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प्रश्न
Write a chemical reaction to convert glucose into glucose cyanohydrin.
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उत्तर
Glucose forms cyanohydrin on reaction with hydrogen cyanide:
\[\begin{array}{cc}
\phantom{...........}\ce{CN}\\
\phantom{.........}|\\
\phantom{}\ce{CHO}\phantom{..........}\ce{CHOH}\phantom{..}\\
\phantom{}|\phantom{...............}|\phantom{.......}\\
\phantom{}\ce{(CHOH)4 ->[HCN] (CHOH)4}\phantom{}\\
\phantom{}|\phantom{...............}|\phantom{.......}\\
\phantom{..........}\ce{\underset{\text{Glucose}}{CH2OH} \phantom{....}\underset{\text{Glucose cyanohydrin}}{CH2OH}}\phantom{........}
\end{array}\]
संबंधित प्रश्न
Give two evidences for presence of formyl group in glucose.
Draw a neat diagram for the following:
Haworth formula of glucopyranose.
The glycosidic linkage in maltose is formed between _______________
Write the name of the polysaccharide used for the commercial preparation of glucose.
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
By which of the following process formation of glycosidic bond occurs?
Which of the following carbohydrate is sweet to taste?
From the following which is a heteropolysaccharide?
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
Which among the following compounds is obtained when glucose reacts with hydrogen cyanide?
Chitin is a/an ______.
Identify the CORRECT combination.
Which carbon atoms of α- D glucopyranose and β-D-fructofuranose respectively are linked together to form glycosidic linkage in sucrose?
Raffinose, sucrose and stachyose are respectively ____________.
Prolonged heating of glucose with hot HI results in the formation of ____________.
Which one of the following is Tetrose sugar?
Which of the following statements is NOT true for glyceraldehyde?
Which of the following molecules reduces Fehling's solution?
Which among the following sugars does not reduce Tollen's reagent?
Identify the number of oxygen atoms present in saccharic acid?
Which among the following reagents is used to obtain gluconic acid from glucose?
How many moles of acetic acid are obtained in the reaction when one mole glucose is treated with excess acetic anhydride?
Which among the following is a product of hydrolysis of one mole raffinose?
When one mole of lactose is hydrolysed, the hydrolysate contains ____________.
How many hydroxyl groups are present in Erythrulose?
Which one given below is a non-reducing sugar?
Complete hydrolysis of cellulose gives ____________.
Which of the following are epimers?
Classify the following into monosaccharides, oligosaccharides and polysaccharides.
Fructose
Is the following sugar, D-sugar or L-sugar?
Lactose is made of ______.
Which carbon atoms of fructose are bonded together through oxygen forming fructofuranose?
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?
Describe the action of the following reagent on glucose:
Bromine water
CH2 OH - CO - (CHOH)4 - CH2 OH is an example of ______.
The linkage present in Lactose is ______.
Why are carbohydrates generally optically active?
Write the Zwitter ion structure of alanine.
Why carbohydrates are generally optically active.
\[\ce{CH2OH - CO - (CHOH)4 - CH2 OH}\] is an example of ______.
\[\ce{CH2OH-CO-(CHOH)4-CH2OH}\] is an example of ______.
Why carbohydrates are generally optically active?
\[\ce{CH2OH - CO - (CHOH)4 - CH2OH}\] is an example of ______.
Why carbohydrates are generally optically active.
Two monosaccharides are held together by ______ bond.
Given below are two statements.
Statement I - Lactose on hydrolysis converts into glucose and galactose.
Statement II - Galactose also plays same role as glucose in respiration.
In light of the above statements, select the correct option given below.
What are the number of chiral carbon atoms and the number of formyl groups, respectively, present in ribose?
Which of the following is used to separate glucose and fructose from hydrolysate of sucrose?
