Automated PLE Science Exam Paper Generator

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Raised dish drying rack (or Plate stand). (b) (i) Keeps plates away from crawling insects, dogs, and chickens (ii) Prevents mud and dust splashes from dirtying clean plates. (c) The ultraviolet (UV) rays of sunlight kill harmful bacteria on the plates.

💡 Examiner Deduction Warning: Award 4 marks for complete sanitation rationale.

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Amniotic fluid (b) Accept any two of: - Transports oxygen and nutrients from placenta to foetus - Transports carbon dioxide and metabolic waste products from foetus to placenta - Transports antibodies and hormones to the foetus - Attaches the foetus to the placenta (c) Ovary

💡 Examiner Deduction Warning: Cognitive Level: Knowledge & Comprehension (K & C).

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Paraffin is a corrosive poison. Inducing vomiting will cause the chemical to burn the throat and esophagus a second time as it flows back up, or it can be inhaled into the lungs. (b) Give them plenty of cold milk to coat the stomach lining and dilute the chemical, then rush them to a hospital immediately. (c) Induce vomiting to remove the toxic substance from the stomach and give them milk to dilute the toxic concentrations. 💡 Would you like me to compile these exact evaluation questions into a ready-to-print, beautifully formatted PDF worksheets file for your classroom tests?

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Accept any two of: - Overgrown bushy compound and tall grass - Presence of stagnant water pools - Scattered empty tins, plastic bottles, and broken containers holding water - Poor disposal of human faeces and unhygienic latrines - Open, rotting rubbish heaps near classrooms (b) Accept any two of: - Malaria - Bilharzia (Schistosomiasis) - Cholera - Typhoid fever - Dysentery

💡 Examiner Deduction Warning: Cognitive Level: Application (A).

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Mulching: Conserves soil moisture (and suppresses weeds) (b) Pruning: Removes unwanted extra branches and prevents rotting of fruits (c) Thinning: Prevents overcrowding of plants in the garden (d) Weeding: Removes unwanted competitive plants from the garden

💡 Examiner Deduction Warning: Cognitive Level: Comprehension (C). Strict 1-to-1 matching.

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) To prevent the sow from rolling over and crushing her piglets to death. (b) To allow urine and droppings to fall through so the floor stays dry, preventing foot rot. (c) (i) Drenching / Deworming (ii) Hand spraying / vaccination / hoof trimming.

💡 Examiner Deduction Warning: Standard 4-mark UNEB livestock question.

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) The gradual introduction of semi-solid and solid complementary foods to an infant alongside breast milk. (b) At 6 months of age. (c) The infant's digestive system is immature and cannot digest solid starches (or high risk of contamination/diarrhea). (d) Plain porridge lacks protein and causes Kwashiorkor.

💡 Examiner Deduction Warning: Mark strictly on age (6 months) and digestive maturity.

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) (i) Sanitation: The general cleanliness of the environment to promote public health / steps taken to keep an area clean. (ii) Personal hygiene: The cleanliness of the body and the materials used to clean it. (b) Accept any two of: - Sweeping rubbish from the compound - Picking up littered rubbish and disposing of it in dustbins or rubbish pits - Slashing tall grass and clearing bushes around the compound - Draining stagnant water to destroy mosquito breeding grounds - Scrubbing and cleaning latrines and urinals regularly

💡 Examiner Deduction Warning: Cognitive Level: Knowledge & Application (K & A).

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) The tin can crushed / collapsed inward. (b) Cold water condensed the steam inside into liquid water, creating a partial vacuum (low air pressure) inside. The higher atmospheric air pressure outside crushed the can inward. (c) Condensation (gas/steam turning into liquid water).

💡 Examiner Deduction Warning: A classic 4-mark PLE question.

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Accept any two of: - Accessibility of the site - Nearness to a water source for watering young seedlings - Type and drainage of soil - Availability of adequate land - Security against stray livestock and fire outbreaks (b) Accept any two of: - Provides timber and building poles for sale - Provides firewood and wood fuel - Provides shade and purifies the air - Can be used for apiculture (bee farming) - Creates employment opportunities

💡 Examiner Deduction Warning: Cognitive Level: Application (A).

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Dry banana peelings (or dry bean plant leaves). (b) Filtration (followed by evaporation/crystallization to get solid crystals). (c) Any two of: Used to soften/tenderize food (like dry beans) during cooking. Used as a food preservative for meat and fish. Used as a pesticide. Used as local medicine to cure minor stomach upsets.

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Boiling (or adding water treatment chemicals/chlorinating). (b) To remove large physical suspended dirt and impurities. (c) To kill disease-causing germs to make the water safe for drinking. (d) Decantation.

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Accept any two of: - High environmental temperature / dry hot weather - High fever - Direct injury or physical blow / punch to the nose - Nose picking (damaging delicate blood vessels) - Rupture of delicate blood capillaries due to high blood pressure (b) Accept any two of: - Pinching the soft part of the nose firmly for 5 to 10 minutes - Applying a cold compress or ice pack over the bridge of the nose - Leaning the head slightly forward (never backward, to prevent swallowing blood) - Loosening tight clothing around the neck and chest

💡 Examiner Deduction Warning: Cognitive Level: Application (A).

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) Lukewarm water. (b) Lukewarm water opens up sweat pores to let out excess body heat, whereas very cold water causes shivering (which reflexively increases internal body heat production). (c) Any two of: Passing out stools with blood and mucus, severe abdominal/stomach pain, high fever, or vomiting. 📝 Would you like me to compile these exact exam questions into a printable PDF assessment worksheet for your class's end-of-term revision?

✅ Official UNEB Section B Scoring Guide (Total: 4 Marks):

(a) A short circuit is an accidental direct connection between live and neutral wires with near-zero resistance, resulting in dangerously high current flow. (b) 1. Frayed, worn-out, or damaged insulation on cables. 2. Overloading multi-plug sockets with heavy appliances. (c) Ordinary water contains dissolved minerals and is a good electrical conductor, which will shock and electrocute anyone attempting to put out the fire.

💡 Examiner Deduction Warning: Never use water on electrical fires—use dry powder or carbon dioxide fire extinguishers.