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प्रश्न
Differentiable between the following:
Amylose and Amylopectin
उत्तर १
Amylose:
- Water soluble components
- Constitutes 15-20% of starch
Amylopectin:
- Water insoluble component
- Constitutes 80-85% starch.
उत्तर २
| Amylose | Amylopectin | |
| (a) | Only C1− C4 glycosidic linkage | C1− C4 glycosidic linkage but, branching occurs by C1− C6 glycosidic linkage |
| (b) | Water-soluble component of starch (15-20%) | Water-insoluble component of starch (80-85%) |
संबंधित प्रश्न
Draw the simple Fisher projection formulae of D - (+) - glucose and D - (-) - fructose
How many moles of acetic anhydride will be required to form glucose pentaacetate from 2M of glucose?
(a) 2
(b) 5
(c) 10
(d) 2.5
What do you observe when glucose is treated with bromine water?
What is the most abundant organic compound on earth?
In the following reaction, identify A and B:
\[\begin{array}{cc}
\ce{C6H12O6 ->[Acetic anhydride] A}\\
\downarrow \text{Conc. nitric acid}\phantom{...}\\
\ce{B}\phantom{.................}\end{array}\]
Write the reactions of D-glucose which can’t be explained by its open-chain structure. How can cyclic structure of glucose explain these reactions?
Consider the following reactions:
(i) \[\ce{Glucose + R-OH ->[Conc. HNO3] [A] ->[X eq of][(CH3CO)2O] Acetyl derivative}\]
(ii) \[\ce{Glucose ->[Ni/H2] [A] ->[Y eq of][(CH3CO)2O] Acetyl derivative}\]
(iii) \[\ce{Glucose ->[Z eq of][(CH3CO)2O] Acetyl derivative}\]
'X, 'Y' and 'Z' in these reactions are respectively:
When D-glucose reacts with HI, it forms ______.
Give the reaction of glucose with hydrogen cyanide. Presence of which group is confirmed by this reaction?
Give a reason for the following observations:
Penta-acetate of glucose does not react with hydroxylamine.
