Month: August 2022

Kenya certificate of primary Education Practical 2019 Chemistry paper 3 1. You are provided with: •Solution A aqueous Iron(III) sulphate. • Solution B aqueous potassium iodide. • Solution C mixture of aqueous starch and sodium thiosulphate solution. You are required to determine the rate of Read More …

KCSE Past Papers 2019 Chemistry paper 2(233/2) Kenya Certificate of Secondary Education 2019 Chemistry paper 2 1. (a) Alkanes are said to be saturated hydrocarbons. (i) What is meant by saturatcd hydrocarbons. (1 mark) (ii) Draw the strucuire of the third member of Read More …

Kenya certificate of Secondary Education 2019 Chemistry paper 1 1. An atom of element A has mass number 39 and 19 protons. (a) Write the electron arrangements of the atom (1 mark) (b) State the period and group to which Read More …

Chemisry Paper 2 Answers Kenya certificate of Secondary Education 2020 Chemistry paper 2

Kenya certificate of Secondary Education 2020 Chemistry paper 2 1. Crude oil is a mixture of hydrocarbons which are separated by fractional distillation. One of the components obtained contains an alkane A, with eleven carbon atoms. (a) Write the molecular Read More …

Kenya certificate of Secondary Education 2020 Chemistry paper 1 1. Element A has mass number 40 and 21 neutrons. (a) Write the electron arrangement of element A.(1 mark) (b) Give the formula of the compound formed when element A reacts Read More …

KCSE Past Papers 2021 Chemistry Paper 1 (233/1) KCSE Past Papers 2021 Chemistry Paper 2 (233/2) KCSE Past Papers 2021 Chemistry Paper 3 (233/3) KCSE Past Papers 2020 Chemistry Paper 1 (233/1) KCSE Past Papers 2020 Chemistry Paper 2 (233/2) Read More …

Biology – Paper 2 -2010 1. . a) Respiration (Rej: external respiration/ anaerobic respiration ) Acc: aerobic respiration. b) i) Rise/ increase in thermometer / temperature reading. ii) stored starch/ glucose/ carbohydrates in germination seeds are broken down/ oxidized to Read More …

Biology 2010 Paper 1 (231/1) 1. (a) Cytology: Rej cell biology (b) Microbiology 2. (a) Stem (b) i) Monocotyledonae ii) Vascular bundles scattered not arranged in a ring; Absence of pith; Absence of vascular cambium. (c) Epidermis 3. (a) Protein Read More …

BIOLOGY (231) Biology Paper 1 (231/1) 1 (i) Nephritis; (ii) kidney stones; (2 marks) 2 (a) equatioon (b)Dental carries; Periodontal/gingivitis/pyorhoea; (2 marks) 3(i) Identify similarities and differences between organisms; (ii) Organize scientific knowledge in an orderly system; (iii) Monitor emergence, Read More …