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प्रश्न
Account for the following:
What happens when D – glucose is treated with the following reagents
Bromine water
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उत्तर
\[\begin{array}{cc}
\phantom{.}\ce{CHO}\phantom{..............}\ce{COOH}\phantom{..}\\
\phantom{.}|\phantom{..................}|\phantom{.......}\\
\phantom{}\ce{(CHOH)4 ->[Br2 water] (CHOH)4}\\
\phantom{.}|\phantom{..................}|\phantom{.......}\\
\phantom{...}\ce{CH2OH}\phantom{..........}\ce{\underset{Gluconic acid}{CH2OH}}\phantom{..}
\end{array}\]
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संबंधित प्रश्न
Draw the simple Fisher projection formulae of D - (+) - glucose and D - (-) - fructose
Glucose on reaction with HI gives n-hexane. What does it suggest about the structure of glucose?
Write the reaction involved when D-glucose is treated with the following reagent:
(CH3CO)2O
Which of the following properties of glucose cannot be explained by its open chain structure?
(i) Glucose does not form hydrogen sulphite with NaHSO3.
(ii) On oxidation with HNO3 glucose gives saccharic acid.
(iii) Glucose is found to exist in two different crystalline forms which are named as α and β.
Glucose is found to exist in two different α and β crystalline forms. These forms can be obtained by:
(i) The α form of glucose is obtained by crystallisation from a concentrated solution of glucose at 303 K.
(ii) The β form of glucose is obtained by crystallisation from a concentrated solution of glucose at 303 K.
(iii) The β form is obtained by crystallisation from hot and saturated aqueous solution at 371 K.
(iv) The α form is obtained by crystallisation from hot and saturated aqueous solution at 371 K.
Which of the following reactions of glucose can be explained only by its cyclic structure?
Which one of the following reactions is not explained by the open chain Structure of glucose?
Three structures are given below in which two glucose units are linked. Which of these linkages between glucose units are between C1 and C4 and which linkages are between C1 and C6?
| (I) |  |
| (II) |  |
| (III) |  |
Why does compound (A) given below not form an oxime?
(A)
Match List - I with List - II.
| List I | List II | ||
| (A) | Glucose + HI | (I) | Gluconic acid |
| (B) | Glucose + Br2 water | (II) | Glucose pentacetate |
| (C) | Glucose + acetic anhydride | (III) | Saccharic acid |
| (D) | Glucose + HNO3 | (IV) | Hexane |
Choose the correct answer from the options given below:
