DSSSB Junior Scientific Assistant 2026: Syllabus, Exam Pattern & Everything Aspiring Forensic Professionals Must Know
A complete breakdown of Advertisement No. 03/2026 — vacancies, eligibility, pay scale, exam scheme, and subject-wise syllabus for every forensic discipline under the Delhi Forensic Science Laboratory.
For years, the Forensic Science Laboratory (FSL) under the Government of NCT of Delhi has remained one of the most sought-after employers for science graduates and postgraduates who want to build a career inside an actual crime laboratory rather than just studying about one. In 2026, that door has opened wide. The Delhi Subordinate Services Selection Board (DSSSB) released Advertisement No. 03/2026 on 29 May 2026, notifying a combined 1,979 vacancies across 25 post codes in six departments of the Delhi Government[1] — and a significant share of these sit inside the FSL itself, under the designation Junior Scientific Assistant (JSA).
This editorial lays out the recruitment in full: the vacancy structure, who is eligible, what the exam actually tests, and how the syllabus differs across each forensic specialisation — Biology, Chemistry, Physics, Ballistics, Cyber Forensics, Crime Scene, Fingerprint, Documents, Lie Detection, Photography and HRD/QC.
1. The Recruitment at a Glance
| Detail | Information |
|---|---|
| Advertisement No. | 03/2026 (released 29 May 2026) |
| Conducting Body | Delhi Subordinate Services Selection Board (DSSSB) |
| Total Vacancies (all posts) | 1,979 (tentative), across 25 post codes |
| JSA (FSL) Post Codes | 21/26 to 31/26 |
| Application Window | 16 June 2026 – 15 July 2026 |
| Eligibility Cut-off Date | 15 July 2026 |
| Age Limit | 18–27 years (as on cut-off date) |
| Pay Level | Level-5, 7th CPC (₹29,200 – ₹92,300) |
| Application Fee | ₹100 (Gen/OBC/EWS males); waived for SC/ST/PwBD/Women/Ex-Servicemen |
The complete eligibility criteria for these posts includes qualifications such as a Master's degree in Zoology, Botany, Microbiology, Anthropology, Biology, Human Biology, Life Science, Biochemistry, Genetics, Biotechnology, Molecular Biology, or Forensic Science with Zoology or Botany, or alternatively a B.E./B.Tech in Biotechnology for the Biology-stream posts, which carry 44 notified vacancies[8]. The Physics-stream posts require a Master's degree in Physics, Mathematics, Applied Mathematics, or Forensic Science with Physics or Mathematics, with 18 vacancies notified, while the Chemistry-stream requires a Master's in Chemistry, Toxicology, Biochemistry, or Forensic Science with Chemistry, carrying 37 vacancies, and the Psychology-stream requires a Master's in Psychology or Criminology, with 12 vacancies[8].
2. Post-Wise Vacancy & Qualification Snapshot
Advertisement No. 03/2026 covers 1,979 vacancies across 25 post codes in six departments of the Government of NCT of Delhi, including Trained Graduate Teachers, Junior Scientific Assistants in the Forensic Science Laboratory, IT Assistants, and several technical roles in the New Delhi Municipal Council, with posts spanning Pay Level 2 to Pay Level 7 and salaries ranging from ₹19,900 up to ₹1,42,400 per month across the full notification[9]. Within the FSL segment specifically, the JSA posts are split by scientific discipline:
| Discipline / Post Code Group | Typical Qualification Required |
|---|---|
| Biology | M.Sc Zoology/Botany/Biochemistry/Biotechnology/Molecular Biology/Forensic Science (Zoology or Botany) or B.E./B.Tech Biotechnology |
| Chemistry | M.Sc Chemistry/Toxicology/Biochemistry/Forensic Science (Chemistry) |
| Physics | M.Sc Physics/Mathematics/Applied Mathematics/Forensic Science (Physics or Maths) |
| Ballistics | M.Sc Physics/Forensic Science (Physics) as per notified eligibility |
| Cyber Forensics | M.Sc/M.Tech Computer Science, IT, Cyber Security, or Electronics & Communication |
| Crime Scene / District Mobile Forensic Unit | Relevant science postgraduate degree as notified |
| Fingerprint | Relevant science postgraduate degree as notified |
| Documents | Relevant science postgraduate degree as notified |
| Lie Detection | M.Sc/M.A. Psychology or Criminology |
| Photo / HRD-QC | Relevant technical postgraduate degree as notified |
Candidates must always cross-verify exact eligibility against the official detailed advertisement, since the Competent Authority may relax qualifications in exceptional cases for otherwise well-qualified candidates[5].
