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100+ Free LGCSE Physical Science (0181) Practice Questions

Prepare for the Lesotho General Certificate of Secondary Education — Physical Science (Syllabus 0181) exam with instant access — no signup required.

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2026 Statistics

Key Facts: LGCSE Physical Science (0181) Exam

0181

Official LGCSE syllabus code

ECoL / NCDC Physical Science syllabus

40 MCQs

Official Paper 1 item count (20 Chem + 20 Phys)

LGCSE Physical Science scheme of assessment

45 min

Paper 1 duration

LGCSE Physical Science scheme of assessment

30% / 50% / 20%

Paper 1 / Paper 2 or 3 / Paper 4 weightings

LGCSE Physical Science scheme of assessment

A*–G

LGCSE letter grade scale (U ungraded)

Examinations Council of Lesotho

M910 + M150

Private 1-subject fee + practical fee (2026 table)

ECoL examinations fees

Oct/Nov

Main examination series

ECoL LGCSE Physical Science syllabus

ECoL LGCSE Physical Science 0181 assesses Chemistry and Physics through Paper 1 (40 MCQs, 45 min, 30%), Paper 2 Core or Paper 3 Extended theory (80 marks, 1 h 30 min, 50%), and Paper 4 Practical Knowledge (40 marks, 1 h, 20%). Grades are A*–G. The 100 questions here are an English MCQ study adaptation for revision—not the official multi-paper format.

Sample LGCSE Physical Science (0181) Practice Questions

Try these sample questions to test your LGCSE Physical Science (0181) exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1Which substance is a compound?
A.Air
B.Brass
C.Water
D.Graphite
Explanation: Water (H2O) is a compound: two elements chemically combined in a fixed ratio. Air is a mixture of gases, brass is an alloy (mixture of metals), and graphite is a form of the element carbon.
2An atom has 11 protons, 12 neutrons and 11 electrons. What is its mass number?
A.11
B.12
C.22
D.23
Explanation: Mass number equals protons plus neutrons: 11 + 12 = 23. Electrons do not contribute significantly to mass number and are not included in this total.
3Which particle has a relative charge of −1?
A.Proton
B.Neutron
C.Electron
D.Nucleus
Explanation: The electron carries a relative charge of −1. Protons are +1, neutrons are 0, and a nucleus (protons + neutrons) is overall positive.
4Chlorine has atomic number 17. What is the electronic configuration of a chloride ion, Cl−?
A.2,8,7
B.2,8,8
C.2,8,6
D.2,8,18
Explanation: A chlorine atom is 2,8,7. Gaining one electron to form Cl− gives 2,8,8—a full outer shell like argon.
5Elements in the same group of the Periodic Table have the same number of:
A.protons
B.neutrons
C.electron shells
D.outer-shell electrons
Explanation: Group number relates to the number of outer-shell electrons, which determines chemical similarity. Period number relates to the number of electron shells.
6Which statement about Group I alkali metals is correct?
A.They become less reactive down the group.
B.They form acidic oxides.
C.They react with water to form hydrogen gas.
D.They are poor conductors of electricity.
Explanation: Alkali metals react with water to give a metal hydroxide and hydrogen gas. Reactivity increases down the group; oxides are basic; metals conduct electricity.
7Going down Group VII (halogens), which property trend is correct?
A.Melting point decreases.
B.Colour becomes darker and density increases.
C.They become more reactive.
D.They change from solids to gases.
Explanation: Down Group VII, colour deepens (yellow-green Cl2 → dark purple I2) and density/melting points increase as intermolecular forces strengthen. Reactivity decreases down the group.
8Sodium chloride is held together by ionic bonds. Which description is correct?
A.Sharing of electron pairs between sodium and chlorine
B.Electrostatic attraction between Na+ and Cl− ions
C.Delocalised electrons between sodium atoms only
D.Weak forces between NaCl molecules
Explanation: Ionic bonding is the strong electrostatic attraction between oppositely charged ions. Sodium transfers an electron to chlorine, forming Na+ and Cl− in a giant ionic lattice.
9Which substance has a giant covalent structure?
A.Methane, CH4
B.Sodium chloride, NaCl
C.Diamond
D.Copper
Explanation: Diamond is a giant covalent network of carbon atoms, each bonded tetrahedrally to four others. Methane is simple molecular, NaCl is ionic, and copper is metallic.
10Why does graphite conduct electricity?
A.It contains free mobile ions.
B.Each carbon has a delocalised electron that can move between layers.
C.It is a metal with free protons.
D.Weak intermolecular forces allow charge to flow.
Explanation: In graphite, each carbon forms three covalent bonds in layers, leaving one delocalised electron per atom that can carry charge through the structure.

