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CUET UG Amines and Biomolecules — practice questions — page 4

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 91–120 of 168.

Water soluble vitamins must be eaten regularly because they are:Read the answer and worked solution →The coagulation of egg white on boiling is an example of:Read the answer and worked solution →The sequence of amino acids in a chain is its:Read the answer and worked solution →Two monosaccharides joined through an oxygen atom share a:Read the answer and worked solution →Sucrose is a non reducing sugar because both its:Read the answer and worked solution →The laevorotatory mixture left after hydrolysing sucrose is called:Read the answer and worked solution →Maltose on hydrolysis gives two units of:Read the answer and worked solution →Cellulose is a straight chain polymer built only from:Read the answer and worked solution →Carbohydrate is stored in the animal body as:Read the answer and worked solution →Lactose, the sugar of milk, is built from glucose and:Read the answer and worked solution →The word protein comes from a Greek word meaning:Read the answer and worked solution →The amine from Hoffmann degradation has how many carbons?Read the answer and worked solution →Lower aliphatic amines dissolve in water because they form:Read the answer and worked solution →Which class of amine has no intermolecular hydrogen bonding?Read the answer and worked solution →The order of boiling points of isomeric amines is:Read the answer and worked solution →The pKb value of ammonia is:Read the answer and worked solution →Aromatic amines are weaker bases than ammonia because the aryl group is:Read the answer and worked solution →Which reaction is used as a test for primary amines?Read the answer and worked solution →Hinsberg's reagent used to tell amines apart is:Read the answer and worked solution →Aniline with bromine water at room temperature gives:Read the answer and worked solution →The activating power of the amino group is curbed by:Read the answer and worked solution →Benzenediazonium chloride is made from aniline and nitrous acid at:Read the answer and worked solution →Iodobenzene is obtained by treating the diazonium salt with:Read the answer and worked solution →Coupling of benzenediazonium chloride with phenol gives:Read the answer and worked solution →Nitriles reduced with lithium aluminium hydride give:Read the answer and worked solution →Lower aliphatic amines are gases carrying a smell that is:Read the answer and worked solution →Aniline is a resonance hybrid of how many structures?Read the answer and worked solution →Amines are best regarded as derivatives of:Read the answer and worked solution →The geometry around nitrogen in an amine molecule is:Read the answer and worked solution →The C to N to E angle in an amine is less than:Read the answer and worked solution →

Worked practice questions

Water soluble vitamins must be eaten regularly because they are:

  1. Extracted in bile
  2. Expanded in blood
  3. Excreted in urine
  4. Exhausted in muscle
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Correct answer: C. Excreted in urine

1. The B group and vitamin C dissolve in water. 2. The body cannot store them, except for B twelve. 3. They are readily excreted in urine. _Source: syllabus Chemistry Part 2, Unit 10 'Biomolecules'_

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The coagulation of egg white on boiling is an example of:

  1. Decarbonation
  2. Denaturation
  3. Detoxication
  4. Dehydration
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Correct answer: B. Denaturation

1. Heat disturbs the hydrogen bonds in the protein. 2. The protein loses its biological activity. 3. This change is denaturation. _Source: syllabus Chemistry Part 2, Unit 10 'Biomolecules'_

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The sequence of amino acids in a chain is its:

  1. Helical structure
  2. Primary structure
  3. Ternary structure
  4. Crystal structure
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Correct answer: B. Primary structure

1. Each chain has its residues in a fixed order. 2. Change that order and the protein changes. 3. This order is the primary structure. _Source: syllabus Chemistry Part 2, Unit 10 'Biomolecules'_

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