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NEET UG Amines and Biomolecules — practice questions — page 6

Explore 207 free Amines and Biomolecules questions in NEET 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 151–180 of 207.

Reduction of a nitrile gives an amine with how many more carbons?Read the answer and worked solution →Does it react with a primary amine only?Read the answer and worked solution →Fill the gaps on amine chemistryRead the answer and worked solution →Pick the right answer, quicklyRead the answer and worked solution →Ammonolysis of alkyl halides is carried out in a sealed tube at:Read the answer and worked solution →Replacing the diazo group by chlorine using a copper one salt is the:Read the answer and worked solution →Insulin and albumin are examples of which class of protein?Read the answer and worked solution →Oxidation of glucose with nitric acid gives:Read the answer and worked solution →Enzymes speed a reaction by lowering its:Read the answer and worked solution →In the DNA double helix adenine pairs with:Read the answer and worked solution →Which set of vitamins is fat soluble?Read the answer and worked solution →A chain of more than ten amino acids is called a:Read the answer and worked solution →Carbohydrates are also known by which other name?Read the answer and worked solution →Polysaccharides are also called non-sugars because they are not:Read the answer and worked solution →Match each name to the reaction it labelsRead the answer and worked solution →The carbon whose hydroxyl decides alpha or beta glucose is called:Read the answer and worked solution →Amino acids the body cannot make and must eat are called:Read the answer and worked solution →The dipolar ion form of an amino acid is called a:Read the answer and worked solution →Which amino acid is not optically active?Read the answer and worked solution →Most naturally occurring amino acids carry which configuration?Read the answer and worked solution →The bond joining two amino acids in a protein is a:Read the answer and worked solution →Keratin and myosin are examples of which class of protein?Read the answer and worked solution →On denaturation a protein loses which structures?Read the answer and worked solution →Almost all enzymes are which kind of protein?Read the answer and worked solution →The sugar found in a DNA molecule is:Read the answer and worked solution →Which base occurs in RNA but not in DNA?Read the answer and worked solution →A base attached to a sugar without phosphate is called a:Read the answer and worked solution →Oligosaccharides give on hydrolysis how many monosaccharide units?Read the answer and worked solution →Sugars that reduce Tollens' reagent are called:Read the answer and worked solution →Glucose is an aldohexose also known as:Read the answer and worked solution →

Worked practice questions

Reduction of a nitrile gives an amine with how many more carbons?

  1. Nine more
  2. One more
  3. Two more
  4. Four more
Show answer and solution

Correct answer: B. One more

1. The cyano carbon is retained in the product. 2. It adds to the chain that was already there. 3. So the amine has one carbon more than the start. _Source: syllabus Chemistry Part 2, Unit 9 'Amines'_

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Does it react with a primary amine only?

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Left
Primary only
Items
  1. Item
    Chloroform, KOH
    Answer
    Primary only
  2. Item
    Gabriel route
    Answer
    Primary only
  3. Item
    Bromamide route
    Answer
    Primary only
  4. Item
    Nitrous acid gas
    Answer
    Primary only
  5. Item
    Mineral acid
    Answer
    Any amine
  6. Item
    Alkyl halide
    Answer
    Any amine
  7. Item
    Water solvent
    Answer
    Any amine
  8. Item
    Organic solvent
    Answer
    Any amine
Right
Any amine
Instructions
Swipe left for Primary only, right for Any amine.
_Source: syllabus Chemistry Part 2, Unit 9 'Amines'_

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Fill the gaps on amine chemistry

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Missing parts
  1. Answer
    ammonia
    Choices
    1. ammonia
    2. methane
    3. benzene
  2. Answer
    pyramidal
    Choices
    1. pyramidal
    2. octahedral
    3. square planar
  3. Answer
    4.75
    Choices
    1. 4.75
    2. 1.75
    3. 9.45
  4. Answer
    primary
    Choices
    1. primary
    2. secondary
    3. tertiary
Complete the statement
Amines come from {0} by swapping hydrogen for alkyl groups. Their shape at nitrogen is {1}. The pKb of ammonia is {2}. The isocyanide test detects a {3} amine.
Instructions
Tap a word to drop it into the empty slot.
_Source: syllabus Chemistry Part 2, Unit 9 'Amines'_

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More Chemistry topics

Chemical KineticsAldehydes, Ketones and Carboxylic AcidsEquilibriumRedox ReactionsHydrocarbonsChemical Bonding and Molecular StructureSolutionsStructure of Atom