Automated PLE Science Exam Paper Generator

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

(a) Foot rot. (b) Wet, muddy, and dung-filled dirty floors. (c) (i) Regularly trim overgrown hooves (ii) Walk goats through a copper sulphate footbath (iii) Keep pens clean and dry (use slatted floors).

💡 Examiner Deduction Warning: Practical veterinary question.

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

(a) First class lever (b) Load × Load Arm = Effort × Effort Arm (Clockwise moments equal Anticlockwise moments) (c) Accept any two of: - Pair of scissors - See-saw - Claw hammer (when pulling out nails) - Beam balance - Pliers

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

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

(a) Accept any two of: - Common diseases affecting people in the community - Pit latrine and sanitation coverage - Immunization coverage among infants and children - Sources of safe drinking water - Nutritional and food security status (b) Accept any two of: - Helps identify community health needs and challenges - Determines the health and sanitation status of the community - Helps government and NGOs plan and allocate medical resources effectively - Creates health awareness and sensitization among community members

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

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

(a) (i) Zinc can (negative terminal). (ii) Carbon / Graphite rod with brass cap (positive terminal). (b) It acts as the chemical electrolyte that allows ionic conduction of charges. (c) The active chemicals (zinc and ammonium chloride) are completely consumed by the chemical reaction.

💡 Examiner Deduction Warning: Zinc serves as both the container and the negative terminal.

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

(a) Volume: The loudness or softness of a sound (b) Pitch: The highness or lowness of a sound (c) Frequency: The number of vibrations (cycles) per second (d) Echo: Reflected sound

💡 Examiner Deduction Warning: Cognitive Level: Knowledge (K). Exact UNEB definitions required.

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

(a) (i) Orange (ii) Violet (b) Due to the difference in speeds and wavelengths of the different colors of light as they travel through glass (c) A rainbow is formed when white sunlight is refracted, dispersed, and totally internally reflected by airborne raindrops acting as tiny prisms

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

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

(a) An ordinary pit latrine requires a tight-fitting lid over its drop hole, whereas a VIP latrine must be left open without a lid at all times. (b) Wood ash (or soil/lime) is sprinkled over the feces. Its role is to dehydrate the waste, neutralize smells, and raise pH to destroy pathogens. (c) Never throw hard materials (like stones, pads, or newspapers) into the bowl to prevent blockage. TOPIC 12: THE REPRODUCTIVE SYSTEM

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

(a) To suck out foul odours from the pit and expel them high into the air. (b) To trap flies so they cannot escape and spread disease germs. (c) (i) Wind blowing across the top of the vent pipe draws out smelly gases continuously (ii) The latrine interior is kept dark, forcing air currents up the pipe.

💡 Examiner Deduction Warning: Classic 4-mark UNEB sanitation question.

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

(a) (i) Guitar, Lyre, Bow harp ("Adungu"), Violin, or Banjo. (ii) Drum, Long drum, Bell, Xylophone, or Thumb piano. (b) Mechanical method (e.g., physical grooves), Magnetic method (tapes), Electromagnetic method, or Digital recording.

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

(a) Accept any two of: - Causes liver cirrhosis (liver damage) - Causes high blood pressure and heart attacks - Causes brain and nerve damage (loss of memory / coordination) - Causes stomach ulcers (b) Accept any two of: - Leads to domestic violence and child neglect - Leads to poverty through wasting family income on alcohol - Leads to family breakdown and divorce - Leads to loss of jobs and unemployment

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

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

(a) (i) Biceps (ii) Triceps [2 marks - Reject: Flexors / Extensors] (b) Muscles produce movement and locomotion // Cardiac muscles pump blood // Diaphragm/intercostal muscles aid breathing // Sphincter muscles control urine release [1 mark] (c) Prevents bone deformities // Prevents backaches, neck, and chest pains // Aids proper food digestion // Helps internal organs function properly [1 mark]

💡 Examiner Deduction Warning: In part (a), candidates who write 'flexors and extensors' score 0. Examiners require the proper anatomical names: Biceps and Triceps.

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

(a) Step 1: Measure one litre of clean boiled water and pour it into a clean container. Step 2: Add eight level teaspoons of sugar into the water. Step 3: Add one level teaspoon of salt and stir thoroughly until completely dissolved. (b) To replace lost water and essential mineral salts (prevents severe dehydration)

💡 Examiner Deduction Warning: Cognitive Level: Application (A). Strict recipe proportions: 1 litre water + 8 level teaspoons sugar + 1 level teaspoon salt.

✅ 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) 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.

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

(a) A fracture is a broken or cracked bone in the body. [1 mark] (b) In a simple fracture, the broken bone remains inside unbroken skin; in a compound fracture, the broken bone tears through muscle and pierces outside through the skin. [1 mark] (c) (i) Splints: Immobilize and hold the broken bone in one fixed position to prevent movement. [1 mark] (ii) Arm sling: Supports, immobilizes, and elevates a fractured or injured arm. [1 mark]

💡 Examiner Deduction Warning: In (a), writing 'a broken bone' without mentioning 'cracked' loses precision. In (c)(i), 'keeps bone in one position' is the official mark-earning phrase.