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प्रश्न
Write chemical reaction for following conversions
glucose into gluconic acid
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उत्तर
Glucose gets oxidised to a six carbon monocarboxylic acid called gluconic acid on reaction with bromine water which is a mild oxidizing agent.
\[\begin{array}{cc}
\phantom{}\ce{CHO}\phantom{...................}\ce{COOH}\phantom{.}\\
\phantom{}|\phantom{.......................}|\phantom{......}\\
\phantom{}\ce{(CHOH)4 + [O] ->[Br2 water]\phantom{}(CHOH)4}\phantom{}\\
\phantom{}|\phantom{.......................}|\phantom{......}\\
\phantom{..}\ce{\underset{\text{Glucose}}{CH2OH} \phantom{...............}\underset{\text{Gluconic acid}}{CH2OH}}\phantom{}
\end{array}\]
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संबंधित प्रश्न
Give scientific reasons:
The disaccharide sucrose gives negative Tollens test while the disaccharide maltose gives a positive Tollens test.
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Draw a neat diagram for the following:
Haworth formula of maltose
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Classify the following carbohydrates into monosaccharide, disaccharide, oligosaccharide and polysaccharide:
glucose, cellulose, maltose, stachyose
Explain the classification of carbohydrates with examples.
Draw the Haworth projection structure of the following.
α-D-(–)-Fructofuranose
Write a chemical reaction to convert glucose into glucose cyanohydrin.
By which of the following process formation of glycosidic bond occurs?
Formation of lactose by conden ation results in the release of how many molecules of water?
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From the following identify the group that is exclusively consists of polysaccharides.
______ is the prosthetic group of glycoproteins.
Identify the sugar having the molecular formula C6H1206.
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Identify the WRONG statement.
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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 |
Chitin is a/an ______.
____________ do not give smaller sugar units on hydrolysis.
Monosaccharides are ______ in nature.
Identify the CORRECT combination.
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4-O-(α-D-Glucopyranosyl)-D-glucopyranose is ____________.
Which element among the following is not present in saccharine?
Which one of the following is Tetrose sugar?
Which one of the following is NOT soluble in water?
Which among the following statements is true for amylose?
How many moles of fructose and galactose respectively are obtained on hydrolysis of 1 mole stachyose?
What is the number of hydroxyl groups present in lactic acid?
Which among the following reagents is used for conversion of glucose to glucoxime?
What is the molecular formula of glyceraldehyde?
How many moles of acetic acid are obtained in the reaction when one mole glucose is treated with excess acetic anhydride?
What is the product obtained when Br2 water reacts with glucose?
When one mole of lactose is hydrolysed, the hydrolysate contains ____________.
Which of the following groups contain polysaccharides?
The molecule of glucose is also called ______.
Glucose on oxidation with bromine water yields gluconic acid. This reaction confirms the presence of ______.
A molecule of stachyose contains how many carbon atoms?
Match the Column I with Column II and choose the correct answer from options below:
| Column I | Column II |
| A. Purine | 1. Glycogen |
| B. Pyrimidine | 2. Cellulose |
| C. Structural polysaccharide | 3. Glucagon |
| D. Storage polysaccharide | 4. Adenine |
| 5. Cytosine |
Corn is immersed in boiling water. It is then cooled, and the solution becomes sweet. It is due to ______.
Which one is a non-reducing commercial sugar?
Formation of gluconic acid from glucose by oxidation using Br2 water.
Assign D/L configuration to the following monosaccharides:
Describe the action of the following reagent on glucose:
dil. Nitric acid.
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Why carbohydrates are generally optically active?
Why carbohydrates are generally optically active?
\[\ce{CH2OH-CO-(CHOH)4-CH2OH}\] is an example of ______.
\[\ce{CH2OH - CO - (CHOH)4 - CH2OH}\] is an example of ______.
Two monosaccharides are held together by ______ bond.
