DRDO Exams Preparation Hub
What is DRDO?
Defence Research & Development Organisation (DRDO) is the premier agency under the Department of Defence R&D, Ministry of Defence, Government of India. DRDO is dedicated to empowering India with state-of-the-art indigenous defence technologies and self-reliance in strategic systems.
DRDO was established in 1958 by amalgamating the Technical Development Establishment (TDEs) of the Indian Army and the Directorate of Technical Development & Production (DTDP) with the Defence Science Organisation (DSO). Today, DRDO operates a formidable network of over 50 dedicated national laboratories and establishments.
DRDO recruits civilian scientists, technical specialists, diploma holders, ITI technicians, and researchers through two primary conducting authorities:
- Recruitment & Assessment Centre (RAC): Conducts Gazetted Scientist selections (Scientist 'B' to 'G') and assesses scientific staff under the Flexible Complementing Scheme (FCS).
- Centre for Personnel Talent Management (CEPTAM): Coordinates centralized recruitment for non-gazetted technical (STA-B, Tech-A) and administrative & allied cadre posts.
- Full NameDefence R&D Organisation
- Established1958
- HeadquartersDRDO Bhawan, New Delhi
- Parent MinistryMinistry of Defence (MoD)
- Network50+ Specialized Labs
- Scientific ServiceDRDS (Group 'A' Gazetted)
- Recruiting WingsRAC & CEPTAM
- Promotion SystemFlexible Complementing (FCS)
Technology Clusters & Laboratories
DRDO laboratories are organized into six major technology clusters, each addressing critical operational domains of the Indian Armed Forces. Aspirants selected for DRDO careers get posted to these renowned establishments:
Major DRDO Career Categories
Unlike examinations with a single uniform syllabus, DRDO recruitment is categorized into distinctive cadres catering to specific educational qualifications:
DRDO Scientist Cadre (DRDS)
The Defence Research & Development Service (DRDS) represents the premier civilian scientific corps of India. Administered through the Recruitment and Assessment Centre (RAC), scientists lead mission-mode projects developing strategic defence weapons, hypersonic vehicles, electronics, and quantum technologies.
📈 Flexible Complementing Scheme (FCS) Promotion Ladder
Unlike conventional government departments where promotions depend on vacancies in senior posts, DRDO scientists are promoted through the Flexible Complementing Scheme (FCS). Under FCS, promotions are vacancy-free and based solely on minimum residency period, confidential performance reports, and peer-review assessment:
Explore Dedicated DRDO Scientist Guides:
DRDO CEPTAM
The Centre for Personnel Talent Management (CEPTAM) is DRDO's corporate recruitment agency tasked with attracting technical, administrative, and allied non-gazetted talent. CEPTAM conducts national computer-based screening examinations and trade/skill tests across India:
CEPTAM Exam Structure Comparison:
| Post Name | Tier-I Exam | Tier-II Exam | Final Merit Criterion |
|---|---|---|---|
| STA-B (Senior Technical Asst) | CBT Screening: 120 MCQs (Quant, Reasoning, GK, English, Gen Science) - 90 Mins | CBT Subject Test: 100 MCQs in core branch (Mechanical, ECE, CS, Electrical, etc.) - 90 Mins | 100% on Tier-II Subject CBT Score (Tier-I is qualifying) |
| Technician-A (Tech-A) | CBT: 120 MCQs (Sec A: 40 Gen Aptitude + Sec B: 80 Trade-specific) - 90 Mins | Trade / Practical Skill Test in laboratory/workshop (Qualifying nature) | Tier-I CBT Score (Subject to qualifying Tier-II Trade Test) |
| Admin & Allied (A&A) | CBT: 75 / 200 MCQs depending on post (Gen Awareness, Reasoning, Quant, English) | Skill Test / Typing Test / Stenography / Physical Endurance & Driving Test | Tier-I CBT Score (Subject to qualifying Skill/Physical test) |
Research Fellowships (JRF / SRF / RA)
DRDO research establishments offer dynamic research fellowships for young scholars and postgraduates with competitive stipends, contingency grants, and direct access to state-of-the-art defence infrastructure. Fellowships often pave the way for Ph.D registration in premier institutes like IITs, IISc, and NITs:
DRDO Apprenticeship Training
Under the provisions of the Apprentices Act, 1961, DRDO establishments announce annual 1-year apprenticeship training batches for fresh pass-outs to gain hands-on industrial and technical exposure:
nats.education.gov.in), and ITI candidates on the NAPS apprenticeship portal (apprenticeshipindia.gov.in) before applying to individual DRDO laboratory notifications.Eligibility Criteria
Match your educational qualification with the corresponding DRDO career tracks and age criteria:
| Post / Track | Educational Qualification | Prescribed Age Limit | Conducting Body |
|---|---|---|---|
| Scientist 'B' | First Class B.E. / B.Tech or First Class Master's in Science + Valid GATE Score | General/EWS: Up to 28-35 Years* (OBC: +3 yrs, SC/ST: +5 yrs) | RAC (rac.gov.in) |
| CEPTAM STA-B | 3-Year Recognized Diploma in Engineering or B.Sc in Science subjects (First Class) | 18 to 28 Years* | CEPTAM |
| CEPTAM Tech-A | Class 10th Pass (High School) + ITI / NTC Certificate in designated trade | 18 to 28 Years* | CEPTAM |
| Admin & Allied | 10th / 12th / Bachelor's Degree depending on specific post profile | 18 to 27/30 Years* | CEPTAM |
| JRF (Research Fellow) | First Class B.E./B.Tech or M.Sc with NET / GATE qualification | Maximum 28 Years* (32 for SRF) | Respective DRDO Lab |
| Apprenticeship | Fresh B.Tech, Diploma, or ITI pass-outs (within last 3 years of passing) | Minimum 18 Years | Respective DRDO Lab |
*Standard Government of India age relaxations apply: SC/ST candidates get 5 years, OBC (Non-Creamy Layer) get 3 years, PwBD candidates get 10 years, and Ex-Servicemen get relaxations as per Central Govt rules.
