KCSE Past Papers 2016 Chemistry paper 1 (233/1)

Kenya certificate of Secondary Education 2016 Chemistry paper 1 1. A student investigated the effect of an electric current by passing it through some substances. The student used inert electrodes and connected a bulb to the circuit. The table below Read More …

KCSE Past Papers 2017 Chemistry Paper 3 (233/3)

Kenya certificate of Secondary Education Practical 2017 Chemistry paper 3 1. You are provided with: • Solution A, 0.5 M copper(II) sulphate • Solid B1, metal B1 powder • Solid B2, Iron powder • Solution C, 0.02 M acidified potassium Read More …

KCSE Past Papers 2017 Chemistry Paper 2 (233/2)

Kenya Certificate of Secondary Education 2017 Chemistry paper 2 1. (a) Name the homologous series represented by each of the following general formulae. (i) CnH2n-2 (1 mark) (ii) CnH2n (1 mark) (b) Compound G is a triester. (i) Give the physical state Read More …

KCSE Past Papers 2017 Chemistry Paper 1 (233/1)

Kenya Certificate of Secondary Education 2017 Chemistry paper 1 1. Table 1 shows the atomic numbers and the first ionisation energies of three elements. The letters are not actual symbols of the elements. Use it to answer the questions that Read More …

KCSE Past Papers 2018 Chemistry Paper 3 (233/3)

Kenya Certificate of Secondary Education Practical 2018 Chemistry paper 3 1. You are provided with: • 0.30 g solid A, magnesium metal • Hydrochloric acid, solution B • 0.15 sodium carbonate, solution C • Methyl orange indicator You are required Read More …

KCSE Past Papers 2018 Chemistry Paper 2 (233/2)

Kenya Certificate of Secondary Education 2018 Chemistry paper 2 1. The diagram in figure I shows some natural and industrial processes. Study it and answer the questions that follows (a) Identify the processes labelled: (2 marks) A………………. B………………. C………………. D………………. Read More …

KCSE Past Papers 2018 Chemistry Paper 1 (233/1)

Kenya Certificate of Secondary Education 2018 Chemistry paper 1 1. (a) Define a soluble base. (1 mark) (b) Aqueous solutions of 2M ethanoic acid and 2M nitric(V) acid were tested for electrical conductivity. Which solution is a better conductor of Read More …