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Free Practice Questions for INECE 12ª Classe Ciências

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Key Facts: INECE 12ª Classe Ciências Exam

40 MCQs

Typical questions per subject paper

INECE exam papers

90–120 min

Time per paper

INECE 2026 external exam timetable

10 / 20

Minimum final mark per subject

Diploma Ministerial n.º 7/2019

250 + 200 MT

External registration + per-subject fee

INECE external candidates edital 2026

14–18 Dec 2026

External candidate exams

INECE external candidates edital 2026

The 12ª classe final exams are national subject papers set by INECE at the end of general secondary school in Mozambique. Science pupils sit papers such as Matemática, Física, Química and Biologia, usually 40 multiple-choice questions in 90–120 minutes. This independent English bank follows the 2026 matrices.

Sample INECE 12ª Classe Ciências Practice Questions

Try these sample questions to review concepts for the INECE 12ª Classe Ciências exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 80+ question experience with AI tutoring.

1Solve the modulus equation |2x − 3| = 7 in the set of real numbers.
A.x = 5 or x = −2
B.x = 5 only
C.x = 2 or x = −5
D.x = −2 only
Explanation: |A| = 7 means A = 7 or A = −7. So 2x − 3 = 7 gives x = 5, and 2x − 3 = −7 gives x = −2. Both values satisfy the original equation.
2Which interval is the solution set of the inequality |x − 1| < 3?
A.]−∞, −2[ ∪ ]4, +∞[
B.]−2, 4[
C.]−4, 2[
D.[−2, 4]
Explanation: |x − 1| < 3 means −3 < x − 1 < 3. Adding 1 to each part gives −2 < x < 4, so the solution is the open interval ]−2, 4[. Geometrically, these are the points whose distance to 1 is less than 3.
3In how many ways can a committee of 4 students be chosen from a science club of 9 members?
A.3024
B.24
C.126
D.84
Explanation: Order does not matter, so use combinations: C(9, 4) = 9! / (4! × 5!) = (9 × 8 × 7 × 6) / (4 × 3 × 2 × 1) = 3024 / 24 = 126.
4A school must choose a president, a secretary and a treasurer (three different posts) from 7 candidates. How many different choices are possible?
A.35
B.343
C.21
D.210
Explanation: The posts are different, so order matters and repetition is not allowed: arrangements without repetition A(7, 3) = 7 × 6 × 5 = 210.
5A bag contains 6 red marbles and 4 blue marbles. Two marbles are drawn one after the other without replacement. What is the probability that both are red?
A.9/25
B.1/3
C.2/5
D.3/10
Explanation: P(first red) = 6/10. Without replacement, 9 marbles remain, 5 of them red: P(second red | first red) = 5/9. P(both red) = 6/10 × 5/9 = 30/90 = 1/3.
6What is the value of the binomial coefficient C(8, 3)?
A.56
B.336
C.24
D.70
Explanation: C(8, 3) = 8! / (3! × 5!) = (8 × 7 × 6) / (3 × 2 × 1) = 336 / 6 = 56.
7Using Newton's binomial theorem, what is the coefficient of x³ in the expansion of (x + 2)⁵?
A.10
B.80
C.20
D.40
Explanation: The general term is C(5, k) · x^(5−k) · 2^k. For x³ we need k = 2: C(5, 2) · x³ · 2² = 10 × 4 × x³ = 40x³.
8In an arithmetic progression (PA), a₃ = 11 and a₇ = 27. What are the first term a₁ and the common difference d?
A.a₁ = 4 and d = 3
B.a₁ = 1 and d = 5
C.a₁ = 3 and d = 4
D.a₁ = 2 and d = 4
Explanation: a₇ − a₃ = 4d, so 27 − 11 = 16 = 4d and d = 4. Then a₃ = a₁ + 2d gives 11 = a₁ + 8, so a₁ = 3.
9An arithmetic progression has a₁ = 5 and a₂₀ = 62. What is the sum of its first 20 terms?
A.1340
B.620
C.670
D.580
Explanation: Sₙ = n(a₁ + aₙ)/2, so S₂₀ = 20 × (5 + 62)/2 = 10 × 67 = 670.
10What is the sum of the infinite geometric progression 6 + 2 + 2/3 + 2/9 + …?
A.4.5
B.12
C.The sum is infinite
D.9
Explanation: a₁ = 6 and the ratio q = 2/6 = 1/3. Since |q| < 1, the sum exists: S = a₁/(1 − q) = 6/(2/3) = 9.