About the LGCSE Physical Science (0181) Exam

LGCSE Physical Science (0181) is Lesotho's senior secondary combined Chemistry and Physics qualification, developed by NCDC with ECoL and based on Cambridge International GCSE Physical Science foundations. Candidates study both Chemistry (atomic structure, reactions, stoichiometry, environment, organic) and Physics (general physics, thermal, waves, electricity, atomic physics) over two years.

Assessment

Paper 1 MCQ 40 items (45 min, 30%); Paper 2 Core or Paper 3 Extended theory 80 marks (1 h 30 min, 50%); Paper 4 Practical Knowledge 40 marks (1 h, 20%)

Time Limit

Paper 1: 45 minutes; Paper 2 or 3: 1 hour 30 minutes; Paper 4: 1 hour

Passing Score

Letter grades A*–G (U = ungraded); Grade C or better is commonly treated as credit-level

Exam Fee

Private candidates: M910 for one LGCSE subject (2026 ECoL table; up to M2730 for 8 subjects). School candidates register through centres. Add M150 practical fee per practical subject when applicable. Confirm on examscouncil.org.ls. (Examinations Council of Lesotho (ECoL))

LGCSE Physical Science (0181) Exam Content Outline

12%

Atomic Structure and the Periodic Table

Distinguish elements, compounds and mixtures; proton, neutron and electron numbers; electron arrangement; groups and periods; alkali metals, halogens and noble gases; transition metals; ionic, metallic and covalent bonding; giant covalent and metallic structures; metal properties, reactivity series and extraction.

14%

Chemical Reactions

Physical versus chemical change; exothermic and endothermic processes; collision theory and factors affecting rate; oxidation and reduction; acid–base properties and pH; oxide classification; salt preparation; qualitative tests for ions and gases; limestone chemistry; electrolysis of molten and aqueous electrolytes.

8%

Stoichiometry

Relative atomic and formula mass; the mole and Avogadro constant context; molar mass; balanced equations; reacting-mass calculations; molar gas volume; limiting reactant ideas at Extended level.

8%

Air, Water and the Environment

Water purification; air composition; sources and effects of common pollutants; oxygen production and uses; nitrogen and fertilisers; carbon dioxide, combustion and the carbon cycle.

8%

Organic Chemistry

Homologous series; alkane properties and combustion; petroleum fractions; cracking; alkene addition reactions; ethanol production and uses; carboxylic acids; addition and condensation polymers.

14%

General Physics

Length and time measurement; speed, velocity and acceleration; mass, weight and density calculations; forces, Hooke's law and moments; energy stores and transfers; work and power; pressure in solids and fluids.

8%

Thermal Physics

Particle model of solids, liquids and gases; thermal expansion; conduction, convection and radiation; temperature measurement; heating and cooling curves.

10%

Waves

Wave speed, frequency and wavelength; transverse and longitudinal waves; reflection and refraction of light; total internal reflection; thin lenses; colour and the electromagnetic spectrum; sound speed, echoes and pitch.

12%

Electricity and Magnetism

Charge and current; potential difference and resistance; Ohm's law; series and parallel networks; electrical energy and power; magnets and magnetic fields; electromagnets and simple electromagnetic devices.

6%

Atomic Physics

Nuclear structure; radioactive decay; properties of α, β and γ radiation; half-life calculations; detection, safety and applications.

How to Pass the LGCSE Physical Science (0181) Exam

What You Need to Know

  • Passing score: Letter grades A*–G (U = ungraded); Grade C or better is commonly treated as credit-level
  • Assessment: Paper 1 MCQ 40 items (45 min, 30%); Paper 2 Core or Paper 3 Extended theory 80 marks (1 h 30 min, 50%); Paper 4 Practical Knowledge 40 marks (1 h, 20%)
  • Time limit: Paper 1: 45 minutes; Paper 2 or 3: 1 hour 30 minutes; Paper 4: 1 hour
  • Exam fee: Private candidates: M910 for one LGCSE subject (2026 ECoL table; up to M2730 for 8 subjects). School candidates register through centres. Add M150 practical fee per practical subject when applicable. Confirm on examscouncil.org.ls.

Keys to Passing

  • Complete 500+ practice questions
  • Score 80%+ consistently before scheduling
  • Focus on highest-weighted sections
  • Use our AI tutor for tough concepts

LGCSE Physical Science (0181) Study Tips from Top Performers

1Practise Paper 1-style MCQs under a 45-minute clock, aiming for roughly one minute per item and balancing Chemistry and Physics halves.
2Memorise key formulae: density = m/V, F = ma (where used), W = mg, p = F/A, V = IR, P = VI, E = VIt, wave speed = fλ, and mole relations (n = m/Mr).
3Drill qualitative analysis tables for cations, anions and gases—these appear in theory and Practical Knowledge (Paper 4).
4When solving circuit and stoichiometry problems, rewrite the given data with units first, then substitute into the formula to avoid power-of-ten errors.
5Link environment and organic topics to local examples (water treatment, combustion products, plastics) while still using correct chemical equations and names.

Frequently Asked Questions

What is LGCSE Physical Science 0181?

Syllabus 0181 is the Examinations Council of Lesotho (ECoL) Lesotho General Certificate of Secondary Education subject that combines Chemistry and Physics for Grades 11–12. It was developed with the National Curriculum Development Centre (NCDC) from Cambridge International GCSE Physical Science foundations.

How is LGCSE Physical Science examined?

All candidates take three papers: Paper 1 (40 multiple-choice items in 45 minutes, 30%—20 Chemistry and 20 Physics from the Core), either Paper 2 (Core theory) or Paper 3 (Extended theory) for 80 marks in 1 hour 30 minutes (50%), and Paper 4 Practical Knowledge for 40 marks in 1 hour (20%). The main series is October/November.

What grades are awarded for LGCSE Physical Science?

ECoL awards letter grades from A* to G, with U for ungraded. There is no single published numeric percentage pass mark. Grade C or better is commonly treated as credit-level performance for progression pathways.

How much does LGCSE Physical Science cost for private candidates?

On the 2026 ECoL fee table, private LGCSE entry starts at M910 for one subject (up to M2730 for eight subjects). Physical Science is a practical subject, so an additional M150 practical fee per practical subject may apply. School candidates register through their centres. Always confirm current fees on examscouncil.org.ls.

Are these official ECoL examination questions?

No. This bank contains original English-language multiple-choice study questions aligned to LGCSE Physical Science 0181 syllabus topics. Official assessment also includes structured theory and a Practical Knowledge paper; these 100 items are a study adaptation, not an official paper simulation.

Should I take Paper 2 or Paper 3?

Paper 2 assesses the Core Curriculum (grades C to G available). Paper 3 assesses the Extended Curriculum (Core plus Supplement) and can award grades A* to G. Centres enter candidates expected to achieve grade C or above for Paper 3; those likely at D or below usually enter Paper 2.