FBISE HSSC (Intermediate) Chemistry (XI-XII): syllabus, papers and marking

FBISE HSSC-I Chemistry on the 50% MCQ pattern, with equations, calculations and organic structures marked separately in the descriptive section.

National Curriculum 2022-23, Inclusive Scheme of Studies 2024 (1200 marks); 50% MCQ and 50% descriptive pattern from Second Annual 2026 · First Annual and Second Annual series · grades A++ to U (IBCC scale)

FBISE HSSC Chemistry: where the marks go

FBISE Chemistry at HSSC is examined against the Student Learning Outcomes (SLOs) of the National Curriculum 2022-23, not against a textbook. Class XI is now a 100-mark paper: an 80-question MCQ section worth 40 marks (56 straight and 24 built on a situation), a 40-mark descriptive section of seven 4-mark short answers and two 6-mark extended answers with internal choice, and 20 marks of practical-based assessment. Class XII keeps the earlier 17-MCQ, 63-mark descriptive pattern until the 50% pattern reaches it. Marks are won on balanced equations, mole-based working and stating the reason behind a trend or property, not on naming facts.

AdmitPortfolio builds Chemistry papers to the FBISE assessment framework and table of specifications, so the MCQ and descriptive proportions, the 0.5-mark MCQ weighting and the SLO domains follow the board's own model paper. MCQ sections score automatically; descriptive answers are marked question by question as each rubric is released, and every lost mark is traced to the SLO behind it.

How we mark a real script

Paper structure and what we mark

PaperTimeMarksWeightQuestions
Class XI: Section A — Multiple Choice1 h 40 min as printed4040%80 MCQs at half a mark each: 56 straight and 24 built on a situation
Class XI: Sections B and C — Short and Extended Response1 h 20 min as printed4040%Section B: seven short answers of 4 marks. Section C: two extended answers of 6 marks. Internal choice in every question
Class XI: Practical — Practical-Based AssessmentSeparate2020%Practical-based assessment (PBA)
Class XII: Section A — Multiple Choice25 min1717%17 MCQs at one mark each (2024 model-paper pattern)
Class XII: Sections B and C — Short and Extended Response2 h 35 min6363%Section B 39 marks, Section C 24 marks (2024 model-paper pattern)
Class XII: Practical — Practical-Based AssessmentSeparate2020%Practical-based assessment (PBA)

Syllabus outline

  1. History of chemistry
  2. Atomic structure
  3. Chemical bonding
  4. States and phases of matter
  5. Stoichiometry
  6. Energetics
  7. Chemical kinetics
  8. Chemical equilibrium
  9. Acids, bases and salts
  10. Electrochemistry
  11. Periodic table and Group 17
  12. Nitrogen and sulphur
  13. Environmental chemistry: air and water
  14. Organic chemistry: hydrocarbons, halogenoalkanes, hydroxy compounds, amines and organic synthesis

How each paper is marked here

Where FBISE HSSC Chemistry candidates lose marks

  1. Unbalanced equations and missing state symbols — Right formulae with wrong coefficients lose the mark, and every stoichiometry step that follows inherits the error.
  2. Mole calculations that skip the mole step — Going straight from mass to mass hides the method. Show n = m/M and the ratio taken from the equation.
  3. Trends stated with no reason — Periodic and bonding trends need the cause, such as nuclear charge, shielding or intermolecular forces, not just that a value increases down the group.
  4. Organic names and structures written loosely — Wrong chain length, missing locants or carbons drawn with the wrong number of bonds are marked wrong even inside an otherwise sound answer.
  5. Scenario-based MCQs answered from memory — Twenty of the sixty Section A items sit on a situation, table or diagram. Answering from recalled facts picks the distractor written for it.

Sample papers, mark schemes and marked reports for FBISE HSSC Chemistry

See a real handwritten script marked by eight examiners at admitportfolio.com/examiners.

Questions teachers ask

Which printed times apply to Class XI?
The model paper prints 1 hour 40 minutes against the MCQ section and 1 hour 20 minutes against the descriptive section. We use the board’s printed times and flag them for confirmation each session.
Are organic structures and equations marked separately?
Once the descriptive rubric is released, a correct structure or balanced equation is credited on its own line, so one slip does not remove the whole answer.
Which grading scale applies?
The IBCC 10-point scale, A++ to U with 40% as the pass line, applies at HSSC-I from the First Annual 2026 and at HSSC-II from the First Annual 2027.
Is this official FBISE marking?
No. Federal Board of Intermediate and Secondary Education marks the real exam. This is examiner-style marking of mocks and homework for FBISE HSSC Chemistry. Only you see the marking, and you decide what reaches the student.
Do you reproduce past-paper questions?
No. Every XI-XII paper here is original and written to the national curriculum 2022-23, inclusive scheme of studies 2024 (1200 marks); 50% mcq and 50% descriptive pattern from second annual 2026, in the same structure as the real papers shown above.
Which papers are marked?
None yet are marked question by question; Class XI: Section A, Class XII: Section A 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?
First Annual and Second Annual series. Grades A++ to U (IBCC scale).

Other FBISE HSSC (Intermediate) courses

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