About the INECE 12ª Classe Ciências Exam

Independent 12ª classe science practice by OpenExamPrep for Mozambique's end-of-secondary exams. Questions follow INECE's 2026 exam matrices for Mathematics, Physics, Chemistry and Biology. The official papers are in Portuguese; this bank is an English-language MCQ study adaptation, not an official translation or a simulation of the exam format.

Exam sponsor: INECE (Ministério da Educação e Cultura). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Separate national subject papers at the end of the 12ª classe. Pupils sit the papers of their section and group, and external candidates choose the subjects they need to complete.

Time Limit

90–120 minutes per paper

Passing Score

Final mark of at least 10 per subject (0–20 scale)

Exam / Certification Fees

External candidates: 250 MT plus 200 MT per subject

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

  • INECE — Instituto Nacional de Exames, Certificação e Equivalências · Source checked 2026-09-30Exam board of the Ministério da Educação e Cultura; publishes the yearly matrizes de objectivos e conteúdos, exam calendars and results.
  • INECE — Portal de Inscrição de Candidatos Externos · Source checked 2026-09-30Pre-registration portal for external 12ª classe candidates; the 2026 edital sets registration from 8 September to 2 October 2026, the fees, eligibility and the 14–18 December 2026 exam dates.
  • INECE — Matrizes de Objectivos e Conteúdos dos Exames da 12ª Classe 2026 · Source checked 2026-09-30Official topic matrices for each 12ª classe subject paper; distributed through schools and education portals.
  • Ministério da Educação e Cultura (MEC) · Source checked 2026-09-30Ministry responsible for the school calendar and the secondary assessment regulation (Diploma Ministerial n.º 7/2019).

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

25% of this bank

Matemática

Absolute value, combinatorics and probability, progressions, limits and continuity, and derivatives.

25% of this bank

Física

Electromagnetic waves, heat and radiation, the photoelectric effect, atomic and nuclear physics, fluids, gases and thermodynamics, and oscillations.

25% of this bank

Química

Kinetics, equilibrium, acids and bases, solubility, electrochemistry and organic chemistry.

25% of this bank

Biologia

Cells and membrane transport, cell division, plant physiology, human physiology and animal comparative physiology.

Preparing for the INECE 12ª Classe Ciências Exam

What You Need to Know

  • Passing score: Final mark of at least 10 per subject (0–20 scale)
  • Assessment: Separate national subject papers at the end of the 12ª classe. Pupils sit the papers of their section and group, and external candidates choose the subjects they need to complete.
  • Time limit: 90–120 minutes per paper
  • Exam / certification fees: External candidates: 250 MT plus 200 MT per subject Official sources

Using Our Practice Resources

  • Work through all 80 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

INECE 12ª Classe Ciências: Suggested Study Strategy

1Work through the INECE 2026 matriz for each of your subjects and tick off every objective.
2Time yourself: about 3 minutes per question in a 120-minute, 40-question paper.
3Practise calculations without skipping units, especially in Física and Química.
4Solve past INECE papers in Portuguese to get used to the official wording.
5Use this English bank to check concepts, then restate each answer in Portuguese.

Frequently Asked Questions

What is the format of the 12ª classe exams?

INECE sets a separate paper for each subject, written in Portuguese. Recent papers usually have 40 multiple-choice questions with four options, marked on an answer sheet. In the 2026 external timetable, Matemática, Física and Química last 120 minutes and Biologia 90 minutes.

How do I pass a 12ª classe subject?

Marks use the 0–20 scale. Under Diploma Ministerial n.º 7/2019, internal pupils need a final subject mark of at least 10 with an exam mark of at least 9. External candidates need at least 10 in each subject examined.

Can I sit the exams as an external candidate?

Yes. External candidates must be 17 or older, have completed the 10ª classe and meet one of the edital's conditions, such as having attended the 11ª classe or having passed at least one 12ª classe subject in an earlier year. They pre-register on externo.inece.co.mz and then register at an exam-centre school (8 September to 2 October 2026), paying 250 MT plus 200 MT per subject. The 2026 external exams run from 14 to 18 December 2026.

Is this an official translation of the exam?

No. This is an independent English-language multiple-choice study adaptation by OpenExamPrep. It is not an official INECE translation or a simulation of the papers, so practise with past Portuguese papers as well.

Which topics does this bank cover?

It follows INECE's 2026 matrices for Matemática, Física, Química and Biologia, with 20 questions per subject. The equal split is our own study allocation, not an official weighting.