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प्रश्न
What is the action of the following reagents on glucose?
hydrogen iodide
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उत्तर
Glucose gives n-hexane on prolonged heating with hydrogen iodide, HI.
\[\ce{\underset{\text{Glucose}}{CHO(CHOH)4CH2OH} ->[\Delta,HI] \underset{\text{n-Hexane}}{CH3-(CH2)4-CH3}}\]
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संबंधित प्रश्न
Give scientific reasons:
Hydrolysis of sucrose is called inversion.
Draw a neat diagram for the following:
Haworth formula of glucopyranose.
Glucose on oxidation with dilute nitric acid gives _______________
Write the name of the polysaccharide used for the commercial preparation of glucose.
Draw the structure of α-D glucopyranose.
What is the action of the following reagents on glucose?
acetic anhydride
Draw the Haworth projection structure of the following.
α-D-(–)-Fructofuranose
Explain D and L configuration in sugars.
Write a chemical reaction to convert glucose into glucose cyanohydrin.
From the following identify an example of disaccharides.
______ is the prosthetic group of glycoproteins.
Identify the sugar having the molecular formula C6H1206.
From the following identify the two types of glucose polymers present in starch.
Identify the CORRECT combination.
Which reagent among the following is used to confirm presence of aldehydic carbonyl group in glucose?
Which carbon atoms of α- D glucopyranose and β-D-fructofuranose respectively are linked together to form glycosidic linkage in sucrose?
All these carbohydrates contain \[\ce{1 -> 4β}\] glycosidic linkage, EXCEPT ____________.
Which one of the following is an oligosaccharide?
Which one of the following is a carbohydrate but does NOT follow the general formula of carbohydrate?
Which one of the following is Tetrose sugar?
Which following reagent is used to detect presence of five hydroxyl groups in a glucose molecule?
Which one of the following sugar does NOT have same empirical fonnula as that of carbohydrate?
Which among the following reagents is used to confirm the presence of carbonyl group in glucose?
Identify the number of oxygen atoms present in saccharic acid?
Identify the product Y in the following reaction.
\[\ce{Maltose ->[Hydrolysis] X ->[dil. HNO3][(excess)] Y}\]
Which one of the following rotates the plane polarized light towards left?
The correct corresponding order of names of four aldoses with configuration given below Respectively is:
Which one given below is a non-reducing sugar?
\[\ce{Glucose ->[(HCN)] Product ->[(hydrolysis)] Product ->[(HI + Heat)] A}\], the compound A is:
Assertion: A solution of sucrose in water is dextrorotatory. But on hydrolysis in the presence of little hydrochloric acid, it becomes levorotatory.
Reason: Sucrose hydrolysis gives equal amounts of glucose and fructose. As a result of this change in sign of rotation is observed.
Is the following sugar, D-sugar or L-sugar?

Glucose on oxidation with bromine water yields gluconic acid. This reaction confirms the presence of ______.
Which carbon atoms of fructose are bonded together through oxygen forming fructofuranose?
Which one is a non-reducing commercial sugar?
The glycosidic linkage present in maltose is ______.
\[\ce{CH2OH - CO - (CHOH)4 - CH2OH}\] is an example of ______.
Why carbohydrates are generally optically active.
Why carbohydrates are generally optically active.
Why carbohydrates are generally optically active?
Describe the action of the following reagent on glucose:
Bromine water
Describe the action of the following reagent on glucose:
dil. Nitric acid.
Carbohydrates that do not undergo hydrolysis further are called ______.
Why carbohydrates are generally optically active.
Why are carbohydrates generally optically active?
\[\ce{CH2OH - CO - (CHOH)4 - CH2OH}\] is an example of ______.
Why carbohydrates are generally optically active.
What are the number of chiral carbon atoms and the number of formyl groups, respectively, present in ribose?
The sugar found in milk is ______.
