Which one of the statements concerning the equilibrium shown is true?
- AThe two structures are enantiomers of each other. They have equal but opposite optical rotations and racemize slowly at room temperature.
- BThe two structures are enantiomers of each other. They racemize too rapidly at room temperature for their optical rotations to be measured.
- CThe two structures are diastereomers of each other. Their interconversion is called mutarotation.
- DThe two structures are diastereomers of each other. Their interconversion does not require breaking and making bonds,only a change in conformation.
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Similar Questions
Which one given below is a non-reducing sugar?
Which of the following statements is not true about sucrose?
DifficultJEE MAIN 2019
View SolutionConsider the following molecules:
Glucose $(K)$,Mannose $(L)$,Galactose $(M)$,$\alpha-Glucose$ $(N)$,$\beta-Glucose$ $(O)$
The correct set of epimer and anomer is respectively:
Epimer - Anomer
Glucose $(K)$,Mannose $(L)$,Galactose $(M)$,$\alpha-Glucose$ $(N)$,$\beta-Glucose$ $(O)$
The correct set of epimer and anomer is respectively:
Epimer - Anomer
Medium
View SolutionWhich $L$-sugar on oxidation with $HNO_3$ gives an optically active dibasic acid ($2$ $COOH$ groups)?
Difficult
View SolutionFor 'invert sugar',the correct statement$(s)$ is(are)
(Given: specific rotations of $(+)$-sucrose,$(+)$-maltose,$L-(-)$-glucose and $(+)$-fructose in aqueous solution are $+66^{\circ}, +140^{\circ}, -52^{\circ}$ and $+92^{\circ}$,respectively)
$(A)$ 'invert sugar' is prepared by acid catalyzed hydrolysis of maltose
$(B)$ 'invert sugar' is an equimolar mixture of $D-(+)$-glucose and $D-(-)$-fructose
$(C)$ specific rotation of 'invert sugar' is $-20^{\circ}$
$(D)$ on reaction with $Br_2$ water,'invert sugar' forms saccharic acid as one of the products
(Given: specific rotations of $(+)$-sucrose,$(+)$-maltose,$L-(-)$-glucose and $(+)$-fructose in aqueous solution are $+66^{\circ}, +140^{\circ}, -52^{\circ}$ and $+92^{\circ}$,respectively)
$(A)$ 'invert sugar' is prepared by acid catalyzed hydrolysis of maltose
$(B)$ 'invert sugar' is an equimolar mixture of $D-(+)$-glucose and $D-(-)$-fructose
$(C)$ specific rotation of 'invert sugar' is $-20^{\circ}$
$(D)$ on reaction with $Br_2$ water,'invert sugar' forms saccharic acid as one of the products
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