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प्रश्न
Write a commercial method for preparation of glucose.
How is glucose prepared on a commercial scale?
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उत्तर
Commercial method for preparation of glucose: Commercially glucose is obtained by hydrolysis of starch by boiling it with dilute sulphuric acid at 393K under 2 to 3 atm pressure.
\[\ce{\underset{\text{Starch}}{(C6H10O5)}_{{n}} + {n}H2O ->[H+][393K, 2-3 atm] \underset{\text{Glucose}}{{n}C6H12O6}}\]
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संबंधित प्रश्न
Glucose on oxidation with dilute nitric acid gives _______________
The glycosidic linkage in maltose is formed between _______________
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
Write chemical reaction for following conversions
glucose into gluconic acid
What is the action of the following reagents on glucose?
hydrogen iodide
Explain D and L configuration in sugars.
Write a chemical reaction to convert glucose into glucose cyanohydrin.
Which of the following type of carbohydrates cannot be hydrolyzed?
From the following identify an example of disaccharides.
Identify the substances having glycosidic bond and peptide bond, respectively in their structure:
Which of the following monosaccharides is a tetrose sugar?
Formation of lactose by conden ation results in the release of how many molecules of water?
From the following identify the group that is exclusively consists of polysaccharides.
Fructose is the fruit sugar and chemically it is ketohexose but it has a ______ rather than a ______.
Which among the following compounds is obtained when glucose reacts with hydrogen cyanide?
Which is the product obtained, when Br2 water reacts with glucose?
Match the columns and select the correct option.
| Column I | Column II | ||
| i. | Starch | a. | Animal storage molecule |
| ii. | Cellulose | b. | Plant storage molecule |
| iii. | Glycogen | c. | Heparin |
| iv. | Heteropolysaccharide | d. | Plant cell wall component |
Which reagent among the following is used to confirm presence of aldehydic carbonyl group in glucose?
Which carbon atoms of α- D glucopyranose and β-D-fructofuranose respectively are linked together to form glycosidic linkage in sucrose?
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 an oligosaccharide?
The general formula for polysaccharide is ____________.
\[\ce{CH3 - CH2 - CH2 - Br ->[Na][dry ether] A ->[Cl2] B}\]
Identify the product B in the above reaction.
Which one of the following is generally applicable to polysaccharides?
Which one of the following is NOT soluble in water?
Which among the following statements is true for amylose?
Which one of the following sugar does NOT have same empirical fonnula as that of carbohydrate?
Which among the following reagents is used to confirm the presence of carbonyl group in glucose?
Which of the following statement is NOT true about saccharic acid?
Which among the following is a product of hydrolysis of one mole raffinose?
Which among the following observations suggests that glucose also exists in cyclic form?
Which one of the following rotates the plane polarized light towards left?
Which one given below is a non-reducing sugar?
\[\ce{Glucose ->[(HCN)] Product ->[(hydrolysis)] Product ->[(HI + Heat)] A}\], the compound A is:
The number of sp2 and sp3 hybridised carbon in fructose are respectively ____________.
Complete hydrolysis of cellulose gives ____________.
What are reducing and non-reducing sugars?
Is the following sugar, D-sugar or L-sugar?
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?
Identify the monosaccharide containing only one asymmetric carbon atom in its molecule.
Carbohydrates that do not undergo hydrolysis further are called ______.
Write the ring structure of glucose.
Write the Zwitter ion structure of alanine.
Why carbohydrates are generally optically active.
Why carbohydrates are generally optically active?
Why carbohydrates are generally optically active.
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.
