Bihar Police Constable Operator Syllabus, Exam Pattern
106 topics across 3 subjects. Every question carries a written explanation.
Constable (Operator), or Sipahi (Prachalak), is a technical constable post in the Bihar Police Radio Organisation, part of the Bihar Police Telecommunication (Wireless) and Technical Non-Gazetted Cadre. Because it's a wireless post, you need Intermediate science to apply, and three quarters of the written paper is physics, chemistry and maths.
| Conducted by | Central Selection Board of Constable (CSBC), Bihar |
| Advertisement | Advertisement No. 02/2026 |
| Vacancies | 993 |
| Pay | Level 3, ₹21,700 to ₹69,100 |
| Service rules | Bihar Police Telecommunication (Wireless) and Technical Non-Gazetted Cadre Rules, 2021 (Home Department notification 3049 of 7 April 2021) |
| Appointing authority | Superintendent of Police (Wireless) |
| Applications | 1 to 31 March 2026, online |
Vacancies by category
| Category | Posts |
|---|---|
| Unreserved (UR) | 408 |
| Economically Weaker Section (EWS) | 99 |
| Scheduled Caste (SC) | 157 |
| Scheduled Tribe (ST) | 10 |
| Extremely Backward Class (EBC) | 175 |
| Backward Class (BC), including 2 transgender posts | 113 |
| Women of the Backward Classes (BCW) | the balance |
| Total | 993 |
| Of which, for women who are original residents of Bihar | 338 |
| Of which, for dependants of freedom fighters | 20 |
The horizontal figures sit inside the category totals. Posts can be added before the written exam, and the number can go up or down.
Last checked against the official notification on .
Bihar Police Constable Operator Details
Exam Pattern
| Papers | One, OMR based |
| Questions and marks | 100 questions, 100 marks |
| Time | Two hours |
| Marking | One mark per correct answer. The advertisement prescribes no deduction for a wrong answer |
| Standard | Intermediate (10+2) of the Bihar School Examination Board |
| Part | Questions |
|---|---|
| General Knowledge and current affairs | 25 |
| Physics | 25 |
| Chemistry | 25 |
| Mathematics | 25 |
| Total | 100 |
- Score under 30 per cent and you're out before the physical test.
- Five times the vacancies, category-wise, go to the PET. Everyone on the category cut-off mark goes through, and the Board can lower the ratio if there aren't enough eligible candidates.
- If the paper runs in more than one shift, merit is on normalised marks by the Equi-Percentile Method.
- The OMR sheet has a carbonless duplicate, and the Board keeps a copy for one year after the final list.
Syllabus
The advertisement gives subjects and level but no topic list. It sends you to the Bihar School Examination Board website for the detail, so the BSEB Class 11 and 12 Physics, Chemistry and Mathematics syllabus is the syllabus for 75 of the 100 questions.
The other 25 are General Knowledge and current affairs, with no sub-topics named.
This isn't the paper the Board sets for its general or Special Branch constables, which test reasoning, English, Hindi and general studies. Check that your material matches this advertisement.
Eligibility Criteria
Indian citizens only.
Education
Intermediate (Science), 10+2 or equivalent, with Physics, Chemistry and Mathematics, at least 50 per cent marks (45 per cent for SC and ST), held by 31 March 2026.
Physical standards
| Category | Height | Chest, unexpanded | Chest, expanded |
|---|---|---|---|
| Men, UR and BC | 165 cm | 81 cm | 86 cm |
| Men, EBC | 160 cm | 81 cm | 86 cm |
| Men, SC and ST | 160 cm | 79 cm | 84 cm |
| Women, all categories | 155 cm | n/a | n/a |
Men need at least 5 cm chest expansion. Women need at least 48 kg. Transgender candidates follow the women's standards.
Age
| Category | Minimum | Maximum |
|---|---|---|
| Unreserved | 18 | 25 |
| BC and EBC men | 18 | 27 |
| BC and EBC women | 18 | 28 |
| SC and ST, all, and transgender | 18 | 30 |
Age comes from your matriculation certificate. Minimum age is counted on 1 August 2026, but maximum age on 1 August 2021. That isn't a typo: Home Department letter 1275 of 28 January 2026 gave these 993 posts a five-year upper age relaxation, applied by moving the date back. If you look over age, check against 2021.
Reservation
Vertical reservation under the Bihar Reservation of Vacancies Act, 1991 (amended by Act 17 of 2002): SC 16, ST 1, EBC 18, BC 12 and BC women 3 per cent, 50 per cent in all, with EWS alongside.
Women get 35 per cent horizontal reservation, introduced by the General Administration Department in January and February 2016 (resolutions of 20 January and 15 February 2016). Since resolution 12575 of 9 July 2025, circulated by CSBC on 2 September 2025, it's only for women who are original residents of Bihar.
Dependants of freedom fighters need a District Officer's certificate naming them as grandson, granddaughter or daughter's child; a successor certificate isn't accepted. Transgender candidates need the Form 3 or Form 4 certificate under the Transgender Persons (Protection of Rights) Rules, 2020.
Selection Process
- Written exam, 100 marks. The merit list is made on this alone.
