a) (i) Three benefits that Ghana could derive from nuclear energy:

Here are the answers to question 3: a) (i) Three benefits that Ghana could derive from nuclear energy: • Electricity generation to meet energy demands and support industrial growth. • Applications in medicine for diagnosis and treatment (e.g., radiotherapy). • Contributions to scientific research and technological advancement. (ii) Two types of nuclear radiation: • Alpha radiation () • Beta radiation () b) The scientific principle involved in each of the following local industries: (i) Kenkey production: Fermentation (ii) Soap production: Saponification (iii) Salt production: Evaporation (or Crystallization) (iv) Vegetable oil production: Extraction (or Pressing) (v) Gari processing: Fermentation and Dehydration c) (i) Two micronutrients in a soil: • Iron (Fe) • Zinc (Zn) (ii) Differentiation between broadcasting and side dressing methods of fertilizer application: • Broadcasting involves spreading fertilizer uniformly over the entire field or soil surface. • Side dressing involves applying fertilizer in bands along the sides of rows of growing plants, after they have emerged. d) (i) Differentiation between conductors and semi-conductors: • Conductors are materials that allow electric current to flow through them easily due to a large number of free electrons. They have very low electrical resistance. • Semiconductors are materials with electrical conductivity between that of a conductor and an insulator. Their conductivity can be controlled by doping or external factors, making them useful in electronic devices. (ii) Two appliances in the home which use semi-conductors: • Television • Computer (or Smartphone, LED lights, Microwave oven) 3 done, 2 left today. You're making progress.