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प्रश्न
Draw the Haworth projection structure of the following.
α-D-(–)-Fructofuranose
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उत्तर
Haworth projection formula of α-D-(–)-fructofuranose:
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संबंधित प्रश्न
Glucose on oxidation with dilute nitric acid gives _______________
Write the name of the unit to which glucose unit is linked to from sucrose.
Classify the following carbohydrates into monosaccharide, disaccharide, oligosaccharide and polysaccharide:
glucose, cellulose, maltose, stachyose
What is the action of the following reagents on glucose?
hydroxylamine
Write a chemical reaction to convert glucose into glucose cyanohydrin.
Write a commercial method for preparation of glucose.
By which of the following process formation of glycosidic bond occurs?
Identify the bond that links the carbon of two adjacent monosaccharides.
Which of the following monosaccharides is a tetrose sugar?
Which of the following carbohydrate is sweet to taste?
Formation of lactose by conden ation results in the release of how many molecules of water?
______ is the prosthetic group of glycoproteins.
From the following identify the materials that are made up of cellulose.
i. Plant cell wall
ii. Exoskeleton of arthropods
iii. Paper from plant pulp
iv. Cotton fibre
Identify the WRONG statement.
Which among the following compounds is obtained when glucose reacts with hydrogen cyanide?
By which of the following feature we can identify the relatively small DNA molecules of plasmids?
Match the Column I and Column II select the correct option.
| Column I | Column II | ||
| i. | Monosaccharides | a. | Stored energy in animals |
| ii. | Glycogen | b. | Polymer made from ß-glucose molecules |
| iii. | Cellulose | c. | Exoskeleton of arthropods |
| iv. | Chitin | d. | Building blocks of carbohydrates |
| e. | Plant hormone |
The number of asymmetric carbon atoms in the glucose molecule is ____________.
____________ do not give smaller sugar units on hydrolysis.
All these carbohydrates contain \[\ce{1 -> 4β}\] glycosidic linkage, EXCEPT ____________.
4-O-(α-D-Glucopyranosyl)-D-glucopyranose is ____________.
One mole of a carbohydrate on hydrolysis gives one mole of glucose and one mole of galactose. Identify the carbohydrate.
Which one of the following is Tetrose sugar?
Which of the following molecules reduces Fehling's solution?
How many moles of fructose and galactose respectively are obtained on hydrolysis of 1 mole stachyose?
Identify the number of secondary carbon atoms in glucose.
When 2 moles of stachyose is hydrolyzed, the number of moles of galactose obtained is ____________.
Which among the following sugars does not reduce Tollen's reagent?
What is the quantity of glucose obtained when 68.4 g of sucrose is hydrolyzed in laboratory under ideal condition?
(Molar mass of sucrose = 342 g mol−1)
What is the molecular formula of glyceraldehyde?
Which among the following is a product of hydrolysis of one mole raffinose?
How many hydroxyl groups are present in Erythrulose?
Which one of the following rotates the plane polarized light towards left?
Assertion: A solution of sucrose in water is dextrorotatory. But on hydrolysis in the presence of little hydrochloric acid, it becomes levorotatory.
Reason: Sucrose hydrolysis gives equal amounts of glucose and fructose. As a result of this change in sign of rotation is observed.
The number of sp2 and sp3 hybridised carbon in fructose are respectively ____________.
Glucose is an aldose. Which one of the following reactions is not expected with glucose?
Which of the following are epimers?
What are reducing and non-reducing sugars?
Why carbohydrates are generally optically active?
Classify the following into monosaccharides, oligosaccharides and polysaccharides.
Lactose
Which one is a non-reducing commercial sugar?
Consider the following reaction
\[\ce{A <-[Br2 - H2O] Glucose ->[HNO3] B}\]
Here, 'A' and 'B' are respectively.
Identify the product obtained in the following conversion.
\[\ce{Glucose ->[(O)][Br2 water] Product}\]
\[\ce{CH2OH - CO - (CHOH)4 - CH2OH}\] is an example of ______.
Why carbohydrates are generally optically active.
Assign D/L configuration to the following monosaccharides:
Describe the action of the following reagent on glucose:
Bromine water
Explain the hydrolysis of sucrose.
Why carbohydrates are generally optically active.
The linkage present in Lactose is ______.
CH2 OH - CO - (CHOH)4 - CH2 OH is an example of ______.
\[\ce{CH2OH-CO-(CHOH)4-CH2OH}\] is an example of ______.
Why carbohydrates are generally optically active?
