English

Write the reaction that indicates the presence of -CHO group in glucose - Chemistry

Advertisements
Advertisements

Question

Write the reaction that indicates the presence of -CHO group in glucose

Advertisements

Solution

The oxidation of glucose with bromine water (which is a mild oxidizing agent) forms gluconic acid. This indicates presence of aldehyde group.

shaalaa.com
  Is there an error in this question or solution?
2013-2014 (October)

APPEARS IN

RELATED QUESTIONS

How many moles of acetic anhydride will be required to form glucose pentaacetate from 2M of glucose?

(a) 2

(b) 5

(c) 10

(d) 2.5


Differentiable between the following: 
Amylose and Amylopectin 


What do you observe when glucose solution is heated with Tollen’s reagent?


Fill in the blanks by choosing the appropriate word/words from those given in the brackets:  

(iodoform, acetaldehyde, positive, greater, acidic, acetone, disaccharide, negative, increases, glucose, decreases, chloroform, polysaccharide, lactose, lesser, basic, cationic hydrolysis, anionic hydrolysis)

Sucrose is a _________ and yields upon hydrolysis, a mixture of ________ and fructose.


Write the reactions involved when D-glucose is treated with the following reagent:
H2N-OH


Write the reaction involved when D-glucose is treated with the following reagent:

(CH3CO)2O


The following compound can be called as:


Choose the appropriate answer(s) for the below representation from the options given


What is the most abundant organic compound on earth?


Oxime is formed by treating glucose with ____________.


Which of the following statements is incorrect regarding glucose?


Which one of the following compounds is different from the rest?


When glucose reacts with bromine water, the main product is ____________.


Glucose does not react with ____________.


Reduction of glucose by HI suggest that ____________.


Which of the following reactions of glucose can be explained only by its cyclic structure?


The α-D glucose and β-D glucose differ from each other due to difference in carbon atom with respect to its ____________.


The two forms of D-glucopyranose obtained from the solution of D-glucose are called ____________.


The letter D and L in carbohydrates represent ____________.


The number of chiral carbons in ß-D(+) glucose is ____________.


Which one of the following reactions is not explained by the open chain Structure of glucose?


Which of the following pairs represents anomers?


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)

Assertion: D (+) – Glucose is dextrorotatory in nature.

Reason: ‘D’ represents its dextrorotatory nature.


What happens when D-glucose is treated with the following reagent?

HI


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:


Give a reason for the following observations:

Penta-acetate of glucose does not react with hydroxylamine.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×