BCS preliminary syllabus and subject-wise marks explained

The BCS preliminary test is a single 200-mark, 200-question MCQ paper sat in two hours, drawn from ten fixed subjects: Bangla, English, Bangladesh affairs, international affairs, geography and environment, general science, computer and IT, mathematical reasoning, mental ability, and ethics and good governance. Each correct answer is worth one mark and each wrong answer costs 0.5 marks under the current pattern. The Bangladesh Public Service Commission (BPSC) publishes the exact syllabus in each cycle’s circular, and the split below reflects how these subjects have typically been weighted, but the authoritative figure for your cycle is always the current notice on bpsc.gov.bd.

What subjects are actually on the BCS preliminary paper?

The ten fixed subjects on the BCS preliminary paper are Bangla, English, Bangladesh affairs, international affairs, geography and environment and disaster management, general science, computer and information technology, mathematical reasoning, mental ability, and ethics, values and good governance. This structure has stayed consistent across recent cycles even as the weight within a couple of these sections has been adjusted, so learning the ten headings first, before worrying about exact marks, is the more durable starting point.

How are the 200 marks split across sections?

Bangla and English together carry the largest combined share of the paper, followed by Bangladesh affairs, with the remaining seven subjects splitting a smaller pool of marks each. This lopsided distribution is deliberate: BPSC is testing a general administrative aptitude, not subject mastery, so language and national affairs, the two areas every civil servant uses daily regardless of cadre, get the most weight. A candidate who ignores geography or ethics entirely because the sections look small is still leaving five to fifteen marks on the table, which matters in a cutoff-driven exam where the margin between clearing and not clearing preliminary is often a handful of questions.

Which sections should I prioritise if I have limited time?

Prioritise Bangla, English and Bangladesh affairs first, because together they carry the heaviest combined weight and also feed directly into the written stage later, so time spent here compounds. After that, mathematical reasoning and mental ability reward practice more predictably than pure memory subjects, because question patterns repeat across cycles even when specific numbers change. General science, computer and IT, geography, international affairs and ethics are smaller sections individually, but skipping any one of them outright is a bad trade against their marginal cost, since a week of light revision across all five usually yields more net marks than the same week spent going deeper into a subject you have already covered adequately.

Does the syllabus change between BCS cycles?

Yes, the syllabus and its internal weighting have changed between recent BCS cycles, most visibly around age eligibility and viva marks rather than the ten preliminary headings themselves, which is exactly why relying on a guidebook written for an earlier BCS without cross-checking the current circular is risky. The BCS exam page on this site tracks dated facts against a source and a last-verified date for that reason, rather than stating a fixed syllabus as permanent.

How should negative marking change my attempt strategy on this paper?

Negative marking on the BCS preliminary means an unconfident guess has a real, calculable cost, so it changes which questions are worth attempting at all. With 0.5 marks deducted per wrong answer, a question you can only narrow to a coin-flip guess has a negative expected value if you are wrong roughly half the time or more. Run your own recent mock scores through the negative marking calculator to see your actual net score under this penalty rather than your raw correct count; most candidates are surprised by how much a handful of careless guesses is costing them once the penalty is applied honestly.

How does the syllabus connect to preparation and to the written stage?

The preliminary syllabus is not a separate task from written preparation; Bangla, English and Bangladesh affairs recur, at greater depth, in the written papers, so the two stages should be studied as one continuous track rather than two unrelated exams. For a broader first-90-days plan across both stages, see the BCS exam preparation guide. Once you clear preliminary, the BCS written exam subjects guide covers what each descriptive paper expects in more depth, and the BCS age limit and quota guide is worth reading early if you are unsure whether you are even eligible for the cycle you are targeting.

Frequently asked questions

How many questions are on the BCS preliminary paper? The paper carries 200 questions worth 200 marks, sat in a two-hour window, according to the BPSC circular pattern for recent BCS cycles.

Is there negative marking on the BCS preliminary test? Yes, 0.5 marks are deducted for each wrong answer under the current pattern published by BPSC.

Which subject carries the most marks in preliminary? Bangla and English together carry the largest combined share of the 200 marks, followed by Bangladesh affairs, based on the pattern published in recent BPSC circulars.

Can I skip a small section like ethics or geography entirely? Skipping any section outright is a poor trade against its marginal marks, since even five to ten marks can decide a preliminary cutoff, so light coverage across every section beats deep coverage of only a few.

Where can I confirm the exact syllabus for my BCS cycle? Always confirm against the current circular on bpsc.gov.bd rather than a book or website written for an earlier cycle, since BPSC has changed syllabus and eligibility details between recent cycles.