Summary

• Description:

  The MS Word document comprises LENANA SCHOOL NAIROBI INTERNAL EXAMS Chemistry Paper 2 2026 Mock Exam with Answers (Marking Scheme). The PDF version is also available upon your request. The marking scheme is in a different document.

  It was a KCSE Chemistry Paper 2 examination.

  This assessment examines theoretical mastery and quantitative reasoning across advanced chemistry concepts. It tests competencies in nuclear transformations, polymer chemistry, organic reaction pathways, electrochemistry, periodic trends, qualitative analysis, and industrial extraction metallurgy.

  • Total Marks: 80
  • Number of Questions: 7 (Questions 1-7)
  • Structure: Seven structured theory questions covering physical, organic, and inorganic chemistry.

  It covers the following topics:

  • Radioactivity: Nuclear fission versus fusion, half-life decay curves, and radiation hazards
  • Organic chemistry: Polymerization (polyacrylonitrile fibers), detergent additives, stoichiometry of ethanol synthesis, and functional group qualitative analysis
  • Electrochemistry: Faraday's laws of electrolysis, standard electrode potentials, electrochemical cells, and redox equations for rusting
  • Atomic structure and the Periodic Table: Ionization energy trends, atomic and ionic radii, chemical reactivity, and dot-and-cross bonding diagrams
  • Qualitative analysis: Systematic cation and anion confirmatory testing and copper alloy dissolution reactions
  • Non-metals and their compounds: Oxides of sulfur and carbon, reduction of carbon (IV) oxide by carbon, and gas collection techniques
  • Industrial extraction of metals: Lead extraction from ore, blast furnace reactions, slag formation, and environmental pollution mitigation
• File Size:

  520.58 KB
• Length:

  12 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Chemistry
• Posted By:

  Caleb_Peter

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