- Physical Efficiency Test: race, high jump, shot put. Qualifying, no marks.
- Document verification, usually on the PET day.
- Medical and character verification before appointment.
The PET
| Event | Men | Women |
|---|---|---|
| Race | 1 mile (1.6 km) in 6 minutes | 1 km in 6 minutes |
| High jump | 3 feet 6 inches | 2 feet 6 inches |
| Shot put | 16 pounds, 15 feet | 12 pounds, 8 feet |
- Three attempts at the jump and the shot put. Each event must be passed separately; fail one and you don't get to try the rest.
- No relaxation in any standard. Transgender candidates follow the women's norms.
- Women must declare they're not pregnant; pregnant women can't take part.
- Height and chest are measured too. If you dispute only those, object the same day and the Board decides it that day.
Document verification
Attend in person with every original and a self-attested photocopy. There's no second chance and no extension.
Merit and ties
The Board ranks category-wise on written marks and recommends to the Director General of Police. Ties go to the older candidate, then the higher qualification, then marks in the qualifying exam, then alphabetical order of the name on the Class 10 certificate.
If selected candidates don't join, the Board can issue supplementary lists for six months from the merit list. In past cycles it has also built waiting lists from candidates below the line.
Salary
Pay Level 3, ₹21,700 to ₹69,100. The advertisement gives nothing more; allowances follow Bihar Government rules for the post and place of posting.
It's a technical cadre with its own rules, and you're appointed by the Superintendent of Police (Wireless), not a district SP.
Medical and character checks
Under the Bihar Police Manual, 1978: medical exam on Form 103, character and antecedent check on Form 101. Rule 658(iv) requires you to be free of any disease, deformity or weakness that makes you unfit for duty. They check vision, colour blindness, hearing, stammering, flat foot and knock knee. Stammering or lisping makes you ineligible. An adverse report or hiding facts ends your candidature.
How to Apply
Online only, through links on csbc.bihar.gov.in, 1 to 31 March 2026. The fee is ₹100 for every category, plus bank charges. There's no concession.
If you get stuck, you can register again with a different mobile or email and pay again, but the first fee isn't refunded.
Have these ready, valid on the closing date
- Photo ID (Aadhaar, driving licence, voter ID or similar).
- Matriculation certificate and mark sheet (your date of birth comes from it).
- Intermediate certificate and mark sheet.
- SC and ST: caste and permanent residence certificates.
- BC and EBC: caste, residence and Non-Creamy Layer certificates. If the NCL is more than a year old, add a Form xviiiB declaration.
- EWS: certificate for financial year 2024-2025 in Annexure-I, plus residence certificate.
- Freedom fighter dependants and transgender candidates: the certificates in the eligibility section.
Anyone debarred for misconduct by BPSC, CSBC or another commission can't apply.
After applications close, the Board publishes a list of invalid applications with reasons, and correction windows for photo, signature or gender errors.
Participating Institutes
CSBC, under the Home Department (Police Branch) at 05 Harding Road, Patna 800001, advertises, examines and recommends. It also recruits constables for Bihar Fire Services, Home (Prisons), Bihar Home Guards, Prohibition, Forest and Transport.
- Bihar Police Headquarters sends the requisition.
- Home Department sets the service rules and gave the age relaxation.
- General Administration Department sets the fee and reservation policy.
- Director General of Police receives recommendations and asks for supplementary lists.
- Superintendent of Police (Wireless) appoints.
- Bihar School Examination Board sets the standard for the paper.
On 12 May 2026 the Board announced a newly developed website; it links to it from the original.
Exam Centres
The written exam is held at centres across Bihar. The Board publishes a centre list by roll number shortly before the paper, and issues corrections and venue changes by notice. It may run in more than one sitting.
The PET is at grounds notified with the PET admit card. Bring every original certificate, since document verification usually happens the same day.
Important Dates
| Event | Date |
|---|---|
| Applications | 1 to 31 March 2026 |
| Qualification held by | 31 March 2026 |
| Minimum age reckoned on | 1 August 2026 |
| Maximum age reckoned on | 1 August 2021 (five-year relaxation) |
| Invalid applications list | 12 May 2026 |
| Admit card notice | 20 May 2026 |
| Change of written exam date | 26 May 2026 |
| Written result, PET shortlist; unfair means cancellations | 18 August 2026 |
The exam, PET and final result dates aren't in the advertisement. CSBC announces and changes them by notice on csbc.bihar.gov.in; the written exam date moved five days after the admit card notice. The supplementary list window runs six months from the merit list.
Admit Card
Admit cards are online only, through links on csbc.bihar.gov.in, with a separate one for the written exam and the PET. The Board has published a specimen OMR sheet with the admit card notice in past cycles. If your admit card doesn't appear, check the invalid applications list for the reason.
Result
CSBC publishes, on csbc.bihar.gov.in: the written result shortlisting for the PET (for this advertisement, 18 August 2026), the PET result, the final selection list on written marks, and any supplementary lists in the six months after. Joining dates and district or unit allotment come by separate notice after selection.
