English
Karnataka Board PUCPUC Science 2nd PUC Class 12

What Are the Expected Products of Hydrolysis of Lactose? - Chemistry

Advertisements
Advertisements

Question

What are the expected products of hydrolysis of lactose?

Solution

Lactose is composed of β-D galactose and β-D glucose. Thus, on hydrolysis, it gives β-D galactose and β-D glucose

 

shaalaa.com
  Is there an error in this question or solution?
Chapter 14: Biomolecules - Intext Questions [Page 412]

APPEARS IN

NCERT Chemistry [English] Class 12
Chapter 14 Biomolecules
Intext Questions | Q 2 | Page 412

RELATED QUESTIONS

Glucose or sucrose are soluble in water but cyclohexane or benzene (simple six membered ring compounds) are insoluble in water. Explain.


Write two main functions of carbohydrates in plants.


What are reducing sugars?


What are the hydrolysis products of sucrose 


The following molecule is called as:

\[\begin{array}{cc}
\ce{CHO}\phantom{..}\\
|\phantom{......}\\
\ce{(CHOH)4}\\
|\phantom{......}\\
\ce{CH2OH}
\end{array}\]


Which of the following gives a positive Fehling solution test?


The two functional groups present in a typical carbohydrate are:


Monosaccharides usually contains ____________ carbon atoms.


The pair of compounds in which both the compounds give the positive test with Tollen’s reagent is:


Structure of a disaccharide formed by glucose and fructose is given below. Identify anomeric carbon atoms in monosaccharide units.


Which of the following monosaccharides are present as five membered cyclic structure (furanose structure)?

(i) Ribose

(ii) Glucose

(iii) Fructose

(iv) Galactose


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?


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)

  1. Peptide linkage
  2. Denaturation

OR

(c) Define the following as related to carbohydrates: (2)

  1. Anomers
  2. Glycosidic linkage

Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×