Quick Summary: Wondering how to check your OSSC CHSL Answer Key 2026? The Odisha Staff Selection Commission (OSSC) conducts the Computer Based Recruitment Examination (CBRE) for 124 Specialist Posts (Amin, Junior Fisheries Technical Assistant, and Junior Forensic Attendant) under Advt. No. IIE-44/2025-728/OSSC. Candidates who appeared for the exam can easily view their official response sheet, compute their marks with 0.25 Negative Marking, and check their real-time Shift & Category Rank on CBTRank. Follow our simple step-by-step guide below to check your score in seconds.
| OSSC CHSL Specialist Posts 2026: Key Overview | |
|---|---|
| Recruiting Board | Odisha Staff Selection Commission (OSSC) |
| Advertisement Reference | Advt. No. IIE-44/2025-728/OSSC (Post Code: 367) |
| Posts Covered | Amin, Junior Fisheries Technical Assistant (JFTA), Junior Forensic Attendant |
| Total Vacancies | 124 Vacancies (41 seats reserved for women) |
| Exam Mode | Computer Based Recruitment Examination (CBRE Online) |
| Negative Marking | 0.25 Mark deduction per wrong answer |
| Exam Duration | 2 Hours (120 Minutes) |
| Selection Process | Stage-I Prelims (CBRE) → Stage-II Mains (Technical) → Certificate Verification |
| Answer Key & Rank Link | cbtrank.com/ossc-chsl/answerkey |
1. How to Check OSSC CHSL Answer Key & Calculate Rank on CBTRank
Checking your answer key and calculating your marks manually can be tedious and prone to mistakes. By using CBTRank, you can get an instant, error-free score breakdown and view your live shift rank. Follow these simple steps:
Step 1: Open Your Official Response Sheet
Visit the official OSSC website at www.ossc.gov.in and log in using your registered User ID and Password. Open your OSSC CHSL Preliminary Exam Response Sheet / Objection Tracker. Copy the full URL from your browser address bar.
Step 2: Visit the CBTRank Calculator Page
Go directly to the dedicated OSSC tool on CBTRank: cbtrank.com/ossc-chsl/answerkey.
Step 3: Paste Your Response URL & Choose Details
Paste your copied response sheet link into the designated field. Select your applied post (Amin, Junior Fisheries Technical Assistant, or Junior Forensic Attendant), your community category (UR, SEBC, SC, ST), and any applicable horizontal category (Women, Ex-SM, PwD).
Step 4: Check Your Scorecard & Real-Time Shift Rank
Click on "Calculate Marks and Rank". Within seconds, CBTRank will evaluate your answers, apply the negative marking penalty (-0.25 per wrong answer), show your subject-wise marks, accuracy rate, total raw score, and your live rank against hundreds of candidates who took the exam in the same shift.
2. OSSC CHSL Prelims Exam Pattern & Marks Distribution
According to Annexure-C of Advertisement No. 728/OSSC, the Preliminary Exam consists of a single objective paper with 150 questions for 150 marks. Candidates have 2 Hours (120 Minutes) to complete the test. A penalty of 0.25 marks is deducted for each incorrect answer. The paper covers five key subject areas:
- Arithmetic (10th Standard Level): Evaluates fundamental math topics such as Number Systems, Fractions, Decimals, LCM & HCF, Percentages, Ratio and Proportion, Averages, Profit and Loss, Simple & Compound Interest, and Time & Work.
- Data Interpretation (10th Standard Level): Tests your ability to interpret information from Tables, Charts, Graphs, and Data Sufficiency problems.
- Logical Reasoning & General Mental Ability: Tests Verbal and Non-Verbal reasoning, Analogies, Coding-Decoding, Series Completion, Blood Relations, and Spatial Orientation.
- Current Events of National and International Importance: Covers major national and international news, sports events, scientific discoveries, government schemes, and awards.
- Computer & Internet Awareness: Assesses basic computer knowledge, operating systems, MS Office tools (Word, Excel, PowerPoint), email handling, and internet basics.
| Section / Subject | Question Type | Total Questions & Marks | Marking Scheme |
|---|---|---|---|
| Stage-I: Preliminary Examination (Common Paper) | |||
| 1. Arithmetic (10th Standard) | Objective MCQs (CBRE Online) |
150 Questions (150 Marks) |
-0.25 Mark per wrong answer +1.0 Mark per correct answer |
| 2. Data Interpretation | |||
| 3. Logical Reasoning & Mental Ability | |||
| 4. Current Events | |||
| 5. Computer & Internet Awareness | |||
| Total (Exam Duration: 2 Hours) | Single Paper | 150 Marks | Bilingual: English & Odia |
3. OSSC CHSL Selection Process & Merit Weightage
The recruitment for OSSC Specialist posts is completed across three statutory stages:
The Preliminary Examination serves as a screening test. Candidates qualifying the prelims will be shortlisted for the Main Written Examination at a ratio of at least 5 times the number of advertised vacancies in each category.
This paper focuses on the technical specialization of each post (Surveying/Civil for Amin, Fisheries Science for JFTA, and Science for Forensic Attendant). Candidates are shortlisted for Certificate Verification at a 1:2 ratio (2 times the vacancies).
Original educational qualifications, caste certificates, and special category certificates are verified. The final merit list is prepared 100% on the basis of marks scored in the Stage-II Main Written Examination.
4. Official OSSC Marking Scheme & Raw Score Formula
The raw score for the preliminary examination is calculated using the official marking rule outlined in the notification:
• Correct Response: +1.0 Mark | Incorrect Response: -0.25 Mark | Unattempted Question: 0.00 Mark
Multi-Shift Normalisation: Because the CBRE exam is conducted across multiple shifts on 25.09.2026, raw scores are normalized by the Commission using the standard formula published vide Notice No. 2444/OSSC dated 02.09.2021 before preparing the shortlist for Mains.
5. Post-Wise Vacancies, Pay Matrix & Eligibility Summary
| Post Title & Department | Vacancies | Pay Scale (ORSP 2017) | Essential Educational Qualification | Age Limit |
|---|---|---|---|---|
| Amin (District Offices – State Cadre) Engineer-in-Chief, Water Resources, Odisha |
15 (06 Women) | Level-3 (Cell-1) Rs. 21,700 – 69,100 |
Passed 10+2 Examination from a recognized Board + Certificate in Basic Computer Skills | 21 – 42 Yrs |
| Junior Fisheries Technical Assistant (JFTA) Directorate of Fisheries, Cuttack, Odisha |
15 (05 Women) | Level-3 (Cell-1) Rs. 21,700 – 69,100 |
Passed +2 Vocational in Fisheries/Aquaculture OR +2 Science + Must know swimming | 21 – 42 Yrs |
| Junior Forensic Attendant State Forensic Science Laboratory, Bhubaneswar |
94 (30 Women) | Level-3 (Cell-1) Rs. 21,700 – 69,100 |
Passed +2 Science examination from a recognized Council/Board | 21 – 42 Yrs |
| Grand Total Vacancies | 124 Posts | Age relaxation: 5 years for SC/ST/SEBC/Women, 10 years for PwD | ||
6. Frequently Asked Questions (FAQs)
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