Advertisements
Advertisements
प्रश्न
What is the action of the following reagents on glucose?
hydrogen iodide
Advertisements
उत्तर
Glucose gives n-hexane on prolonged heating with hydrogen iodide, HI.
\[\ce{\underset{\text{Glucose}}{CHO(CHOH)4CH2OH} ->[\Delta,HI] \underset{\text{n-Hexane}}{CH3-(CH2)4-CH3}}\]
APPEARS IN
संबंधित प्रश्न
Give scientific reasons:
The disaccharide sucrose gives negative Tollens test while the disaccharide maltose gives a positive Tollens test.
The glycosidic linkage in maltose is formed between _______________
Write the name of the unit to which glucose unit is linked to from sucrose.
Classify the following carbohydrates into monosaccharide, disaccharide, oligosaccharide and polysaccharide:
glucose, cellulose, maltose, stachyose
Draw the Haworth projection structure of the following.
α-D-(–)-Fructofuranose
Write a commercial method for preparation of glucose.
Which of the following type of carbohydrates cannot be hydrolyzed?
From the following identify an example of disaccharides.
From the following which is a heteropolysaccharide?
The reserve food material in animals is ____________.
Chitin is a/an ______.
Monosaccharides are ______ in nature.
From the following identify the two types of glucose polymers present in starch.
Identify the CORRECT combination.
Match the columns and select the correct option.
| Column I | Column II | ||
| i. | Starch | a. | Animal storage molecule |
| ii. | Cellulose | b. | Plant storage molecule |
| iii. | Glycogen | c. | Heparin |
| iv. | Heteropolysaccharide | d. | Plant cell wall component |
Which among the following type of linkages is present in cellulose?
Raffinose, sucrose and stachyose are respectively ____________.
Which of the following monosaccharide is a ketohexose?
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 generally applicable to polysaccharides?
Which of the following statements is NOT true for glyceraldehyde?
Glucose and gluconic acid treated with dilute nitric acid forms saccharic acid. What does this indicate?
Which among the following statements is true for amylose?
What is the number of hydroxyl groups present in lactic acid?
Identify the number of secondary carbon atoms in glucose.
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?
On hydrolysis sucrose gives ____________.
What is the quantity of glucose obtained when 68.4 g of sucrose is hydrolyzed in laboratory under ideal condition?
(Molar mass of sucrose = 342 g mol−1)
Identify the number of oxygen atoms present in saccharic acid?
\[\ce{Glucose ->[(HCN)] Product ->[(hydrolysis)] Product ->[(HI + Heat)] A}\], the compound A is:
Glucose is an aldose. Which one of the following reactions is not expected with glucose?
Classify the following into monosaccharides, oligosaccharides and polysaccharides.
Fructose
Write the structure of α-D (+) glucopyranose.
If 'n' represents total number of asymmetric carbon atoms in a compound, then the possible· number of optical isomers of the compound is ______.
Lactose is made of ______.
Match the Column I with Column II and choose the correct answer from options below:
| Column I | Column II |
| A. Purine | 1. Glycogen |
| B. Pyrimidine | 2. Cellulose |
| C. Structural polysaccharide | 3. Glucagon |
| D. Storage polysaccharide | 4. Adenine |
| 5. Cytosine |
Identify the product obtained in the following conversion.
\[\ce{Glucose ->[(O)][Br2 water] Product}\]
\[\ce{CH2OH - CO - (CHOH)4 - CH2OH}\] is an example of ______.
Why carbohydrates are generally optically active.
Why carbohydrates are generally optically active?
Carbohydrates that do not undergo hydrolysis further are called ______.
Write the ring structure of glucose.
Why carbohydrates are generally optically active?
Why carbohydrates are 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?
Which of the following is used to separate glucose and fructose from hydrolysate of sucrose?
