Purification, Classification & Nomenclature
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Questions and Answers

What is the primary suffix added to the word root when the parent chain contains two or more triple bonds?

  • diyne
  • triene
  • yne (correct)
  • triine

    • What is the functional group indicated by the secondary suffix '-oyl chloride'?

  • Aldehyde
  • Ester
  • Acid chloride (correct)
  • Acid amide

    • What is the class of organic compound that includes compounds with the functional group '-OH'?

  • Aldehydes
  • Esters
  • Ketones
  • Alcohols (correct)

    • What is the IUPAC nomenclature system primarily based on?

    <p>The number of carbon atoms in the chain</p> Signup and view all the answers

    What is the term for the root word that denotes the number of carbon atoms present in the chain?

    <p>Word root</p> Signup and view all the answers

    What is the primary indicator of a pure organic solid?

    <p>A sharp and definite melting point</p> Signup and view all the answers

    Which reagent is used to separate a mixture of amines?

    <p>Benzenesulphonyl chloride</p> Signup and view all the answers

    What is the purpose of determining the mixed melting point in organic chemistry?

    <p>To ascertain the purity of a compound</p> Signup and view all the answers

    What is the product of heating an organic compound with dry cupric oxide?

    <p>CO2 and H2O</p> Signup and view all the answers

    What is the purpose of treating pyroligneous acid with milk of lime?

    <p>To separate acetic acid from the mixture</p> Signup and view all the answers

    What is the functional group characteristic of acid anhydrides?

    <p>O || C - O - C</p> Signup and view all the answers

    Which of the following is NOT a characteristic of a homologous series?

    <p>All members have the same functional group</p> Signup and view all the answers

    What is the functional group characteristic of amides?

    <p>O || - C - NH 2</p> Signup and view all the answers

    What is the functional group characteristic of alkynes?

    <p>-C ≡ C -</p> Signup and view all the answers

    What is the general formula for the members of the alcohol family?

    <p>Cn H 2n + 1OH</p> Signup and view all the answers

    What is the purpose of heating a clean copper wire in the Bunsen flame in the Beilstein's test?

    <p>To remove impurities from the wire</p> Signup and view all the answers

    What is the significance of the orange colouration in the CS2 layer in the special test for bromine and iodine?

    <p>It indicates the presence of bromine</p> Signup and view all the answers

    What is the reaction that occurs when phosphorus is detected by fusing the organic compound with sodium peroxide?

    <p>2 P + 5 Na2O2 → 2 Na3PO4 + 2 Na2O</p> Signup and view all the answers

    What is the indication of a white precipitate in the test for sulphur?

    <p>The presence of sulphur</p> Signup and view all the answers

    What is the purpose of adding chlorine water slowly with constant shaking in the special test for bromine and iodine?

    <p>To oxidize the halogens</p> Signup and view all the answers

    What is the purpose of adding silver nitrate in the Carius method?

    <p>To precipitate the halogen</p> Signup and view all the answers

    What is the product formed when an organic compound containing sulphur is heated with fuming nitric acid?

    <p>Sulphuric acid</p> Signup and view all the answers

    What is the formula used to calculate the percentage of chlorine in an organic compound using the Carius method?

    <p>% of Cl = (Mass of AgCl formed / 35.5) x 100 / Mass of substance taken</p> Signup and view all the answers

    What is the purpose of adding barium chloride solution in the Carius method?

    <p>To precipitate the sulphur as barium sulphate</p> Signup and view all the answers

    What is the formula used to calculate the percentage of iodine in an organic compound using the Carius method?

    <p>% of I = (Mass of AgI formed / 235) x 100 / Mass of substance taken</p> Signup and view all the answers

    What is the colour of the precipitate formed when AgBr reacts with NH3?

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

    Which of the following tests is used to detect the presence of nitrogen in an organic compound?

    <p>Soda lime test</p> Signup and view all the answers

    What is the product formed when sodium thiocyanate reacts with ferric chloride?

    <p>Ferric sulphocyanide</p> Signup and view all the answers

    What is the purpose of adding barium chloride solution to the fused mass in the oxidation test for sulphur?

    <p>To precipitate sodium sulphate</p> Signup and view all the answers

    Which of the following reagents is used to detect the presence of halogen in an organic compound?

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

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