Write the chemical reaction to elucidate- Glucose contains five -OH groups.

The reaction of glucose that can be explained only by its cyclic structure is the formation of pentaacetate. The following reaction will take place when acetylation of glucose with acetic anhydride to form glucose pentaacetate which confirms the presence of five - OH groups.

Write the chemical reaction to elucidate- Glucose contains six carbon atoms in a straight chain.

A polymer chain of hexane is formed after prolonged heating with hydrogen iodide. Therefore, the chemical reaction to elucidate that glucose contains six carbon atoms in a straight chain will occur when glucose reacts with hydroiodic acid and red phosphorus at 100 ∘ C to give n-hexane.

HARD

Earn 100

Which reagents are used in conversion of aldohexose to ketohexose?

Important Questions on Biomolecules

HARD

Chemistry>Organic Chemistry>Biomolecules>Carbohydrates

What are monosaccharides? Explain denaturation of proteins.

EASY

Chemistry>Organic Chemistry>Biomolecules>Carbohydrates

What is the carbohydrate containing

- CHO

group known as?

HARD

Chemistry>Organic Chemistry>Biomolecules>Carbohydrates

Define optical activity. How many optical isomers are possible for glucose.

HARD

Chemistry>Organic Chemistry>Biomolecules>Carbohydrates

What do you know about monosaccharides, disaccharides and polysaccharides? Explain with examples. How can glucose and starch be differentiated?

HARD

Chemistry>Organic Chemistry>Biomolecules>Carbohydrates

When each of the aldopentoses are stepped up by one carbon atom by Kiliani reaction followed by oxidation with

{HNO}_{3}

, optically active or inactive dicarboxylic acids are produced. Which of the following is TRUE?

EASY

Chemistry>Organic Chemistry>Biomolecules>Carbohydrates

Write the chemical reaction to elucidate-

Glucose contains five -OH groups.

MEDIUM

Chemistry>Organic Chemistry>Biomolecules>Carbohydrates

What is the action of conc.

HI

with glucose ?

MEDIUM

Chemistry>Organic Chemistry>Biomolecules>Carbohydrates

For 'invert sugar', the correct statement(s) is (are)

(Given: specific rotations of

(+) -

sucrose,

(+) -

maltose,

L - (-) -

glucose and

L - (+) -

fructose in aqueous solution are

+ 66^{°}, + 140^{°}, - 52^{°}

and

+ 92^{°}

, respectively)

EASY

Chemistry>Organic Chemistry>Biomolecules>Carbohydrates

Write the product when

D -

glucose reacts with conc.

{HNO}_{3}

MEDIUM

Chemistry>Organic Chemistry>Biomolecules>Carbohydrates

Write chemical reactions to show that open structure of D-glucose contains the following :
Five alcohol groups

MEDIUM

Chemistry>Organic Chemistry>Biomolecules>Carbohydrates

Give an example of aldohexose.

EASY

Chemistry>Organic Chemistry>Biomolecules>Carbohydrates

Which of the following is an example of ketohexose ?

HARD

Chemistry>Organic Chemistry>Biomolecules>Carbohydrates

Give definition of monosaccharide and disaccharide and give one example for each. Give one reaction for each group to detect the presence of $- CHO$ and $> C = O$ groups. Differentiate between glucose and fructose.

EASY

Chemistry>Organic Chemistry>Biomolecules>Carbohydrates

Write the chemical reaction to elucidate-