English

Write a commercial method for preparation of glucose.

Advertisements
Advertisements

Questions

Write a commercial method for preparation of glucose.

How is glucose prepared on a commercial scale?

Short/Brief Note
Advertisements

Solution

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.

\[\ce{\underset{\text{Starch}}{(C6H10O5)}_{{n}} + {n}H2O ->[H+][393K, 2-3 atm] \underset{\text{Glucose}}{{n}C6H12O6}}\]

shaalaa.com
  Is there an error in this question or solution?
Chapter 14: Biomolecules - Short Answer Questions (Type-II)

APPEARS IN

SCERT Maharashtra Chemistry [English] 12 Standard HSC
Chapter 14 Biomolecules
Short Answer Questions (Type-II) | Q 6.2
SCERT Maharashtra Chemistry [English] 12 Standard HSC
Chapter 14 Biomolecules
Long Answer Questions | Q 2.2

RELATED QUESTIONS

Give scientific reasons:

Hydrolysis of sucrose is called inversion.


Give two evidences for presence of formyl group in glucose.


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


Explain the preparation of glucose from sucrose.


Write chemical reaction for following conversions

glucose into gluconic acid


Define carbohydrates.


Draw the structure of the pyran.


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


Which of the following type of carbohydrates cannot be hydrolyzed?


Identify the bond that links the carbon of two adjacent monosaccharides.


Identify the given structure 'P' and 'Q'.


From the following identify an example of disaccharides.


Which of the following monosaccharides is a tetrose sugar?


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 which is a heteropolysaccharide?


______ is the prosthetic group of glycoproteins.


Identify a non-reducing carbohydrate from the following.


Which is the product obtained, when Br2 water reacts with glucose?


Match the Column I and Column II select the correct option.

  Column I   Column II
i. Monosaccharides a. Stored energy in animals
ii. Glycogen b. Polymer made from ß-glucose molecules
iii. Cellulose c. Exoskeleton of arthropods
iv. Chitin d. Building blocks of carbohydrates
    e. Plant hormone

Chitin is a/an ______.


Monosaccharides are ______ in nature.


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.


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?


Which one of the following sugar does NOT have same empirical fonnula as that of carbohydrate?


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?


Which one of the following rotates the plane polarized light towards left?


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


Assertion: A solution of sucrose in water is dextrorotatory. But on hydrolysis in the presence of little hydrochloric acid, it becomes levorotatory.

Reason: Sucrose hydrolysis gives equal amounts of glucose and fructose. As a result of this change in sign of rotation is observed.


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


Classify the following into monosaccharides, oligosaccharides and polysaccharides.

Fructose


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


Is the following sugar, D-sugar or L-sugar?


The molecule of glucose is also called ______.


A molecule of stachyose contains how many carbon atoms?


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 ______.


Which one is a non-reducing commercial sugar?


Consider the following reaction

\[\ce{A <-[Br2 - H2O] Glucose ->[HNO3] B}\]

Here, 'A' and 'B' are respectively.


Why carbohydrates are generally optically active.


Describe the action of the following reagent on glucose:

Bromine water


Carbohydrates that do not undergo hydrolysis further are called ______.


Why carbohydrates are generally optically active.


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


Why are carbohydrates generally optically active?


Write the Zwitter ion structure of alanine.


Why carbohydrates are generally optically active.


Why carbohydrates are generally optically active.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×