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CUET UG Amines and Biomolecules — practice questions — page 6

Explore 168 free Amines and Biomolecules questions in CUET UG Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Amines and Biomolecules questions and exercises with answers

Showing questions 151–168 of 168.

Glucose pentaacetate shows that glucose carries how many hydroxyls?Read the answer and worked solution →The water soluble component of starch is:Read the answer and worked solution →All proteins are polymers of which kind of amino acid?Read the answer and worked solution →The five membered ring form of fructose is called the:Read the answer and worked solution →Glucose oxidised by bromine water yields:Read the answer and worked solution →Nucleotides in a chain are joined by which linkage?Read the answer and worked solution →Hoffmann bromamide degradation treats an amide with bromine and:Read the answer and worked solution →Gabriel phthalimide synthesis is used to prepare only:Read the answer and worked solution →Aniline fails to undergo the Friedel-Crafts reaction because it:Read the answer and worked solution →Aromatic primary amines cannot be made by Gabriel synthesis because:Read the answer and worked solution →Introducing halogen using copper powder and a halogen acid is the:Read the answer and worked solution →A carbohydrate that cannot be hydrolysed further is a:Read the answer and worked solution →A monosaccharide holding an aldehyde group is called an:Read the answer and worked solution →The six membered ring form of glucose is called the:Read the answer and worked solution →Fructose is best described as a:Read the answer and worked solution →Commercial glucose is obtained by hydrolysing starch at:Read the answer and worked solution →Amylopectin makes up roughly what share of starch?Read the answer and worked solution →Carbohydrates are defined as optically active polyhydroxy:Read the answer and worked solution →

Worked practice questions

Glucose pentaacetate shows that glucose carries how many hydroxyls?

  1. Five
  2. Nine
  3. Four
  4. Seven
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Correct answer: A. Five

1. Acetic anhydride acetylates every free hydroxyl. 2. The product carries five acetyl groups. 3. So glucose has five hydroxyl groups. _Source: syllabus Chemistry Part 2, Unit 10 'Biomolecules'_

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The water soluble component of starch is:

  1. Amylase
  2. Amylene
  3. Amyloid
  4. Amylose
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Correct answer: D. Amylose

1. Starch has two components in it. 2. One is a long unbranched chain, about a fifth of the whole. 3. That soluble part is amylose. _Source: syllabus Chemistry Part 2, Unit 10 'Biomolecules'_

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All proteins are polymers of which kind of amino acid?

  1. Gamma amino acids
  2. Delta amino acids
  3. Sigma amino acids
  4. Alpha amino acids
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Correct answer: D. Alpha amino acids

1. Amino acids differ in where the amino group sits. 2. Only one class comes out of protein hydrolysis. 3. Proteins are polymers of alpha amino acids. _Source: syllabus Chemistry Part 2, Unit 10 'Biomolecules'_

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