What is essentially the difference between - glucose and - glucos… - Vidyadip

Question

What is essentially the difference between $\alpha\ -$ glucose and $\beta\ -$ glucose? What is meant by pyranose structure of glucose?

✓

Answer

$\alpha\ -$ glucose $\beta\ -$ glucose differ only in the orientation of the hydroxyl group at $C_1$ position.
In $\alpha\ -$ glucose the $\ce{OH}$ group is on right $-$ hand side at $C_1$ position whereas in $\beta\ -$ glucose the $\ce{OH}$ group is on left $-$ hand side at $C_1$ position.
The six $-$ membered hetero cyclic structure of glucose is called pyranose structure.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "3 Marks Question" from Biomolecules→Biomolecules — all question types→Chemistry STD 12 Science question papers→Rajasthan Board STD 12 Science question papers→Rajasthan Board question paper generator→

Similar questions

Complete the following equations :
(a) (i) $2 MnO _2+4 KOH + O _2 \xrightarrow{\Delta}$
(ii) $Cr _2 O _7^{2-}+14 K^{+}+6 I ^{-} \longrightarrow$
(b) The elements of 3rd transition series are given as :
Sc Ti V Cr Mn Fe Co Ni Cu Zn
(i) Write the element which is not regarded as a transition element. Give reason.
(ii) Which element has the highest melting point.
(iii) Write the element which can show an oxidation state of +1 .
(iv) Which element is a strong oxidizing agent in +3 oxidation state and why?

How many gram of $Al$ metal will be obtained at the cathode by passing $0.1$ Faraday electric current in $\text{AlCl} _3$ solution? $($Atomic mass of $Al =27)$

An organic compound $(A) ($molecular formula $C_8H_{16}0_2)$ was hydrolysed with dilute sulphuric acid to give a carboxylic acid $(B)$ and an alcohol $(C).$ Oxidation of $(C)$ with chromic acid produced $(B).\ (C)$ on dehydration gives but$-1-$ene. Write equations for the reactions involved.

Determine the osmotic pressure of a solution prepared by dissolving $25\ mg$ of $K_2SO_4$ in $2$ litre of water at $25^\circ C,$ assuming that it is completely dissociated.

While filling up of electrons in the atomic orbitals, the 4s orbital is filled before the 3d orbital but reverse happens during the ionisation of the atom. Explain why?

Name the reagents which are used in the following conversions:
i. A primary alcohol to an aldehyde
ii. Butan-2-one to butan-2-ol
iii. Phenol to 2, 4, 6-tribromophenol

Short note on: Maltose

Explain types of Electrodes with examples

What are enantiomers? Draw the structures of the possible enantiomers of 3-methylpent-1-ene.

What mass of $\text{NaCl} ($molar mass $= 58.5\ g\ mol^{–1})$ must be dissolved in $65\ g$ of water to lower the freezing point by $7.50^\circ C$? The freezing point depression constant, $K_f,$ for water is $1.86\ K \ kg\ mol^{–1}.$ Assume van’t Hoff factor for $\text{NaCl}$ is $1.87.$