CBSE Class 12 Biomolecules Chapter 14 Chemistry Notes Quiz
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Questions and Answers

Which type of carbohydrates are sweet in taste, crystalline, and soluble in water?

  • Disaccharides
  • Monosaccharides (correct)
  • Non Sugars
  • Polysaccharides
  • Which carbohydrates respond to Tollens’ and Fehling solution test?

  • Polysaccharides only
  • Disaccharides only
  • Monosaccharides only (correct)
  • Oligosaccharides only
  • Which classification of carbohydrates includes starch, cellulose, and glycogen?

  • Monosaccharides
  • Non reducing sugars (correct)
  • Disaccharides
  • Reducing sugars
  • What is the molecular formula of glucose?

    <p>C6H12O6</p> Signup and view all the answers

    Which category do non-sugars belong to?

    <p>Tasteless carbohydrates</p> Signup and view all the answers

    Which category do reducing sugars fall into?

    <p>Monosaccharides only</p> Signup and view all the answers

    What is the term used for a pair of stereoisomeric ring forms of any sugar differing in configuration at the anomeric carbon?

    <p>Anomers</p> Signup and view all the answers

    What is the process for preparing glucose involving the hydrolysis of starch?

    <p>Reacting starch with dil H2SO4 at 393 K under pressure</p> Signup and view all the answers

    What term describes the change in the specific rotation of an optically active sugar when dissolved in water?

    <p>Mutarotation</p> Signup and view all the answers

    What is the name for the proposed cyclic structure of glucose by R.D. Haworth?

    <p>Pyranose structure</p> Signup and view all the answers

    What is the change in optical rotation that occurs during the hydrolysis of sucrose?

    <ul> <li>to - rotation change</li> </ul> Signup and view all the answers

    What is the primary cause of denaturation in proteins?

    <p>Changes in secondary and tertiary structure</p> Signup and view all the answers

    Study Notes

    Characteristics of Carbohydrates

    • Monosaccharides are sweet in taste, crystalline, and soluble in water.

    Classification of Carbohydrates

    • Polysaccharides include starch, cellulose, and glycogen.

    Properties of Glucose

    • The molecular formula of glucose is C6H12O6.
    • Glucose responds to Tollens' and Fehling solution test.

    Types of Carbohydrates

    • Non-sugars belong to the category of polysaccharides.
    • Reducing sugars fall into the category of monosaccharides.

    Stereoisomers of Sugars

    • A pair of stereoisomeric ring forms of any sugar differing in configuration at the anomeric carbon is called anomers.

    Preparation of Glucose

    • Glucose can be prepared through the hydrolysis of starch.

    Optical Rotation of Sugars

    • The change in the specific rotation of an optically active sugar when dissolved in water is called mutarotation.
    • The proposed cyclic structure of glucose by R.D.Haworth is called the Haworth projection.

    Hydrolysis of Sucrose

    • The change in optical rotation that occurs during the hydrolysis of sucrose is called invert sugar formation.

    Denaturation of Proteins

    • The primary cause of denaturation in proteins is the disruption of hydrogen bonds.

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    Description

    Test your knowledge of Biomolecules with CBSE NCERT Solutions for Class 12 Chemistry Chapter 14 Notes. Learn about carbohydrates, sugars, glycogen, cellulose, and starch through this quiz designed for students preparing for the CBSE board exams.

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