EASY
Earn 100

What is the product formed by the reduction of fructose?

Important Questions on Biomolecules

EASY
Synthesis of each molecule of glucose in photosynthesis involves
MEDIUM
For 'invert sugar', the correct statement(s) is (are)

(Given: specific rotations of +-sucrose, +-maltose, L---glucose and L-+-fructose in aqueous solution are + 66°, +140°, 52° and + 92°, respectively)
MEDIUM
The Fischer presentation of D-glucose is given below

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The correct structure(s) of β-L- glucopyranose is(are)
MEDIUM
Among the following, the incorrect statement is
HARD

The formulas of A and B for the following reaction sequence are

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MEDIUM
The correct corresponding order of names of four aldoses with configuration given below respectively, is

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MEDIUM
Which one given below is a non-reducing sugar?
EASY
Given the structure of D-+- glucose as

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The structure of L--- glucose is
EASY

Match items of Row I with those of Row II.

Row I:

(P)
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(Q)
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(R)
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(S)
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Row II:

(i) αD() Fructofuranose.

(ii) βD() Fructofuranose.

(iii) αD() Glucopyranose.

(iv) βD() Glucopyranose.

Correct match is

MEDIUM
What are reducing sugars?
EASY
Which of the following compounds will behave as reducing sugar in an aqueous KOH solution?
MEDIUM
Draw the structure of fructose. Mention the number of chiral carbon atoms and number of optical isomers present in it.
EASY
A molecule of Stachyose contains how many carbon atoms?
EASY
Complete hydrolysis of starch gives:
MEDIUM
The incorrect statement among the following is
EASY
Fructose and glucose can be distinguished by:
MEDIUM
If α-D- glucose is dissolved in water and kept for a few hours, the major constituent(s) present in the solution is (are)
EASY

The following carbohydrate is

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HARD
Ketones are normally not reducing. Fructose however is reducing towards Fehling’s solution and Tollens reagent in spite of the fact that it has ketonic group. Give reason.
EASY
What is the carbohydrate containing >C=O (keto) group known as?