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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
Give scientific reasons:
Hydrolysis of sucrose is called inversion.
Draw a neat diagram for the following:
Haworth formula of glucopyranose.
Glucose on oxidation with dilute nitric acid gives _______________
Draw the structure of α-D glucopyranose.
Write the name of the unit to which glucose unit is linked to from sucrose.
Explain the preparation of glucose from sucrose.
What is the action of the following reagents on glucose?
hydroxylamine
Explain D and L configuration in sugars.
Which of the following carbohydrate is sweet to taste?
Carbohydrates can contain which of the following chemical groups?
From the following identify the group that is exclusively consists of polysaccharides.
Identify the sugar having the molecular formula C6H1206.
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?
____________ do not give smaller sugar units on hydrolysis.
Which reagent among the following is used to confirm presence of aldehydic carbonyl group in glucose?
Which of the following monosaccharide is a ketohexose?
The general formula for polysaccharide is ____________.
Which one of the following is NOT soluble in water?
Which of the following molecules reduces Fehling's solution?
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?
Which among the following reagents is used to confirm the presence of carbonyl group in glucose?
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)
Identify the product Y in the following reaction.
\[\ce{Maltose ->[Hydrolysis] X ->[dil. HNO3][(excess)] Y}\]
How many moles of acetic acid are obtained in the reaction when one mole glucose is treated with excess acetic anhydride?
The correct corresponding order of names of four aldoses with configuration given below Respectively is:
Glucose is an aldose. Which one of the following reactions is not expected with glucose?
α-D (+) Glucose and β-D (+) glucose are ____________.
Why carbohydrates are generally optically active?
Write the structure of α-D (+) glucopyranose.
Which of the following groups contain polysaccharides?
The molecule of glucose is also called ______.
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?
Formation of gluconic acid from glucose by oxidation using Br2 water.
\[\ce{CH2OH-CO-(CHOH)4-CH2OH}\] is an example of ______.
Why carbohydrates are generally optically active.
Why carbohydrates are generally optically active.
Assign D/L configuration to the following monosaccharides:
Describe the action of the following reagent on glucose:
dil. Nitric acid.
Write the ring structure of glucose.
Write the Zwitter ion structure of alanine.
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.
What are the number of chiral carbon atoms and the number of formyl groups, respectively, present in ribose?
The sugar found in milk is ______.
