Chemistry · 2022

CSS 2022 Chemistry Paper II

7 questions from this paper.

  1. Q1
    Compare SN1 and SN2 reaction mechanisms with respect to kinetics, stereochemistry, and the effect of solvent. Why do tertiary halides prefer SN1?
    Past paper Reaction Mechanisms 20 marks
  2. Q2
    Describe the mechanism of Electrophilic Aromatic Substitution (EAS). Explain why the -OH group is ortho-para directing while the -NO2 group is meta directing.
    Past paper Aromatic Substitution 20 marks
  3. Q3
    What are Enantiomers and Diastereomers? Discuss the R/S nomenclature system with examples and explain the concept of Meso compounds.
    Past paper Stereochemistry 20 marks
  4. Q4
    Explain the principle of IR Spectroscopy. How can you distinguish between an alcohol, a carboxylic acid, and a ketone using IR data?
    Past paper Spectroscopy 20 marks
  5. Q5
    Discuss the synthesis and reactivity of Pyrrole and Pyridine. Why is Pyridine more basic than Pyrrole?
    Past paper Heterocyclic Chemistry 20 marks
  6. Q6
    What are Carbohydrates? Discuss the structure of Glucose and explain the phenomenon of Mutarotation.
    Past paper Biochemistry 20 marks
  7. Q7
    Explain the causes and effects of Global Warming. Discuss the role of CFCs in Ozone layer depletion and the chemical reactions involved.
    Past paper Environmental Chemistry 20 marks

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