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.

MEDIUM

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When glucose reacts with bromine water, oxidation occurs and gluconic acid is produced. This shows that carbonyl group present in glucose is .

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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 ?

EASY

Chemistry>Organic Chemistry>Biomolecules>Carbohydrates

What is the advantage of storing glucose as glycogen in animals instead of as monomeric glucose?

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-

Glucose contains six carbon atoms in a straight chain.

MEDIUM

Chemistry>Organic Chemistry>Biomolecules>Carbohydrates

L

-isomer of a compound

{}^{'}A^{'} (C_{4} H_{8} O_{4})

gives a positive test with

{[Ag {({NH}_{3})}_{2}]}^{+}

. Treatment of '

A

' with acetic anhydride yields triacetate derivative. Compound '

A

' produces an optically active compound

(B)

and an optically inactive compound

(C)

on treatment with bromine water and

{HNO}_{3}

respectively. Compound

(A)

is :

MEDIUM

Chemistry>Organic Chemistry>Biomolecules>Carbohydrates

Choose the correct statements from the following:
A) In a polysaccharide chain, the right end is reducing end and the left end is non-reducing end.
B) In a protein, the right end is a first amino acid called N-end, and the left end is called C-terminal.
C) Concanavalin A is a drug used to cure cancer along with vinblastin and curcumin.
D) GLUT-