Selection Process Pipeline
DRDO ensures rigorous and merit-driven selections through systematic evaluation stages tailored for scientific, technical, and support cadres:
7th CPC Salary Structure & Allowances
DRDO employees enjoy premier Central Government remuneration under the 7th Central Pay Commission (CPC), along with defence-specific professional perks:
| Cadre / Post | 7th CPC Pay Level | Basic Pay Scale | Estimated Gross (X City)* |
|---|---|---|---|
| Scientist 'B' | Pay Level 10 | ₹56,100 - ₹1,77,500 | ₹1,05,000 - ₹1,12,000/mo |
| Scientist 'C' | Pay Level 11 | ₹67,700 - ₹2,08,700 | ₹1,24,000 - ₹1,32,000/mo |
| Scientist 'D' | Pay Level 12 | ₹78,800 - ₹2,09,200 | ₹1,44,000 - ₹1,53,000/mo |
| Scientist 'E' | Pay Level 13 | ₹1,23,100 - ₹2,15,900 | ₹2,15,000 - ₹2,28,000/mo |
| Scientist 'F' | Pay Level 13A | ₹1,31,100 - ₹2,16,600 | ₹2,30,000 - ₹2,42,000/mo |
| Scientist 'G' | Pay Level 14 | ₹1,44,200 - ₹2,18,200 | ₹2,50,000 - ₹2,65,000/mo |
| CEPTAM STA-B | Pay Level 6 | ₹35,400 - ₹1,12,400 | ₹66,000 - ₹72,000/mo |
| CEPTAM Tech-A | Pay Level 2 | ₹19,900 - ₹63,200 | ₹38,000 - ₹43,000/mo |
| Admin & Allied | Pay Level 2 to 4 | ₹19,900 - ₹81,100 | ₹38,000 - ₹51,000/mo |
| JRF / SRF / RA | Consolidated Stipend | ₹37,000 - ₹67,000 + HRA | ₹45,000 - ₹85,000/mo |
🎖️ Additional Allowances & Perks
- Dearness Allowance (DA): Indexed biannually against inflation as per Central Government rates.
- House Rent Allowance (HRA): Granted at 30% (Class X cities), 20% (Class Y), or 10% (Class Z) of basic pay, or official DRDO residential quarters.
- Transport Allowance (TA): Up to ₹7,200 + DA per month in higher TPTA cities.
- Professional Update Allowance: Special annual grant for DRDO scientists to purchase technical books, attend international conferences, and maintain society memberships.
- Healthcare: Comprehensive medical cover under Central Government Health Scheme (CGHS) or empanelled hospitals for employee and dependent family members.
- Leave Travel Concession (LTC) & Children Education Allowance (CEA): Reimbursed as per Central Govt standards.
Syllabus & Exam Pattern Breakdown
DRDO exam blueprints are customized based on the recruiting wing:
📘 CEPTAM STA-B Syllabus & Pattern
Tier-I CBT (Screening): 120 Questions (90 Mins) covering Quantitative Aptitude, General Intelligence & Reasoning, General Awareness, General Science, and English.
Tier-II CBT (Subject): 100 Questions (90 Mins) strictly mapped to your engineering diploma or science graduation branch.
📘 Technician-A Syllabus & Pattern
Tier-I CBT: 120 Questions (90 Mins). Divided into Section A (Quantitative, Reasoning, English, General Awareness - 40 marks) and Section B (Trade Specific Subjects - 80 marks).
Tier-II: Trade / Practical Skill test conducted at DRDO laboratories (Qualifying nature).
📘 Scientist 'B' RAC Exam & GATE
Part I: Mapped to standard GATE syllabus for respective discipline (Mechanical, Electronics, Computer Science, Electrical, Chemistry, Physics, Materials).
RAC Interview: Comprehensive technical assessment evaluating core concepts, project work, and problem-solving aptitude.