Advertisements
Advertisements
Question
\[\ce{CH2OH-CO-(CHOH)4-CH2OH}\] is an example of ______.
Options
Aldohexose
Aldoheptose
Ketotetrose
Ketoheptose
Advertisements
Solution
\[\ce{CH2OH-CO-(CHOH)4-CH2OH}\] is an example of ketoheptose.
Explanation:
Ketoheptose → \[\begin{array}{cc}
\phantom{....}\ce{CH2 - OH}\\
|\phantom{.....}\\
\phantom{}\ce{C = O}\\
|\phantom{.....}\\
\phantom{..}\ce{(CHOH)4}\\
|\phantom{.....}\\
\phantom{...}\ce{CH2OH}
\end{array}\]
Aldohexose Glucose → \[\begin{array}{cc}
\phantom{}\ce{CHO}\\
|\phantom{....}\\
\phantom{...}\ce{(CHOH)4}\\
|\phantom{....}\\
\phantom{...}\ce{CH2OH}
\end{array}\]
Ketoheptose → Ketone group and 7 carbon present
Ketotetrose → Ketone group and 4 carbon present
RELATED QUESTIONS
Give scientific reasons:
The disaccharide sucrose gives negative Tollens test while the disaccharide maltose gives a positive Tollens test.
Give scientific reasons:
Hydrolysis of sucrose is called inversion.
Give two evidences for presence of formyl group in glucose.
The glycosidic linkage in maltose is formed between _______________
Write chemical reaction for following conversions
glucose into glucoxime
Classify the following carbohydrates into monosaccharide, disaccharide, oligosaccharide and polysaccharide:
glucose, cellulose, maltose, stachyose
Explain the classification of carbohydrates with examples.
What is the action of the following reagents on glucose?
acetic anhydride
Explain D and L configuration in sugars.
Formation of lactose by conden ation results in the release of how many molecules of water?
Carbohydrates can contain which of the following chemical groups?
From the following identify the group that is exclusively consists of polysaccharides.
______ is the prosthetic group of glycoproteins.
The reserve food material in animals is ____________.
Fructose is the fruit sugar and chemically it is ketohexose but it has a ______ rather than a ______.
By which of the following feature we can identify the relatively small DNA molecules of plasmids?
Which among the following type of linkages is present in cellulose?
Raffinose, sucrose and stachyose are respectively ____________.
4-O-(α-D-Glucopyranosyl)-D-glucopyranose is ____________.
Which one of the following is generally applicable to polysaccharides?
Which one of the following is Tetrose sugar?
Which following reagent is used to detect presence of five hydroxyl groups in a glucose molecule?
What is the number of hydroxyl groups present in lactic acid?
Identify the number of secondary carbon atoms in glucose.
On hydrolysis sucrose gives ____________.
Which among the following sugars does not reduce Tollen's reagent?
Which among the following reagents is used for conversion of glucose to glucoxime?
What is the molecular formula of glyceraldehyde?
How many moles of acetic acid are obtained in the reaction when one mole glucose is treated with excess acetic anhydride?
Which among the following is a product of hydrolysis of one mole raffinose?
What is the product obtained when Br2 water reacts with glucose?
How many hydroxyl groups are present in Erythrulose?
How many optical isomers are possible for a compound having four asymmetric carbon atoms?
\[\ce{Glucose ->[(HCN)] Product ->[(hydrolysis)] Product ->[(HI + Heat)] A}\], the compound A is:
Complete hydrolysis of cellulose gives ____________.
Glucose is an aldose. Which one of the following reactions is not expected with glucose?
What are reducing and non-reducing sugars?
Classify the following into monosaccharides, oligosaccharides and polysaccharides.
Fructose
If 'n' represents total number of asymmetric carbon atoms in a compound, then the possible· number of optical isomers of the compound is ______.
A molecule of stachyose contains how many carbon atoms?
Which carbon atoms of fructose are bonded together through oxygen forming fructofuranose?
Formation of gluconic acid from glucose by oxidation using Br2 water.
Identify the product obtained in the following conversion.
\[\ce{Glucose ->[(O)][Br2 water] Product}\]
The glycosidic linkage present in maltose is ______.
\[\ce{CH2OH - CO - (CHOH)4 - CH2OH}\] is an example of ______.
Why carbohydrates are generally optically active.
Carbohydrates that do not undergo hydrolysis further are called ______.
Write Fischer projection formulae for glucose.
The linkage present in Lactose is ______.
\[\ce{CH2OH - CO - (CHOH)4 - CH2OH}\] is an example of ______.
Why carbohydrates are generally optically active.
Which of the following is used to separate glucose and fructose from hydrolysate of sucrose?
