Official PCT Exam (Physics - Chemistry - Technology) — BEPC Session 2022

This document presents the official Physics - Chemistry - Technology (PCT) exam from the 2022 session of the Brevet d'Études du Premier Cycle (BEPC). Designed for ninth-grade students preparing for the exam, this paper covers a broad range of fundamental and applied concepts, accompanied by a complete answer key.

Exam Structure

The exam is divided into three progressive sections:

• Essential Knowledge Assessment: this section verifies mastery of core concepts through questions on chemical formulas (CO₂, H₃O⁺), color indicators, petroleum refining, electrical energy production, the electrical power formula (P = U × I), and the role of the spark plug in an internal combustion engine. These questions span the entire PCT curriculum and assess the strength of theoretical knowledge.

• Applications Assessment: this second section offers varied practical exercises. Students must solve problems involving the dissolution of NaCl with concentration calculations and pH measurement, perform a test on polyethylene (PE) to identify a plastic, analyze a pulley-belt system with transmission ratio, draw a standardized electrical installation diagram, and study the operation of a 4-stroke engine by identifying its phases.

• Competency Assessment: the most demanding section focuses on the study of lifting devices. Students must analyze and compare three mechanical devices: a fixed pulley, a 4-strand block and tackle, and a winch, all used to lift a 150 kg load. Calculations cover the required driving force, mechanical efficiency, and the advantage of each system.

Complete Answer Key Included

The document includes a detailed and structured answer key for each exercise. Answers are accompanied by clear justifications and step-by-step calculations, providing students with a reliable self-correction guide. This answer key is a major asset for understanding examiners' expectations and the scientific rigor required at the BEPC.

Target Audience

This exam is primarily intended for BEPC 2022 candidates and those of subsequent sessions, PCT teachers wishing to expand their collection of exam papers, and students studying independently. The diversity of topics covered — chemistry, electricity, mechanics, technology — makes it an excellent cross-curricular revision tool covering the entire official syllabus.