Advertisements
Advertisements
प्रश्न
Write a commercial method for preparation of glucose.
How is glucose prepared on a commercial scale?
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.
\[\ce{\underset{\text{Starch}}{(C6H10O5)}_{{n}} + {n}H2O ->[H+][393K, 2-3 atm] \underset{\text{Glucose}}{{n}C6H12O6}}\]
APPEARS IN
संबंधित प्रश्न
Give two evidences for presence of formyl group in glucose.
Write the name of the polysaccharide used for the commercial preparation of glucose.
Draw the structure of α-D glucopyranose.
Carbohydrates can contain which of the following chemical groups?
The reserve food material in animals is ____________.
By which of the following feature we can identify the relatively small DNA molecules of plasmids?
Identify a non-reducing carbohydrate from the following.
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?
One mole of a carbohydrate on hydrolysis gives one mole of glucose and one mole of galactose. Identify the carbohydrate.
Stachyose is ____________.
Which one of the following is a carbohydrate but does NOT follow the general formula of carbohydrate?
Which one of the following carbohydrates is insoluble in water?
What is the product obtained when Br2 water reacts with glucose?
Which one of the following rotates the plane polarized light towards left?
Complete hydrolysis of cellulose gives ____________.
Which of the following are epimers?
Write the structure of α-D (+) glucopyranose.
Is the following sugar, D-sugar or L-sugar?
Hydrolysis of sucrose is called ______.
The glycosidic linkage present in maltose is ______.
\[\ce{CH2OH - CO - (CHOH)4 - CH2OH}\] is an example of ______.
Carbohydrates that do not undergo hydrolysis further are called ______.
Explain the hydrolysis of sucrose.
CH2 OH - CO - (CHOH)4 - CH2 OH is an example of ______.
Why are carbohydrates generally optically active?
Why carbohydrates are generally optically active?
\[\ce{CH2OH - CO - (CHOH)4 - CH2OH}\] is an example of ______.
Why carbohydrates are generally optically active.
