Advertisements
Advertisements
प्रश्न
Give a reason for the following observations:
Penta-acetate of glucose does not react with hydroxylamine.
Advertisements
उत्तर
Penta-acetate of glucose does not react with hydroxylamine (−OHNH2) because there is no free −CHO group present.
APPEARS IN
संबंधित प्रश्न
Enumerate the reactions of D-glucose which cannot be explained by its open chain structure.
Write the product when D-glucose reacts with conc. HNO3.
Differentiable between the following:
Amylose and Amylopectin
Write the reaction involved when D-glucose is treated with the following reagent:
(CH3CO)2O
Glucose reacts with acetic anhydride to form ______.
Glucose is found to exist in two different α and β crystalline forms. These forms can be obtained by:
(i) The α form of glucose is obtained by crystallisation from a concentrated solution of glucose at 303 K.
(ii) The β form of glucose is obtained by crystallisation from a concentrated solution of glucose at 303 K.
(iii) The β form is obtained by crystallisation from hot and saturated aqueous solution at 371 K.
(iv) The α form is obtained by crystallisation from hot and saturated aqueous solution at 371 K.
The number of chiral carbons in ß-D(+) glucose is ____________.
Assertion: D (+) – Glucose is dextrorotatory in nature.
Reason: ‘D’ represents its dextrorotatory nature.
Account for the following:
What happens when D – glucose is treated with the following reagents
Bromine water
Glucose with excess of phenyl hydrazine forms ______.
