When glucose is treated with dilute $N a O H$ , it gives a mixture of D-glucose and:

L-glucose and D-fructose

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D-fructose and L-mannose

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D-fructose and D-mannose

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L-fructose and L-mannose

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Solution

The correct option is D D-fructose and D-mannose
When glucose is treated with dilute $N a O H$ , it gives a mixture of $D$ -glucose, $D$ -mannose and $D$ -fructose. This reaction is known as Lobry de Bruyn-van Ekenstein rearrangement. In this reaction, glucose undergoes a reversible isomerisation.
$D$ -glucose $⇌$ $D$ -fructose $⇌$ $D$ -mannose

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Similar questions

Q. Same osazone derivative is obtained in case of D-glucose, D-mannose and D-fructose, due to:

Q. Glucose, mannose and fructose give identical osazones.

If true enter 1,if false enter 0.

Q. D-Glucose, D-Mannose and D-Fructose from same osazone on reaction with phenylhydrazine because they have same configuration at carbons

x, y

and

z

x + y + z = ?

$G l u c o s e$ $+ C H_{3} O H H C l (g) \to$	(1)Mannose
$S u c r o s e$ $+ H_{3} O^{+} \to$	(2) Galactose
$F r u c t o s e$ $B a s e \to$	(3) Glucose
$L a c t o s e$ $+ H_{3} O^{+} \to$	(4) Fructose
	(5) Glucoside

Structure of disaccharide formed by glucose and fructose is given below. Identify anomeric carbon atoms in monosaccharide units.

(a) 'a' carbon of glucose and 'a' carbon of fructose
(b) 'a' carbon of glucose and 'e' carbon of fructose
(c) 'a' carbon of glucose and 'b' carbon of fructose
(d) 'f'' carbon of glucose and 'f'' carbon of fructose

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When glucose is treated with dilute NaOH, it gives a mixture of D-glucose and:

When glucose is treated with dilute $N a O H$ , it gives a mixture of D-glucose and: