BBISE Matric (SSC) Chemistry (Class IX): syllabus, papers and marking
The 60-mark Class IX theory paper of the new BBISE syllabus, in the 12 + 30 + 18 layout, plus an 8-mark practical-based assessment.
BBISE model papers for SSC-I Examination 2026 onwards (new syllabus), published 30 July 2026 · Annual and Second Annual series · grades A++ to U (IBCC scale)
BBISE Matric Chemistry: where the marks go
The BBISE model paper for Class IX Chemistry sets 60 theory marks: 12 MCQs, ten three-mark short answers and three six-mark questions with an either-or alternative, with an 8-mark practical-based assessment after the written paper. It applies from the 2026 examinations onward under the new syllabus.
The model questions ask for the difference between elements, compounds and mixtures, Bohr’s model, ionic and covalent bonds, trends across periods and the harm done by air pollutants. Marks go on precise comparisons and labelled diagrams. Our papers follow the published structure.
Paper structure and what we mark
| Paper | Time | Marks | Weight | Questions |
|---|---|---|---|---|
| Class IX · Part I — Multiple Choice (Class IX) | 2 h 40 min (whole paper) | 12 | 17.6% | 12 MCQs, 1 mark each; no cutting or erasing allowed |
| Class IX · Part II — Short Answers (Class IX) | — | 30 | 44.1% | Any 10 short questions, 3 marks each |
| Class IX · Part III — Detailed Answers (Class IX) | — | 18 | 26.5% | Three questions of 6 marks, each with an either-or alternative |
| Class IX · PBA — Practical Based Assessment (Class IX) | 20 min | 8 | 11.8% | Any 2 of 3 practical-based questions (2 × 3 marks) plus 2 marks on a favourite practical |
Syllabus outline
- Topics tested in the 2026 model paper (the board has not posted a chapter list):
- Elements, compounds and mixtures
- Atomic structure and Bohr’s model
- Ionic and covalent bonding
- Periodic trends: atomic radius and ionisation energy
- Acids and bases (Arrhenius concept)
- Air pollutants and their effects
How each paper is marked here
- The twelve MCQs are scored automatically against the key.
- Short and detailed answers are marked on the key idea, the comparison and the reason.
- The practical-based assessment is separate.
Where BBISE Matric Chemistry candidates lose marks
- Equation not balanced, or state symbols missing — A correct reaction with the wrong coefficients loses the mark; balance first, then add (s), (l), (g) or (aq) where the question asks for them.
- Mole calculation with the wrong molar mass — Stoichiometry answers fail at the first step when the molar mass is added up wrongly; the rest of the working then cannot earn its marks.
- Definition that names the example, not the idea — Terms such as electronegativity, ionisation energy, equilibrium constant or isotope need the property itself; an example alone is not enough.
- Organic reactions with the wrong conditions — Naming the product but leaving out the reagent, catalyst or temperature (for example for dehydration or hydrogenation) is a standard half-mark loss.
- Trends stated without the reason — Periodic-table questions ask for the trend and the reason (shielding, nuclear charge, size); the trend alone earns half.
Sample papers, mark schemes and marked reports for BBISE Matric Chemistry
See a real handwritten script marked by eight examiners at admitportfolio.com/examiners.
Questions teachers ask
- Why is there only Class IX?
- BBISE’s 2026 model papers are published for Class IX (SSC-I) only; a Class X layout has not been verified.
- Is the either-or choice real?
- Yes. Each six-mark question offers an alternative, so a paper contains six detailed questions and three are answered.
- Is this official BBISE marking?
- No. Balochistan Board of Intermediate and Secondary Education, Quetta marks the real exam. This is examiner-style marking of mocks and homework for BBISE Matric Chemistry. Only you see the marking, and you decide what reaches the student.
- Do you reproduce past-paper questions?
- No. Every Class IX paper here is original and written to the bbise model papers for ssc-i examination 2026 onwards (new syllabus), published 30 july 2026, in the same structure as the real papers shown above.
- Which papers are marked?
- None yet are marked question by question; Class IX · Part I are scored instantly. Practical exams sat at the centre are not marked here.
- How is the next paper chosen?
- From the marks a student lost: the concepts behind them are ranked by marks dropped, and the new paper weights those topics. It is the same syllabus and structure, with new questions.
- When are the exams?
- Annual and Second Annual series. Grades A++ to U (IBCC scale).