Summary

• Description:

  The PDF document comprises SUKELLEMO JOINT PREMOCK 1 Chemistry Paper 2 2024 Mock Exam with Answers (Marking Scheme). The marking scheme is in a different document.

  It was a KCSE Chemistry 233/2 examination.

  This paper presents a thorough diagnostic test of secondary school chemistry, requiring advanced data interpretation, industrial process pathway mapping, graph work, and stoichiometric calculations. It equips candidates with the requisite analytical and problem-solving skills for KCSE Chemistry Paper 2.

  • Duration: 2 Hours
  • Total Marks: 80
  • Number of Questions: 7 (Questions 1 - 7)
  • Structure: The paper consists of seven compulsory, long-structured questions covering comprehensive multi-topic content, including graphical plotting and industrial flowchart analysis.

  It covers the following topics:

  • Periodic table trends: atomic and ionic radii, chemical reactivity, ionization energy trends, and chemical bonding across periods and groups
  • Solubility and separation: definitions of saturation, fractional crystallization, solubility graph plotting, and solubility determination at varied temperatures
  • Industrial manufacturing flowcharts: Haber process for ammonia synthesis, Contact process for sulphuric acid, and nitrogenous fertilizer calculations
  • Gas chemistry: laboratory preparation of dry hydrogen gas, apparatus setup error analysis, molar volume calculations, and safety protocols
  • Redox chemistry: reduction of copper(II) oxide using carbon(II) oxide, environmental considerations, and chemical properties of toxic gases
  • Halogen chemistry: preparation and collection of dry chlorine, bleach action on litmus, reactions with phosphorus, and hydrogen sulphide displacement
  • Industrial manufacture of oxygen: fractional distillation of liquid air, purification chambers, uses of industrial gases, and conditions necessary for iron rusting
• File Size:

  261.09 KB
• Length:

  14 pages
• Category:

  Mock Past Papers
• Level:

  Form 4
• Subject:

  Chemistry
• Posted By:

  Caleb_Peter

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