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प्रश्न
What are the hydrolysis products of sucrose?
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उत्तर
Sucrose on hydrolysis gives one unit of glucose and one unit of fructose.
\[\ce{\underset{Sucrose}{C12H22O11} + H2O ->[Invertase][or H3O+] \underset{Glucose}{C6H12O6} + \underset{Fructose}{C6H12O6}}\]
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संबंधित प्रश्न
What are the expected products of hydrolysis of lactose?
Write two main functions of carbohydrates in plants.
The number of primary and secondary hydroxyl groups in ribose are -
(a) 1, 3
(b) 2, 3
(c) 3, 1
(d) 3, 2
Glycosidic linkage is found between ____________.
Which of the following gives a positive Fehling solution test?
Glucose gives silver mirror test with Tollen’s reagent. It shows the presence of ____________.
The two functional groups present in a typical carbohydrate are:
Which of the following monosaccharide is pentose?
Monosaccharides usually contains ____________ carbon atoms.
Reducing sugars reduce ____________.
Which of the following reagent cannot distinguish between glucose and fructose?
Name the linkage connecting monosaccharide units in polysaccharides.
What are glycosidic linkages? In which type of biomolecules are they present?
Which monosaccharide units are present in starch, cellulose and glucose and which linkages link these units?
Assertion: Deoxyribose, \[\ce{C5H10O4}\] is not a carbohydrate.
Reason: Carbohydrates are hydrates of carbon so compounds which follow \[\ce{C_x(H2O)_y}\] formula are carbohydrates.
The following questions are case-based questions. Read the passage carefully and answer the questions that follow:
| Carbohydrates are optically active polyhydroxy aldehydes and ketones. They are also called saccharides. All those carbohydrates which reduce Fehling's solution and Tollen's reagent are referred to as reducing sugars. Glucose, the most important source of energy for mammals, is obtained by the hydrolysis of starch. Vitamins are accessory food factors required in the diet. Proteins are the polymers of α-amino acids and perform various structural and dynamic functions in the organisms. Deficiency of vitamins leads to many diseases. |
Answer the following:
(a) The penta-acetate of glucose does not react with Hydroxylamine. What does it indicate? (1)
(b) Why cannot vitamin C be stored in our body? (1)
(c) Define the following as related to proteins: (2)
- Peptide linkage
- Denaturation
OR
(c) Define the following as related to carbohydrates: (2)
- Anomers
- Glycosidic linkage
