Subjective Type

Write such facts which cannot be explained by the open chain structure of glucose.

Solution

The following facts and reaction cannot be explained by open chain structure of glucose.
i. Despite having the alehyde group, glucose does not give $$ 2, 4 -DNP $$ test, schiff's test and it does not form and it does not form the hydrogen sulphite addition product with $$ NaHSO_3 $$
ii. The penta -acetate of glucose does not react with hydroxylamine indicating the absence of free aldehydic group.

SIMILAR QUESTIONS

Biomolecules

Which of the following compounds will behave as a reducing sugar in an aqueous $$KOH$$ solution?

Biomolecules

Glucose on reaction with $$Br_2$$ water gives :

Biomolecules

Glucose on oxidation with bromine water yields gluconic acid. This reaction confirms presence of :

Biomolecules

Which of the following statements is not true about glucose?

Biomolecules

$$Glucose \xrightarrow [ ]{ HCN } X\xrightarrow [ ]{ Hydrolysis } Y\xrightarrow [ Heat ]{ HI } Z$$ Identify $$Z$$.

Biomolecules

On oxidation with a mild oxidising agent like $${Br}_{2}/{H}_{2}O$$, the glucose is oxidised to?

Biomolecules

During acetylation of glucose it needs $$x$$ moles of acetic anhydride. The value of $$x$$ would be:

Biomolecules

A diabetic person carries a packet of glucose with him always, because ?

Biomolecules

Which of the following Carbohydrates is used silvering of mirors

Biomolecules

When glucose is reacted with bromine water, the major product is

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