Alerts and Updates for BPSC TRE Higher Secondary Chemistry

The Chemistry paper for classes 11-12 at a glance

Chemistry itself is only 80 of the 150 questions in the main paper. Part I, the language section, carries 30 questions that do not add to merit but must clear 30 per cent, and the 40-question General Studies block does count. So a Chemistry specialist who scores heavily in Part III can still be overtaken by someone weaker in Chemistry but competent in Bihar-flavoured general awareness. Career Power, Adda247 and BiharHelp all report the same 30-40-80 split and the 2 hour 30 minute duration. Read the structure below as the pattern for the written examination, not as a settled number of stages. BPSC's calendar of 14 August 2026 places TRE 4.0 under two-phase PT plus Mains exams; the Chief Minister announced a single-phase exam on 27 August 2026; and BPSC has published no corrigendum resolving the two as of 22 September 2026. The question paper described here is the one candidates must prepare for either way, because a single-phase exam would use it and a two-phase exam would use it as the main paper.

Dates and windows

This calendar is common to every subject in BPSC TRE 4 — Chemistry has no separate notification, no separate application window and no separate examination date. The December-January window and the mid-October confirmation are Adda247's expectation, not a BPSC announcement; Physics Wallah still carries the superseded 1 to 30 September window, which is one reason to check the commission's site rather than any aggregator.

What this means for your preparation

The commonest mistake among Chemistry candidates is reading 3,695 posts as an easy field. It is the largest higher secondary subject in the advertisement, which means it also draws by far the largest applicant pool from Bihar's very deep M.Sc. Chemistry base. The second mistake is treating the 80-question Chemistry block as the whole paper when 40 General Studies questions carry merit weight and the language section can disqualify outright.

Read the 3,695 figure with care

Chemistry at 3,695 posts is the single biggest higher secondary subject in TRE 4, ahead of Physics at 1,758 and English at about 1,321, as Physics Wallah's breakdown shows. Career Power's page reports 3,811 for the same advertisement, so the two published figures differ by over a hundred posts; the annexure to Advertisement No. 14/2026 is the only thing that settles it. Either way Chemistry is about a quarter of the 16,101 higher secondary posts. Large subject means large intake but also the largest competing cohort, and the district-wise split matters more than the state total, because allocation in earlier TRE rounds ran district by district and a popular district can close well above the subject cut-off.

Where the Chemistry cut-off has sat

Career Power's compilation of previous-round cut-offs puts the class 11-12 Chemistry unreserved mark at 41, with 39 for unreserved women, and leaves most reserved categories blank. Against the same compilation, Economics at that level closed near 73 and Computer Science near 63. A Chemistry mark in the low forties out of 150 is strikingly low next to those, which is consistent with a very large intake absorbing most of the qualified field rather than with an easy paper. These are aggregator-compiled numbers from an earlier TRE round, not BPSC's own subject-wise cut-off PDF, and a subject whose vacancy count changes between rounds will not repeat its cut-off.

Prepare the +2 syllabus, answer at PG depth

BPSC has not published a topic-wise Chemistry syllabus for TRE 4. BiharHelp reports the notification as saying subject papers draw on SCERT and NCERT content, while eligibility requires a master's degree in Chemistry or Biochemistry with B.Ed and Bihar STET Paper-II. The practical reading is that the class 11 and 12 NCERT Chemistry books define the topic list — physical, inorganic and organic in roughly equal measure, with coordination compounds, chemical kinetics, electrochemistry, thermodynamics, the p-block and named organic mechanisms recurring heavily — but that questions are set to separate postgraduates, so a candidate who can only recall the textbook statement without the underlying reasoning will lose the discriminating third of the paper.

Negative marking and Chemistry numericals

Both stages deduct 0.33 marks for a wrong answer, per Adda247's account of the selection process; Physics Wallah's page says 0.25, which is the one substantive disagreement among the sources on pattern. At either rate, Chemistry is the subject where the penalty bites hardest, because mole-concept, equilibrium, kinetics and electrochemistry items look solvable and consume three or four minutes each before yielding a wrong sign or a misread unit. With 150 questions in 150 minutes in the main paper the average is one minute per question, so a disciplined rule — attempt a numerical only if the route is visible within about twenty seconds — protects both the clock and the score.

