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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Write a chemical reaction to convert glucose into glucose cyanohydrin.

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प्रश्न

Write a chemical reaction to convert glucose into glucose cyanohydrin.

टीपा लिहा
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उत्तर

Glucose forms cyanohydrin on reaction with hydrogen cyanide:

\[\begin{array}{cc}
\phantom{...........}\ce{CN}\\
\phantom{.........}|\\
\phantom{}\ce{CHO}\phantom{..........}\ce{CHOH}\phantom{..}\\
\phantom{}|\phantom{...............}|\phantom{.......}\\
\phantom{}\ce{(CHOH)4 ->[HCN] (CHOH)4}\phantom{}\\
\phantom{}|\phantom{...............}|\phantom{.......}\\
\phantom{..........}\ce{\underset{\text{Glucose}}{CH2OH} \phantom{....}\underset{\text{Glucose cyanohydrin}}{CH2OH}}\phantom{........}
\end{array}\]

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पाठ 14: Biomolecules - Short Answer Questions (Type-II)

व्हिडिओ ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्‍न

Draw a neat diagram for the following:

Haworth formula of glucopyranose.


Draw the structure of α-D glucopyranose.


Write the name of the unit to which glucose unit is linked to from sucrose.


Write chemical reaction for following conversions

glucose into glucoxime


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 commercial method for preparation of glucose.


Draw the structure of the pyran.


By which of the following process formation of glycosidic bond occurs?


Identify the substances having glycosidic bond and peptide bond, respectively in their structure:


From the following identify the group that is exclusively consists of polysaccharides.


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?


____________ do not give smaller sugar units on hydrolysis.


From the following identify the two types of glucose polymers present in starch.


Which reagent among the following is used to confirm presence of aldehydic carbonyl group in glucose?


Prolonged heating of glucose with hot HI results in the formation of ____________.


One mole of a carbohydrate on hydrolysis gives one mole of glucose and one mole of galactose. Identify the carbohydrate.


Which of the following monosaccharide is a ketohexose?


The general formula for polysaccharide is ____________.


Which one of the following is a carbohydrate but does NOT follow the general formula of carbohydrate?


Which one of the following is NOT soluble in water?


Glucose and gluconic acid treated with dilute nitric acid forms saccharic acid. What does this indicate?


What is the number of hydroxyl groups present in lactic acid?


Identify the number of secondary carbon atoms in glucose.


Which of the following statement is NOT true about saccharic acid?


On hydrolysis sucrose gives ____________.


What is the product obtained when Br2 water reacts with glucose?


When one mole of lactose is hydrolysed, the hydrolysate contains ____________.


Which among the following observations suggests that glucose also exists in cyclic form?


The number of sp2 and sp3 hybridised carbon in fructose are respectively ____________.


Complete hydrolysis of cellulose gives ____________.


Glucose is an aldose. Which one of the following reactions is not expected with glucose?


Why carbohydrates are generally optically active?


Classify the following into monosaccharides, oligosaccharides and polysaccharides.

Starch


Classify the following into monosaccharides, oligosaccharides and polysaccharides.

Sucrose


Classify the following into monosaccharides, oligosaccharides and polysaccharides.

Maltose


Write the structure of α-D (+) glucopyranose.


Lactose is made of ______.


The two monosaccharides in a disaccharide are held together by ______ bonds.

 


Corn is immersed in boiling water. It is then cooled, and the solution becomes sweet. It is due to ______.


Starch and cellulose are compounds made up of many units of ______.


Formation of gluconic acid from glucose by oxidation using Br2 water.


The glycosidic linkage present in maltose is ______.


Why carbohydrates are generally optically active.


Carbohydrates that do not undergo hydrolysis further are called ______.


Explain the hydrolysis of sucrose.


Write the ring structure of glucose.


Why carbohydrates are generally optically active.


The linkage present in Lactose is ______.


Why carbohydrates are generally optically active.


Which of the following is used to separate glucose and fructose from hydrolysate of sucrose?


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