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1.c(i) A single fertilizer refers to a type of fertilizer that contains only one nutrient, such as nitrogen (N), phosphorus (P), or potassium (K). It's like a specialized nutrient boost for plants

1.a (ii) The binomial system of nomenclature is a way of naming living organisms using two words. For example, humans are called Homo sapiens. B. maize is known as Zea mays. 🌽🔍

1a. (I) The binomial system of nomenclature is a way of naming living organisms using two words. It's like giving them a first and last name! For example, humans are called Homo sapiens. 🌿🔍

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WASSCE Integrated Science 2023 LIKELY EXAMINABLE QUESTIONS 1.(a) (i) What is an inorganic fertilizer? (ii) Give three examples of inorganic fertilizers that could be used in maize production. (b) State: (i) two industrial uses each of the following metals: (α) aluminium; (β) copper (b) (ii) Three reasons why gold is regarded as a metal. c) A force acts on a body of mass 15 g and causes the body to move with acceleration of 40.0 ms-2. Calculate the force acting on the body. (d) (i) Give one reason why trypanosome is considered as a parasite. (d) (ii) State two ways of controlling trypanosomiasis (2) (a) Write the IUPAC names of each of the following compounds: (i) FeS; (ii) CH3CH2COOH; (iii) H2SO3; (iv) CH3CHClCH3 (b) (i) List three organelles found in an animal cell (ii) State one function of each of the organelles listed in (b) (i). (c) State three reasons each for carrying out each of the following husbandry practices in poultry production: (i) identification; (ii) debeaking (d) (i) What are radioisotopes? (ii) Name two radioisotopes used in medicine. 3.(a) A student weighed 7.5 g of NaHCO3 in the laboratory. (i) Name the apparatus used. (ii) Calculate the number of moles of the substance weighed [Na = 23, 0 = 16, C = 12, H =1] (b) Explain how each of the following respiratory structures in humans is adapted to its function: (i) nasal chamber; (ii) diaphragm; (iii) alveoli. (c) Suggest five factors that could contribute to cannibalism in a poultry house. (d) (i) Define mechanical advantage as applied to simple machines. (ii) A load of 200N is lifted by a force of 400 N. Calculate the mechanical advantages (4) (a) Describe the processes involved when the eye of a human views an object. (b) (i) (α) What is an unsaturated hydrocarbon? (β) Give two examples of unsaturated (ii) Write down the structural formula for 2-methylpentane. (c) State two benefits each of the following practices in animal production: (i) dehorning; (ii) drenching (d) (i) Explain why a girl in a classroom could see clearly the writing on the board from the back seat but not from the front seat. (ii) Suggest the appropriate remedy to the problem stated in (d) (i). 5.(a) State: (i) Four physical properties of water. (ii) The reason why water is referred to as a universal solvent. (b) (i) Name two gases which contribute to greenhouse effect. (b)(ii) State three effects of greenhouse on climate. (c) (i) What is weathering as used in soil formation? (c)(ii) Explain how hydration aids in the weathering of rocks? (d)(i) State the energy transformation involved in hydroelectric power generation (d)(ii) Explain why the hydroelectric power dam has thicker walls at the base than at the top. (6)(a) (i) What is heat? (ii) State three effects of heat on a substance. (b)(i) Classify each of the following substances as acidic, or basic or neutral: (i) sodium chloride; (ii) tomato juice; (iii) vinegar; (iv) sea water; (v) bicarbonate of sodium. (c) A man with blood group B is married to a woman with blood group B. The woman gave birth to a child with blood group AB. With the aid of genetic diagram, determine whether the man is the father of the child. (d) State four factors a farmer should consider when selecting rabbits for breeding.

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1bi.Two ways to minimize heat losses in a vacuum flask are: 1. Thermal insulation: A vacuum flask is typically made of double-layered glass or metal with a vacuum-sealed space between the layers. This vacuum acts as an insulator, preventing heat transfer through conduction or convection. 2. Reflective coating: The inner surface of a vacuum flask is often coated with a reflective material, such as silver or aluminum. This coating helps to minimize heat transfer through radiation by reflecting thermal radiation back into the flask. BIi.Now, let's calculate the rate of heat loss using the given information: Mass of water (m) = 150 g = 0.15 kg Initial temperature (T1) = 85 °C Final temperature (T2) = 65 °C Time (t) = 5 minutes = 5 * 60 = 300 seconds Specific heat capacity of water (c) = 4,200 J/kg*K The formula to calculate heat loss is: Q = mcΔT Where: Q = heat loss m = mass of the substance c = specific heat capacity ΔT = change in temperature (T2 - T1) Substituting the values into the formula: Q = (0.15 kg) * (4,200 J/kg*K) * (65 °C - 85 °C) Q = (0.15 kg) * (4,200 J/kg*K) * (-20 °C) Q = -126,000 J The rate of heat loss is calculated by dividing the heat loss Q by the time t: Rate of heat loss = Q / t Rate of heat loss = -126,000 J / 300 s Rate of heat loss = -420 J/s The rate of heat loss is -420 J/s, indicating that heat is being lost from the water.

1b I. Elastic deformation is when an object is stretched or compressed, but it returns to its original shape. 2b I. In a vacuum flask, heat losses are minimized through two ways: 1. The flask has a double-walled construction with a vacuum between the walls, which helps to reduce heat transfer by conduction and convection. 2. The inner wall of the flask is coated with a reflective material, such as silver, to minimize heat transfer by radiation.✍🏽