23 Organic Reactions MCQ1
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Questions and Answers

What is the role of Ni catalyst in Substitution Reactions?

  • To facilitate the ionic addition of Br₂, Cl₂, or HCl across C=C in ethene
  • To increase the yield of esterification reaction
  • To increase the rate of reaction (correct)
  • To facilitate the joining of small molecules to form larger molecules
  • What is the type of reaction when a small molecule is removed from a large molecule, leaving a C=C behind?

  • Esterification reaction
  • Elimination reaction (correct)
  • Substitution reaction
  • Redox reaction
  • What is the name of the reaction between carboxylic acids and alcohols?

  • Redox reaction
  • Hydrolysis
  • Esterification (correct)
  • Polymerisation
  • What is the term for the joining together of small molecules to form larger molecules?

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

    What is the term for the chemical decomposition of a substance by water, with water itself also being decomposed?

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

    What is the type of reaction that involves the use of an oxidising agent, such as Potassium Permanganate or Sodium Dichromate?

    <p>Redox reaction</p> Signup and view all the answers

    What is the type of alcohol where the carbon attached to the OH group is attached to only one other carbon?

    <p>Primary alcohol</p> Signup and view all the answers

    What is the characteristic of the carbon attached to the OH group in secondary alcohols?

    <p>Attached to 2 other carbons</p> Signup and view all the answers

    What is the purpose of U.V. light in the initiation step of free radical substitution?

    <p>To split Cl2 into 2 Cl free radicals</p> Signup and view all the answers

    What is the result of the Br⁺ attacking the C=C in the halogenation of alkenes?

    <p>The C=C bond is broken</p> Signup and view all the answers

    What is the term used to describe the process of Br2 being split into Br+ and Br-?

    <p>Heterolytic Fission</p> Signup and view all the answers

    What is the characteristic of the Cl free radical in the propagation step of free radical substitution?

    <p>It is very reactive</p> Signup and view all the answers

    What is the product of the reaction between a Cl free radical and a methane molecule?

    <p>HCl and a methyl radical</p> Signup and view all the answers

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