Clear the gate before optimising the subject

BiharHelp reports minimum qualifying marks of 40 per cent for general candidates, 36.5 for BC, 34 for EBC and 32 for SC, ST, women and persons with benchmark disabilities, alongside a separate 30 per cent floor in the qualifying language section. Those are gates, not the merit line. A Chemistry candidate who spends every week on the subject and none on Part I is risking elimination on a paper that contributes nothing to rank. The same logic applies to the 40 General Studies questions, which at 40 of the 110 merit-bearing marks are more than a third of what decides the order, and which are cheaper to raise than the last few Chemistry marks.

Common questions

How many Chemistry posts are there in BPSC TRE 4 for classes 11-12?

Physics Wallah, Testbook and Notifyhere all report 3,695 Chemistry posts at the higher secondary level, the largest of any subject in the 16,101-post class 11-12 pool. Career Power reports 3,811 for the same advertisement. The two figures cannot both be right, so the vacancy annexure attached to Advertisement No. 14/2026 on the BPSC site is the only reliable source. Category-wise splits reported by Testbook include roughly 800 unreserved, 361 SC and 183 EWS within its 3,695 total.

What is the exam pattern for the BPSC TRE Higher Secondary Chemistry paper?

The main paper has 150 objective questions for 150 marks in 2 hours 30 minutes. Chemistry is Part III with 80 questions and 80 marks. Part I is a 30-question language section that only has to be passed at 30 per cent and does not count toward merit; Part II is 40 questions of General Studies that does count. A 150-question preliminary of 2 hours precedes it. One third of a mark is deducted for each wrong answer, as reported by Adda247.

Is the BPSC TRE Chemistry syllabus at class 11-12 level or postgraduate level?

BPSC has not released a separate topic-wise Chemistry syllabus for TRE 4. BiharHelp reports the notification as stating that subject papers follow SCERT and NCERT content, which points at the class 11 and 12 books. Eligibility, however, requires a master's degree in Chemistry or Biochemistry. The workable reading is that the topic list is senior-secondary while the difficulty is pitched to distinguish postgraduates, so physical, organic and inorganic chemistry should be revised from the NCERT spine with graduate-level reasoning behind each result.

What was the Chemistry cut-off in the previous BPSC TRE for class 11-12?

Career Power's cut-off compilation lists a class 11-12 Chemistry unreserved cut-off of 41 and 39 for unreserved women from an earlier TRE round, with most reserved-category cells unpopulated. That sits far below the Economics figure of about 73 and the Computer Science figure of about 63 on the same page, which is consistent with Chemistry's very large intake. These are compiled by a coaching portal rather than taken from BPSC's own subject-wise cut-off PDF, and cut-offs move with vacancy counts, so they indicate a rough level and nothing more.

Do I need B.Ed and STET to apply for BPSC TRE Higher Secondary Chemistry?

Yes. Adda247's eligibility summary for classes 11-12 requires a postgraduate degree in the subject, reported elsewhere as 50 per cent, together with B.Ed or a recognised integrated teacher-education programme, and a qualified Bihar STET Paper-II in the relevant subject. For Chemistry the accepted postgraduate disciplines are reported as Chemistry or Biochemistry. Age limits run from 21 to 37 for general male candidates, 40 for general women and BC or EBC candidates, and 42 for SC, ST and transgender candidates.

When is the BPSC TRE 4 Chemistry exam and is it separate from other subjects?

It is not separate. Every subject in TRE 4 shares one notification, one application window and one examination date; only the Part III question paper differs. Applications were reported to open on 21 September 2026 after the original 1 September start was postponed, and the closing date was not confirmed as of 22 September 2026. Adda247 expects the examination in December 2026 or January 2027 with the schedule notified around mid-October, but BPSC had announced no date.