High-Yield & Frequently Examined Questions
Questions curated and analyzed from official NEB/CDC past papers, recurring blueprint patterns, and full-mark rubrics.
Active Scope:All GradesScience and Technology
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Showing 2 high-yield questions
Compulsory 6-Mark Question in BLE Municipality Board ExaminationClass 8 • Science and Technology
Rating: 5 / 5
Defensible Pedagogical Basis:
Grade 8 BLE Specification Grid: Classification of Levers, Mechanical Advantage, and Efficiency.
Approach Summary: Define simple machine. Explain position of F, L, E in 1st, 2nd, and 3rd class levers with examples. State why 2nd class levers always have MA > 1.
Mandatory in BLE Municipality Board Exams 2078, 2079, 2080Class 8 • Science and Technology
Rating: 5 / 5
Defensible Pedagogical Basis:
BLE core competency on mechanics: Definitions, proof of efficiency formula, and real-world application of simple machines.
Approach Summary: Define MA = Load/Effort, VR = Effort dist/Load dist, Efficiency = Output Work/Input Work * 100%. Substitute definitions to prove η = (MA/VR) * 100%. Friction and machine self-weight ensure Output Work < Input Work.