3. Exam Pattern: How the Written Test Is Structured
The examination scheme for these forensic and technical posts is a One Tier Technical paper distinct from the General paper because it carries two sections — Section-A common to all candidates, and Section-B based on the subject concerned as per the qualification prescribed for the post — and this pattern applies to several posts including Junior Scientific Assistant in Biology, Ballistics, Chemistry, Lie Detection, Documents, HRD/QC, Photo, Cyber Forensic, Crime Scene/District Mobile Forensic Unit, Finger Print and Physics[10]. The Board conducts a 2-hour computer-based paper carrying 200 questions for 200 marks, with each question worth one mark and no descriptive component in the scheme for these posts[10].
| Component | Details |
|---|---|
| Exam Mode | Computer Based Test (CBT), One Tier |
| Total Questions | 200 (Section-A: 100, Section-B: 100) |
| Total Marks | 200 (1 mark per question) |
| Duration | 2 hours |
| Negative Marking | 0.25 marks deducted per wrong answer |
| Question Language | Bilingual (Hindi & English), except language-specific papers |
| Qualifying Criteria | Minimum qualifying marks apply to the Section-B (domain) score |
Section-A subjects — General Awareness, Reasoning Ability, Numerical Aptitude, Hindi and English — are common across DSSSB's technical posts and test general aptitude, carrying 20 questions each, while Section-B depends entirely on the discipline concerned, whether Biology, Chemistry, Physics, Cyber Forensic, Ballistics or another notified subject, and forms the core, discipline-specific portion that ultimately proves decisive for final selection[6]. Final selection for these posts is made after considering the combined score of Section-A and Section-B along with a process of score normalization[4], since candidates across disciplines and shifts are compared on a common merit list.
4. Section-A: The Common Aptitude Portion
This section is identical for every JSA aspirant regardless of specialisation, and is often where marks are lost carelessly despite being the "easier" half of the paper.
- General Awareness — current affairs, static GK, government schemes, science & technology in the news, books and authors, important days.
- Reasoning Ability — analogy, classification, series, coding-decoding, blood relations, direction sense, syllogism, statement-conclusion, puzzles and seating arrangement.
- Numerical Aptitude — number system, percentage, ratio-proportion, average, time-speed-distance, profit-loss, simplification, data interpretation (Class 10 level maths).
- Hindi — grammar, vocabulary, comprehension, error detection.
- English — grammar, vocabulary, comprehension, sentence correction.
5. Section-B: Discipline-Wise Syllabus Breakdown
This is where forensic knowledge actually gets tested, and where preparation must be laboratory-specific rather than generic. Below is the breakdown by stream.
5.1 Biology Stream
The Biology syllabus spans the diversity of the living world, structural organisation in plants and animals, structural and functional organisation of the cell, plant physiology, human biology, sexual reproduction, genetics, biology in human welfare, principles of biotechnology, and ecology[2]. Forensic-specific extensions typically include forensic serology, forensic botany and entomology, wildlife forensics, and DNA-based individual identification.
5.2 Crime Scene / District Mobile Forensic Unit Stream
The Crime Scene syllabus opens with the basics of forensic science — definition, history, and development of forensic science in India — followed by the organisational structure of Forensic Science Laboratories and Mobile Forensic Units, and the legal aspects covering relevant provisions of the criminal justice framework including the erstwhile Indian Penal Code, Code of Criminal Procedure, and the Indian Evidence Act (now succeeded by the corresponding Bharatiya Nyaya Sanhita provisions)[3]. Expect further coverage of crime scene reconstruction, chain of custody, physical evidence collection and packaging, photography of the scene, and first-responder protocols.
5.3 Cyber Forensics Stream
Cyber Forensic candidates are expected to focus on computer science, computer applications, information technology, cyber security, and electronics and communication-related concepts[10]. This typically extends to digital evidence acquisition and preservation, network forensics, mobile device forensics, data recovery, malware analysis fundamentals, cyber laws under the IT Act, and email/social media forensics.
5.4 Ballistics Stream
Ballistics forms part of the Physics-based qualification track and its syllabus is built around firearms identification, internal/external/terminal ballistics, ammunition and cartridge case examination, gunshot residue analysis, trajectory reconstruction, and the Arms Act framework governing weapon classification in India.
5.5 Chemistry / Toxicology Stream
Covers general, organic, physical and analytical chemistry at the postgraduate level, along with toxicology fundamentals — poison classification, viscera analysis, drug and narcotic identification, and instrumental analysis techniques (chromatography, spectroscopy) used in forensic chemistry laboratories.
