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*Chemistry Practical*ALT C *Question 2* All your burette readings (initials and final), as well as the size of your pipette, must be recorded but no account of experimental procedure is required. All calculations must be done in your answer booklet. J is a mixture of two inorganic salts. Carry out the following exercises on F. Record your observations and identify any gas(es) evolved. State the conclusions you draw from the result of each test. (a) Put all of F in a beaker and add about 10 cm³ of distilled water. Stir well and filter. Keep the filtrate and the residue. (b)(i) To about 2cm³ of the filtrate. add NaOH(aq) in drops and then in excess. (ii) To another 2cm³ portion of the solution, add a few drops of NH3(aq) in drops and then in excess. (c) To about 2cm³ of the solution, add a few drops of HNO3(aq) followed by few drops of the drops of AgNO3(aq) (d)(i) Put all the residue into a clean test-tube and add HNO3(aq) (ii) To a portion of the solution from (d)(i)) add NaOH(aq) in drops and then in excess.

*Chemistry Practical*ALT C *Question 2* All your burette readings (initials and final), as well as the size of your pipette, must be recorded but no account of experimental procedure is required. All calculations must be done in your answer booklet. J is a mixture of two inorganic salts. Carry out the following exercises on F. Record your observations and identify any gas(es) evolved. State the conclusions you draw from the result of each test. (a) Put all of F in a beaker and add about 10 cm³ of distilled water. Stir well and filter. Keep the filtrate and the residue. (b)(i) To about 2cm³ of the filtrate. add NaOH(aq) in drops and then in excess. (ii) To another 2cm³ portion of the solution, add a few drops of NH3(aq) in drops and then in excess. (c) To about 2cm³ of the solution, add a few drops of HNO3(aq) followed by few drops of the drops of AgNO3(aq) (d)(i) Put all the residue into a clean test-tube and add HNO3(aq) (ii) To a portion of the solution from (d)(i)) add NaOH(aq) in drops and then in excess.

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2a. C-Tapeworm D- Grain Weevil bi. Pest-D ii. Parasite-C ci. organism D ii.-Wheat -Corn -Beans iii. Organism C iv-Cattle. -Sheep -Pigs d. C-Cause anaemia in farm animals -Lead to the death of farm animals D- Reduce quality of grains -Destroy grains f. C-Deworming farm animals -Practising proper farm hygiene D-Early harvest of crops -Applying pesticides

3. Iv.inductor V.Diode Vii.Transistor Viii.AC supply B.ii. stores electrical charges Iii. Opposes the flow of electrical current Vi.Emits light when current flows through Viii. Supply alternating current (AC) to a circuit C. Capacitor (II) Transistor (VII)

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SOLUTIONS CROSS CHECK 1. 396 birds 2. I and II only 3. Ewes come on heat within a short period of time 4. 75kg 5. Emits sparks 6. A floating body displaces its own weight 7. Carbon, hydrogen and Oxygen 8. 32 weeks 9. 40seconds 10. Dipping 11. Anaerobic fermentation of organic waste 12.Polymerization 13.Coagulate milk Protein 14. View near object but not far object 15. for preparing soap 16. cobalt 17. 66.7J 18. I and III only 19. global warming 20. close to the ground 21. Heavier than air 22. Iris 23. Cabbage 19. Multiple alleles 9. Biogas is produced from A. anaerobic fermentation of organic waste. 10. B improving soil texture 50. Excess amino acids in the body undergo the process of A. deamination. 11. D 40 weeks 12 It is more advantageous to use solar energy than fossil fuel energy because solar energy is renewable and B. fossil fuels produce carbon dioxide. 29. The principle of flotation states that a floating body A. displaces its own weight of fluid in which it floats. 8. D 360 27. A stable mulch 15. Carhon (IV) oxide is used to extinguish fires because it is heavier than air. 43. A cobalt 47.B 6.02X10 to power 20 26.A Troposphere 23. B emits sparks 45. 0.25 A 6.A Aris 7. B. During digestion, rennin in the stomach coagulates milk protein. 14. B Carrot and cassava 17. B Measles 19. D close to the ground 21. D Protons outnumber electrons in a neutral atom. 24. C calcium carbonate CaCo3 25. C dusting 30. An example of a leaky vesctanic s is cabbage. A 31. A 66. 7 J 32. C Polymerization 35z The protoplasm of a cell is made up of cytoplasm and nucleus. C 36. we cannot determine the number of neutrons in the nucleus or the relative atomic mass of the element based solely on the symbol. A. 37. Swellings on stems can be an indication of fungal infection in a vegetable nursery. B 38. Carbohydrates contain carbon, hydrogen, and oxygen. D 39. B 0.050 mol 40. D blood group O 41. D wheel and axle 44. D nitrogen 46. Night blindness is a disease that can be caused by vitamin deficiency, specifically a deficiency in vitamin A. 48. The practice whereby shade is gradually removed from seedlings is referred to as hardening off. B

SOLUTIONS KINDLY CROSS CHECK 1. 396 birds 2. I and II only 3. Ewes come on heat within a short period of time 4. 75kg 5. Emits sparks 6. A floating body displaces its own weight 7. Carbon, hydrogen and Oxygen 8. 32 weeks 9. 40seconds 10. Dipping 11. Anaerobic fermentation of organic waste 12.Polymerization 13.Coagulate milk Protein 14. View near object but not far object 15. for preparing soap 16. cobalt 17. 66.7J 18. I and III only 19. global warming 20. close to the ground 21. Heavier than air 22. Iris 23. Cabbage

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5di. Three problems contributing to poor pig production in Ghana are: 1. Disease Outbreaks: Pigs are susceptible to various diseases, and inadequate disease management and biosecurity measures can lead to frequent outbreaks. Diseases like African Swine Fever and Porcine Respiratory and Reproductive Syndrome can significantly reduce pig populations and productivity. 2. Limited Access to Quality Feeds: Inadequate access to high-quality pig feed is a common issue in Ghana. Poor nutrition can result in stunted growth and low reproductive rates among pigs, impacting overall production. 3. Lack of Modern Farming Practices: Many pig farmers in Ghana still use traditional and less efficient farming methods. Limited access to modern breeding techniques, housing, and management practices can lead to suboptimal growth rates and low piglet survival rates, affecting the industry's productivity.

5ci. Immovable Joint: The skull sutures, such as the coronal suture, are examples of immovable joints in the human body. Movable Joint: The knee joint is an example of a movable joint in the human body.

5cii. Diaphragm: The diaphragm is responsible for the main muscular action involved in breathing. When it contracts, it flattens and creates a negative pressure in the chest cavity, allowing for inhalation. Intercostal Muscle: Intercostal muscles help expand and contract the ribcage during breathing. They play a crucial role in the expansion of the chest cavity during inhalation and the contraction during exhalation. Ribs: Ribs protect vital organs in the chest, such as the heart and lungs, from injury and provide structural support to the chest cavity. They also play a role in aiding the expansion and contraction of the chest during breathing.

6aii. Two examples of abiotic factors in an ecosystem are: 1. Temperature: The temperature of an ecosystem, whether it's hot or cold 2. Soil pH: Soil pH refers to the acidity or alkalinity of the soil.

1. d(ii) Sure! Two practical examples where evaporation leads to cooling are sweating, which cools down our bodies when the sweat evaporates, and the use of evaporative coolers, which work by evaporating water to cool the air in hot and dry climates. It's like nature's way of keeping things cool