Day: August 29, 2022

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 …

Biology Paper 1 (231/1) 1 a)Is when the rate of water loss is more than the rate of absorption and the plant droops; l mark b)The rate of active transport increases with increase intemperature up to the optimum temperature; 1 Read More …

4.4.3 Biology Paper 3 (231/3) 1. (a) (i) Bubbles / gas formed/effervescence/foam/frith; lime water turns white/white ppt/milky/cloudy; (2 marks) (ii) Gas produced is carbon (IV) Oxide/C02/carbon dioxide; which reacts with lime water to form a white precipitate/calcium carbonate/ insoluble sent; Read More …

Biology Paper 2 (231/2) SECTION A (40 marks) 1. (a) ‘ Fruit fleshy/juicy/succulent;   Fruit brightly coloured/large/inclusters; Fruit scented has sweet smell/sweet aroma; Seeds have tough/hard testa; Some seeds have sticky/mucoid secretions; Fruits have hooks;(max 4 marks) (b) (i) Luteinising Read More …

Biology 2014 4.4.1 Biology Paper 1 (231/ 1) 1. (a) Acquisition and utilization of nutrients; (1 mark) (b) Elimination of metabolic wastes to prevent accumulation to toxic level; (1 mark) 2. (a) A period of rest in which a seed Read More …

    Biology Paper 2 (231/2) No. 1 a) Name the part labeled S. (1 mark) ❖ Chorion b) (i) Name the types of blood vessels found in the structure labeled Q. (2 marks) ❖ Arteries; veins (ii) State the Read More …