{4}} - C H_{2} OH \overset{HI, Δ}{\to}$
$\underset{n - Hexane}{C H_{3}} - {(C H_{2})}_{4} - C H_{3}$

MHTCET - 2021

CHXII14:BIOMOLECULES

324662 The reaction of glucose with acetic anhydride and Tollen's reagent suggest that it is

1 A pentahydroxy aldehyde

2 Hydrate of carbon

3 Polyhydroxy ketone

4 An alcohol

Explanation:

Acetylation of glucose with acetic anhydride gives glucose pentaacetate which confirms the presence of five $- OH$ groups. Aldehydes are identified by using Tollen's reagent test.

CHXII14:BIOMOLECULES

324663 Number of chiral carbon atoms in $β - D - (+)$ glucose is

1 five

2 six

3 three

4 four

Explanation:

supporting img
Five chiral atoms present in $β - D -$ Glucose

CHXII14:BIOMOLECULES

324664 Which reagent oxidizes glucose to saccharic acid?

1 dil.

{HNO}_{3}

2

{NH}_{2} OH

3

HCN

4

{Br}_{2}

water

MHTCET - 2021

CHXII14:BIOMOLECULES

324661 Identify the reagent $R$ used in following conversion.
$Glucose \overset{R}{\to} n - hexane$

1

HI, Δ

2

{NH}_{2} OH

3

HCN

4

{HNO}_{3}

Explanation:

$CHO - \underset{Glucose}{{(CHOH)}_{4}} - C H_{2} OH \overset{HI, Δ}{\to}$
$\underset{n - Hexane}{C H_{3}} - {(C H_{2})}_{4} - C H_{3}$

MHTCET - 2021

CHXII14:BIOMOLECULES

324662 The reaction of glucose with acetic anhydride and Tollen's reagent suggest that it is

1 A pentahydroxy aldehyde

2 Hydrate of carbon

3 Polyhydroxy ketone

4 An alcohol

Explanation:

Acetylation of glucose with acetic anhydride gives glucose pentaacetate which confirms the presence of five $- OH$ groups. Aldehydes are identified by using Tollen's reagent test.

CHXII14:BIOMOLECULES

324663 Number of chiral carbon atoms in $β - D - (+)$ glucose is

1 five

2 six

3 three

4 four

Explanation:

supporting img
Five chiral atoms present in $β - D -$ Glucose

CHXII14:BIOMOLECULES

324664 Which reagent oxidizes glucose to saccharic acid?

1 dil.

{HNO}_{3}

2

{NH}_{2} OH

3

HCN

4

{Br}_{2}

water

MHTCET - 2021

CHXII14:BIOMOLECULES

324661 Identify the reagent $R$ used in following conversion.
$Glucose \overset{R}{\to} n - hexane$

1

HI, Δ

2

{NH}_{2} OH

3

HCN

4

{HNO}_{3}

Explanation:

$CHO - \underset{Glucose}{{(CHOH)}_{4}} - C H_{2} OH \overset{HI, Δ}{\to}$
$\underset{n - Hexane}{C H_{3}} - {(C H_{2})}_{4} - C H_{3}$

MHTCET - 2021

CHXII14:BIOMOLECULES

324662 The reaction of glucose with acetic anhydride and Tollen's reagent suggest that it is

1 A pentahydroxy aldehyde

2 Hydrate of carbon

3 Polyhydroxy ketone

4 An alcohol

Explanation:

Acetylation of glucose with acetic anhydride gives glucose pentaacetate which confirms the presence of five $- OH$ groups. Aldehydes are identified by using Tollen's reagent test.

CHXII14:BIOMOLECULES

324663 Number of chiral carbon atoms in $β - D - (+)$ glucose is

1 five

2 six

3 three

4 four

Explanation:

supporting img
Five chiral atoms present in $β - D -$ Glucose

CHXII14:BIOMOLECULES

324664 Which reagent oxidizes glucose to saccharic acid?

1 dil.

{HNO}_{3}

2

{NH}_{2} OH

3

HCN

4

{Br}_{2}

water

MHTCET - 2021

CHXII14:BIOMOLECULES

324661 Identify the reagent $R$ used in following conversion.
$Glucose \overset{R}{\to} n - hexane$

1

HI, Δ

2

{NH}_{2} OH

3

HCN

4

{HNO}_{3}

Explanation:

$CHO - \underset{Glucose}{{(CHOH)}_{4}} - C H_{2} OH \overset{HI, Δ}{\to}$
$\underset{n - Hexane}{C H_{3}} - {(C H_{2})}_{4} - C H_{3}$

MHTCET - 2021

CHXII14:BIOMOLECULES

324662 The reaction of glucose with acetic anhydride and Tollen's reagent suggest that it is

1 A pentahydroxy aldehyde

2 Hydrate of carbon

3 Polyhydroxy ketone

4 An alcohol

Explanation:

Acetylation of glucose with acetic anhydride gives glucose pentaacetate which confirms the presence of five $- OH$ groups. Aldehydes are identified by using Tollen's reagent test.

CHXII14:BIOMOLECULES

324663 Number of chiral carbon atoms in $β - D - (+)$ glucose is

1 five

2 six

3 three

4 four

Explanation:

supporting img
Five chiral atoms present in $β - D -$ Glucose

CHXII14:BIOMOLECULES

324664 Which reagent oxidizes glucose to saccharic acid?

1 dil.

{HNO}_{3}

2

{NH}_{2} OH

3

HCN

4

{Br}_{2}

water

MHTCET - 2021