Summary

• Description:

  The MS Word document comprises Nakuru North Joint Mock 2024 Chemistry Paper 1 Exam with Answers and Marking Scheme. The PDF version is also available upon your request. The marking scheme is in a different document.

  It is a KCSE Chemistry Paper 1 (233/1) Theory Joint Mock Examination that was administered in July/August 2024 as part of the Lanet Joint Evaluation Test for secondary schools.

  • Duration: 2 Hours
  • Total Marks: 80
  • Number of Questions: 28

  The paper required candidates to answer all questions in the spaces provided in the question paper. Candidates were allowed to use mathematical tables and silent electronic calculators where necessary.

  It covered the following topics:

  • Allotropy and allotropes of sulphur including transition temperature
  • Basic chemical definitions such as flame, optimum conditions, and reaction end point
  • Properties and applications of dry ice compared to ordinary ice
  • Gas reactions and volumetric calculations involving ethene combustion
  • Qualitative analysis involving copper(II) ions and ammonia complex formation
  • Solubility calculations using saturated solutions
  • Bond energy calculations and enthalpy change for combustion reactions
  • Factors affecting chemical equilibrium and methods of increasing product yield
  • Reactions of magnesium with sulphur (IV) oxide
  • Extraction of iron using the blast furnace and identification of iron ores
  • Combustion reactions occurring in charcoal stoves
  • Electrolysis of dilute sulphuric (VI) acid and Faraday calculations
  • Radioactive decay and determination of half-life
  • Paper chromatography and separation of pigments
  • Preparation of magnesium oxide from magnesium sulphate solution
  • Qualitative analysis of ions using acidified barium chloride
  • Preparation of cleansing agents through saponification
  • Acid-base theory and identification of acids and bases in reactions
  • Reaction of chlorine with hot concentrated sodium hydroxide
  • Laboratory preparation and collection of oxygen gas
  • Electronic configurations in sulphur compounds
  • Graham’s law of diffusion and diffusion rate calculations
  • Reactions of metals with dilute acids and separation of residues and filtrates
  • Processes such as deliquescence and efflorescence
  • Periodic trends including comparison of atomic sizes
  • Factors affecting reaction rates including particle size and surface area
  • Laboratory methods for separating mixtures such as iodine and sodium chloride
  • Esterification reactions involving methanol and ethanoic acid
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  CHEMISTRY

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