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महाराष्ट्र राज्य शिक्षण मंडळएचएससी विज्ञान (सामान्य) इयत्ता १२ वी

Write a chemical reaction to convert glucose into glucose cyanohydrin. - Chemistry

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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

Give scientific reasons:

The disaccharide sucrose gives negative Tollens test while the disaccharide maltose gives a positive Tollens test.


Give two evidences for presence of formyl group in glucose.


Glucose on oxidation with dilute nitric acid gives _______________


Classify the following carbohydrates into monosaccharide, disaccharide, oligosaccharide and polysaccharide:

glucose, cellulose, maltose, stachyose


What is the action of the following reagents on glucose?

acetic anhydride


Define carbohydrates.


Draw the Haworth projection structure of the following.

α-D-(–)-Fructofuranose


Explain D and L configuration in sugars.


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


Which of the following type of carbohydrates cannot be hydrolyzed?


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


Which of the following is the basic unit of carbohydrates?


Formation of lactose by conden ation results in the release of how many molecules of water?


Carbohydrates can contain which of the following chemical groups?


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?


Identify a non-reducing carbohydrate from the following.


The number of asymmetric carbon atoms in the glucose molecule is ____________.


Monosaccharides are ______ in nature.


Which among the following type of linkages is present in cellulose?


Which element among the following is not present in saccharine?


The general formula for polysaccharide is ____________.


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


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?


On hydrolysis sucrose gives ____________.


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 reagents is used to obtain gluconic acid from glucose?


Identify the product Y in the following reaction.

\[\ce{Maltose ->[Hydrolysis] X ->[dil. HNO3][(excess)] Y}\]


\[\ce{Glucose ->[(HCN)] Product ->[(hydrolysis)] Product ->[(HI + Heat)] A}\], the compound A is:


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?


α-D (+) Glucose and β-D (+) glucose are ____________.


Classify the following into monosaccharides, oligosaccharides and polysaccharides.

Sucrose


Classify the following into monosaccharides, oligosaccharides and polysaccharides.

Lactose


Which carbon atoms of fructose are bonded together through oxygen forming fructofuranose?


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

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


Which one is a non-reducing commercial sugar?


Identify the product obtained in the following conversion.

\[\ce{Glucose ->[(O)][Br2 water] Product}\]


\[\ce{CH2OH - CO - (CHOH)4 - CH2OH}\] is an example of ______.


\[\ce{CH2OH-CO-(CHOH)4-CH2OH}\] is an example of ______.


Why carbohydrates are generally optically active.


Why carbohydrates are generally optically active?


Assign D/L configuration to the following monosaccharides:


Write the ring structure of glucose.


CH2 OH - CO - (CHOH)4 - CH2 OH is an example of ______.


CH2 OH - CO - (CHOH)4 - CH2 OH is an example of ______.


Why are carbohydrates generally optically active?


\[\ce{CH2OH - CO - (CHOH)4 - CH2 OH}\] is an example of ______.


Why carbohydrates are generally optically active.


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