Cut Off
The fixed minimum is 30 per cent in the written exam. The real cut-off is the mark where the PET list (five times the vacancies) runs out in each category, and it isn't published in advance. If the exam runs in several shifts, the cut-off is on normalised marks.
CSBC publishes the written result, PET result and final list for each advertisement on csbc.bihar.gov.in, and those are the only reliable record of where the line fell.
Preparation Tips
- Prepare for this paper, not the general constable one. 75 of 100 questions are Physics, Chemistry and Maths at BSEB Intermediate level.
- Use the BSEB syllabus for those three subjects.
- Aim well above 30. That's only the floor.
- Answer every question. Advertisement 02/2026 has no penalty for wrong answers, so a blank is worth the same as a wrong answer. The Board's Special Branch advertisement of the same year deducts 0.25, so read the clause in yours.
- Train for all three events. Missing the jump or shot put after a good run still ends it.
- Get certificates in order before applying, especially the NCL with Form xviiiB, the EWS for the right year, and the freedom fighter dependant certificate.
Sample Papers
CSBC doesn't publish past papers or model papers for Constable (Operator).
It has published a specimen OMR sheet with the admit card notice in past cycles, and keeps earlier results on csbc.bihar.gov.in. For the science subjects, the Bihar School Examination Board website carries the Intermediate syllabus the paper follows.
Official Links
- Central Selection Board of Constable, Bihar: advertisements, admit cards, results and notices
- Advertisement No. 02/2026, Constable (Operator) (PDF)
- GAD resolution 12575 of 9 July 2025 on women's reservation (PDF)
- Bihar School Examination Board, for the Intermediate syllabus
The Board's other current advertisements (01/2026 Special Branch Constable, 02/2025 Driver Constable, 01/2025 Constable) are separate recruitments with different papers.
Frequently Asked Questions
How many vacancies are there?
993 under Advertisement 02/2026, at Level 3 (₹21,700 to ₹69,100).
What's on the paper?
25 questions each of General Knowledge, Physics, Chemistry and Maths. 100 marks, two hours.
Is there negative marking?
Advertisement 02/2026 prescribes none.
What qualification do I need?
Intermediate Science with Physics, Chemistry and Maths, 50 per cent (45 for SC and ST).
Which date is age counted on?
Minimum age on 1 August 2026, maximum on 1 August 2021, because of a five-year relaxation.
Does the PET carry marks?
No. Merit is the written exam alone.
What's the fee?
₹100 for everyone, plus bank charges.
Who appoints me?
The Superintendent of Police (Wireless).
General Awareness / General Knowledge (GK) (23)
- Indian Politics
- Indian History
- Indian Economy
- Important Acts of the Parliament of India
- Honours and Awards
- Indian Geography
- Indian Culture
- World Geography
- Famous Places in India
- Famous Personalities
- Books and Authors
- Sports
- Days and Years
- Inventions
- Highest, Longest, Biggest, Largest, Deepest, Smallest of the World
- General Science
- World Currency
- Country Languages
- Technology
- Physics
- Chemistry
- Biology
- Scientific Names of Plants and Animals
Quantitative Aptitude (49)
- Number System
- H.C.F. & L.C.M.
- Decimal Fractions
- Simplification
- Square Roots & Cube Roots
- Average
- Problems on Numbers
- Problems on Ages
- Surds & Indices
- Percentage
- Operations on Numbers
- Profit & Loss
- Ratio & Proportion
- Partnership
- Chain Rule
- Time & Work
- Pipes & Cistern
- Time & Distance
- Problems on Trains
- Boats & Streams
- Alligation or Mixture
- Simple Interest
- Compound Interest
- Logarithms
- Area
- Volume & Surface Areas
- Mensuration
- Races & Games of Skill
- Calendar
- Clocks
- Stocks & Shares
- Permutations & Combinations
- Probability
- True Discount
- Banker’s Discount
- Heights & Distances
- Odd Man Out & Series
- Algebra
- Divisibility Rules & Remainder Theorem
- Factorials & Power Cycles
- Progressions (A.P., G.P., H.P.)
- Work & Wages
- Set Theory / Venn Diagrams
- Geometry (Lines, Angles, Triangles, Polygons)
- Coordinate Geometry
- Data Interpretation
- Trigonometry
- Statistics (Mean, Median, Mode)
- Arithmetic Operations
Reasoning (34)
- Analogy
- Number Series
- Classification
- Series Completion
- Coding-Decoding
- Input Output
- Inequality
- Blood Relation
- Puzzle Test
- Sequential Output Tracing
- Direction Sense Test
- Linear Seating Arrangement
- Circular Seating Arrangement
- Alphabet Test
- Number, Ranking and Time Sequence Test
- Mathematical Operations
- Logical Sequence of Words
- Arithmetical Reasoning
- Inserting The Missing Character
- Data Sufficiency
- Decision Making
- Assertion and Reason
- Situation Reaction Test
- Verification of Truth of the Statement
- Letter and Symbol Series
- Logic
- Statement - Arguments
- Statement - Assumptions
- Statement - Courses of Action
- Syllogisms
- Statement - Conclusions
- Deriving Conclusions From Passages
- Theme Detection
- Question - Statements
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