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(A) Glucose shows mutarotation (R) Glu...

(A) Glucose shows mutarotation
(R) Glucose is in pyranose form and has free anomeric hydroxyl group.

A

Both (A) and (R) are true and (R) is the correct explanation of (A)

B

Both (A) and (R) are true and (R) is not the correct explanation of (A)

C

(A) is true but (R) is false

D

Both (A) and (R) are false

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The correct Answer is:
A
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D -Glucose shows mutarotation because,

Statement-1: Glucose is in pyranose form and has free anomeric hydroxyl group Statement-1: In sucrose, glucose is in pyranose form and fructose is in furanose form.

(A) Sucrose is not a reducing sugar. (R) In sucrose, glucose is in pyranose form and fructose is in furanose form.

(A) In a sucrose molecule, glucose is present in the furanose form and fructose is present in the pyranose form. (R) Pyranose and furanose are homocyclic ring compounds.

Mutarotation is the change in specific rotation of an optically active compound in solution with time to an equilibrium value. Interconversion is possible only if sugar has anomeric hydroxyl group i.e., sugar is reducing. Diastereomers which differ in configuration of chiral carbon developed in hemiacetal formation are called anomers. Epimers are a pair of stereoisomers which differ in the configuration about one of its chiral carbon alpha- glucose and beta- glucose differ in configuration at ______ and are called

Mutarotation is the change in specific rotation of an optically active compound in solution with time to an equilibrium value. Interconversion is possible only if sugar has anomeric hydroxyl group i.e., sugar is reducing. Diastereomers which differ in configuration of chiral carbon developed in hemiacetal formation are called anomers. Epimers are a pair of stereoisomers which differ in the configuration about one of its chiral carbon On which carbon atom glucose and galactose differ in the position of -H and -OH groups?

Mutarotation is the change in specific rotation of an optically active compound in solution with time to an equilibrium value. Interconversion is possible only if sugar has anomeric hydroxyl group i.e., sugar is reducing. Diastereomers which differ in configuration of chiral carbon developed in hemiacetal formation are called anomers. Epimers are a pair of stereoisomers which differ in the configuration about one of its chiral carbon The anomeric carbon in fructose is

AAKASH SERIES-BIOMOLECULES-OBJECTIVE EXERCISE-4 (ASSERTION (A) & REASON (R) TYPE QUESTIONS :)
  1. (A) Fructose has ketone group and does not reduce Tollen's reagent. ...

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  2. (A) All carbohydrates fit in the general formula Cx(H2O)y where x=y ...

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  3. (A) Glucose shows mutarotation (R) Glucose is in pyranose form and h...

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  4. (A) Sucrose is not a reducing sugar. (R) In sucrose, glucose is in p...

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  5. (A) When alpha-D glucose dissolved in water, specific rotation of the ...

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  6. (A) Fructose is the sweetest naturally occuring sugar. (R) Fructose...

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  7. (A) Cellulose is not digested by human beings. (R) Human beings are ...

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  8. (A) Hydrolysis of sucrose is called inversion of cane sugar. (R) Sucr...

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  9. (A) In a sucrose molecule, glucose is present in the furanose form and...

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  10. (A) Reducing sugars undergo mutarotion. (R) During mutarotation, one...

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  11. (A) Galactose is the C4 epimer of glucose. (R) Glucose and galacto...

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  12. (A) Sucrose is an example of reducing sugar. (R) Sucrose gives silve...

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  13. (A) Two different hexoses may give the same osazone. (R) Different H...

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  14. (A) alpha-D (+) Glucose and beta-D(+) - Glucose are enantiomers. (R)...

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  15. (A) Reduction of glucose with sodium borohydride gives sorbitol. (R)...

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  16. (A) Glucose and fructose give the same osazone. (R) Glucose and fruc...

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  17. (A): Fructose gives positive Tollen's test. (R) : Fructose is a Keto...

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  18. (A) Cane sugar undergoes inversion in aqueous solution. (R) Cane sug...

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  19. (A) C6 H(10) O5 is a carbohydrates. (R) Most of the carbohydrates ha...

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  20. (A) Lactose is a reducing sugar. (R) Lactose contains glucose and ga...

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