5.6 Physics Stream
Classical mechanics, electricity and magnetism, optics, modern physics, and applied physics concepts as relevant to forensic instrumentation — voice and sound analysis, document examination optics, and physical evidence measurement techniques.
5.7 Fingerprint, Documents, Lie Detection, Photo & HRD-QC Streams
These smaller but equally competitive streams draw syllabus content from their respective specialised domains: fingerprint classification systems and ridge characteristics for the Fingerprint stream; questioned document examination, handwriting and signature analysis for the Documents stream; psychophysiological detection of deception theory for Lie Detection (Psychology/Criminology background); and forensic photography and quality-control protocols for the Photo/HRD-QC streams.
6. Selection Process & Final Merit
Final merit for the JSA posts is prepared on the basis of written examination performance only, with no separate interview stage built into the scheme for these technical posts[6]. The detailed scheme of examination, including whether any written test, skill test, or interview applies to a specific post, is ultimately notified on the official DSSSB website and candidates are advised to read the detailed advertisement carefully rather than rely solely on secondary sources[5]. All selected candidates are additionally required to complete a mandatory induction training of at least two weeks before joining their respective postings[8].
7. Salary & Career Trajectory
Selected Junior Scientific Assistants are placed under Pay Level-5 of the 7th Central Pay Commission, corresponding to a pay scale of ₹29,200 to ₹92,300, classified as a Group 'C', Non-Gazetted, Non-Ministerial post[5]. Beyond the basic pay, selected candidates receive Dearness Allowance, House Rent Allowance, Travel Allowance and other perks applicable to Delhi Government employees, with gross monthly salary commonly exceeding ₹45,000–₹50,000 depending on posting and applicable allowances[7]. Career-wise, a JSA posting inside the Delhi FSL is widely regarded as one of the more stable entry points into India's forensic laboratory ecosystem, with visibility into live casework across DNA, toxicology, ballistics, cyber forensics, biology, chemistry and physics divisions — and a track record of internal promotions into Senior Scientific Officer and above over a career span.
8. Preparation Strategy for the BFE Community
- Don't neglect Section-A. With 100 marks riding on general aptitude, a weak Section-A score can offset even excellent domain knowledge — treat it as a full subject, not an afterthought.
- Anchor Section-B in your specific discipline's core textbooks rather than generic "forensic science" material — a Cyber Forensics candidate and a Biology candidate are, in effect, writing two very different exams.
- Practice negative-marking discipline. At 0.25 per wrong answer, guessing strategy matters — attempt only when you can eliminate at least two options confidently.
- Track normalization implications. Because scores are normalized across shifts and disciplines, consistency across both sections matters more than an exceptional score in only one.
- Revisit legal and procedural topics (CrPC/BNSS, Evidence Act/BSA, chain of custody) regardless of your discipline — these routinely appear as cross-cutting questions in the Crime Scene and general forensic sections.
Disclaimer: Recruitment details, vacancy numbers, and exam pattern specifics are subject to official amendments/corrigenda issued by DSSSB. Candidates must verify all information against the official notification and website before applying or finalising exam preparation.
- Testbook — DSSSB Scientific Assistant Syllabus & Exam Pattern 2026: testbook.com/dsssb-scientific-assistant/syllabus-exam-pattern
- Toppersexam — DSSSB JSA Biology Syllabus 2026: toppersexam.com (JSA Biology)
- Toppersexam — DSSSB JSA Crime Scene Syllabus 2026: toppersexam.com (JSA Crime Scene)
- Testbook — DSSSB Scientific Assistant Recruitment Notification, 562 Vacancies: testbook.com/dsssb-scientific-assistant
- GeeksforGeeks — DSSSB Scientific Assistant Recruitment 2026 Notification: geeksforgeeks.org
- MyEducationWire — DSSSB Junior Scientific Assistant Recruitment 2026: myeducationwire.com
- Testbook — DSSSB Scientific Assistant Salary 2026: testbook.com/dsssb-scientific-assistant/salary-job-profile
- GovtJobGuru — DSSSB Recruitment 2026 (1,979 posts): govtjobguru.in/jobs/dsssb-recruitment-2026
- GovtServiceInfo — DSSSB Recruitment 2026 – Advt No. 03/2026: govtserviceinfo.com
- MeritPulse — DSSSB Exam Syllabus 2026, Post-Wise Exam Pattern: meritpulse.in/dsssb-exam-syllabus
- Official DSSSB Website (authoritative notification, corrigenda & updates): dsssb.delhi.gov.in
