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प्रश्न
How is glucose prepared from starch?
Write the preparation of glucose from starch.
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उत्तर
Commercially, glucose is obtained on a large scale by hydrolysis of starch, which is heated to 393 K under pressure with dilute sulphuric acid.
\[\ce{\underset{Starch}{(C6H10O5)_n}+ nH2O ->[dil H2SO4][393 K, 2-3 atm] \underset{Glucose}{nC6H12O6}}\]
Excess sulphuric acid is neutralized by adding chalk powder. Activated charcoal is used to remove coloured impurities. The solution is cooled, resulting in the separation of glucose crystals, which are filtered and removed.
संबंधित प्रश्न
What is the action of following reagents on glucose?
bromine water
What is the action of following reagents on glucose?
dilute HNO3
What is the action of following reagents on glucose?
hydroxyl amine
Stachyose is an example of _______.
(A) monosaccharides
(B) disaccharides
(C) trisaccharides
(D) tetrasaccharides
Write the formula of the complex copper (II) hexacyanoferrate (II).
How is glucose prepared by commercial method? How is peptide linkage formed?
Hydrolysis of starch yields ____________.
Which among the following is the simplest sugar?
Sucrose (cane sugar) is a disaccharide. One molecule of sucrose on hydrolysis gives ______.
How do you explain the presence of all the six carbon atoms in glucose in a straight chain?
In nucleoside a base is attached at 1′ position of sugar moiety. Nucleotide is formed by linking of phosphoric acid unit to the sugar unit of nucleoside. At which position of sugar unit is the phosphoric acid linked in a nucleoside to give a nucleotide?
Under what conditions glucose is converted to gluconic and saccharic acid?
How do you explain the presence of five – OH groups in glucose molecule?
In the acetylation of glucose, which group is involved in the reaction
Which of the following is an example of aldo hexose?
A nucleoside is made of:-
A nucleoside acids, the sequence is
When sucrose is heated with cone. HNO3 the product is ______.
Which of the following statements is not true about glucose?
How is glucose prepared on commercial scale?
