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CUET UG Amines and Biomolecules — practice questions — page 5

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 121–150 of 168.

In the IUPAC system primary amines are named as:Read the answer and worked solution →Nitro compounds are reduced to amines by hydrogen over:Read the answer and worked solution →Reduction of nitro compounds with iron scrap uses which acid?Read the answer and worked solution →Reduction of a nitrile gives an amine with how many more carbons?Read 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 →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 →Prolonged heating of glucose with hydrogen iodide gives:Read the answer and worked solution →

Worked practice questions

In the IUPAC system primary amines are named as:

  1. Alkanamides
  2. Alkanoamines
  3. Alkanamines
  4. Alkanenitrils
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Correct answer: C. Alkanamines

1. The final e of the alkane name is dropped. 2. The word amine is put in its place. 3. Primary amines are therefore alkanamines. _Source: syllabus Chemistry Part 2, Unit 9 'Amines'_

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Nitro compounds are reduced to amines by hydrogen over:

  1. Manganese
  2. Magnesium
  3. Molybdenum
  4. Palladium
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Correct answer: D. Palladium

1. Hydrogen gas is passed over a finely divided metal. 2. Nickel, palladium or platinum will serve. 3. Palladium is one of these catalysts. _Source: syllabus Chemistry Part 2, Unit 9 'Amines'_

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Reduction of nitro compounds with iron scrap uses which acid?

  1. Hydrochloric
  2. Hydrocyanic
  3. Hydrofluoric
  4. Hydrobromous
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Correct answer: A. Hydrochloric

1. Iron scrap is used with an acid in this reduction. 2. The ferrous chloride formed hydrolyses and releases the acid again. 3. The acid used is hydrochloric acid. _Source: syllabus Chemistry Part 2, Unit 9 'Amines'_

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