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Glucose is prepared commercially from the hydrolysis of compound A by boiling it with dilute \mathrm{\mathrm{H}_2 \mathrm{SO}_4} at \mathrm{393 \mathrm{~K}}under pressure. \mathrm{\mathrm{A}}  is:

Option: 1

Starch

 


Option: 2

Sucrose

 


Option: 3

Galactose

 


Option: 4

Dextrose


Answers (1)

best_answer

An aqueous solution of corn starch is acidified with dilute \mathrm{\mathrm{H}_2 \mathrm{SO}_4.} This is then heated under pressure (2-3 bar) for hydrolysis to take place. After this, the liquid is neutralised with sodium carbonate and the resulting solution is concentrated under reduced pressure to get glucose crystals. This process is also used for obtaining glucose from cellulose.

Posted by

Devendra Khairwa

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