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प्रश्न
Define carbohydrates.
उत्तर १
Carbohydrates are optically active polyhydroxy aldehydes or polyhydroxy ketones or the compounds which can be hydrolysed to polyhydroxy aldehydes or polyhydroxy ketones.
उत्तर २
Any of a large group of organic compounds occurring in foods and living tissues and including sugars, starch, and cellulose. They contain hydrogen and oxygen in the same ratio as water (2:1) and typically can be broken down to release energy in the animal body. Carbohydrates are polyhydroxy aldehydes or ketones or compounds which give rise to such units on hydrolysis.
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संबंधित प्रश्न
Write a commercial method for preparation of glucose.
Which of the following type of carbohydrates cannot be hydrolyzed?
Which enzymes would work sequentially on potatoes consumed by an individual?
From the following identify the group that is exclusively consists of polysaccharides.
From the following identify the materials that are made up of cellulose.
i. Plant cell wall
ii. Exoskeleton of arthropods
iii. Paper from plant pulp
iv. Cotton fibre
Which among the following compounds is obtained when glucose reacts with hydrogen cyanide?
Identify a non-reducing carbohydrate from the following.
From the following identify the two types of glucose polymers present in starch.
Raffinose, sucrose and stachyose are respectively ____________.
Identify the INCORRECT statement regarding glucose.
One mole of a carbohydrate on hydrolysis gives one mole of glucose and one mole of galactose. Identify the carbohydrate.
Which one of the following is an oligosaccharide?
Stachyose is ____________.
Which one of the following carbohydrates is insoluble in water?
Which of the following molecules reduces Fehling's solution?
How many moles of fructose and galactose respectively are obtained on hydrolysis of 1 mole stachyose?
When 2 moles of stachyose is hydrolyzed, the number of moles of galactose obtained is ____________.
Which of the following statement is NOT true about saccharic acid?
Which among the following is a product of hydrolysis of one mole raffinose?
How many optical isomers are possible for a compound having four asymmetric carbon atoms?
Which one given below is a non-reducing sugar?
α-D (+) Glucose and β-D (+) glucose are ____________.
Classify the following into monosaccharides, oligosaccharides and polysaccharides.
Fructose
Classify the following into monosaccharides, oligosaccharides and polysaccharides.
Sucrose
Identify the monosaccharide containing only one asymmetric carbon atom in its molecule.
\[\ce{CH2OH-CO-(CHOH)4-CH2OH}\] is an example of ______.
Describe the action of the following reagent on glucose:
dil. Nitric acid.
Why carbohydrates are generally optically active?
\[\ce{CH2OH - CO - (CHOH)4 - CH2OH}\] is an example of ______.
