DRDO RAC Scientist B (Combined Recruitment) 2026 Mock Test Series

Candidates preparing for the DRDO Scientist B recruitment must adhere to several critical guidelines to ensure their application is successful and their preparation is effective. Following these instructions will minimize the risk of rejection and maximize the chances of selection:

• Adhere to Document Specifications: Failure to follow image size, resolution, or file type requirements for photos and signatures is a common reason for application rejection. Always use standard tools for resizing and ensuring clarity.
• Verify Eligibility Prerequisites: Ensure your educational qualifications (B.E./B.Tech/M.Sc.) and GATE scores meet the cutoff requirements specified in the official notification. Candidates from IITs/NITs may have different requirements regarding GATE scores; always check the specific clauses in the latest notification.
• Maintain Updated Records: Keep your login credentials, application form copies, and fee payment receipts safe. These are essential for downloading the admit card and checking the result later.
• Focus on Technical Core: Since the selection heavily prioritizes technical and engineering knowledge, base your study on the core syllabus and standard textbooks. Do not rely solely on summarized notes.
• Strategic Preparation: Develop a disciplined routine. Balance your focus between theoretical concepts and problem-solving practice to handle the level of questions expected for a Scientist B role.
• Use Official Sources: Always refer to the official website of the DRDO or the Recruitment and Assessment Centre (RAC) for any updates or changes. Avoid relying on unofficial or third-party interpretations of the rules.

The DRDO Recruitment and Assessment Centre (RAC) conducts the Scientist B recruitment primarily through the GATE score and a subsequent personal interview process. Candidates must possess a valid GATE score in the relevant discipline to be eligible for the screening process. Official updates are released exclusively on the RAC portal (rac.gov.in). Applicants are advised to monitor the official website regularly for the 2026 recruitment notification, as DRDO does not utilize third-party portals for official announcements regarding Scientist B vacancies.

To download the official DRDO RAC Scientist B notification, follow these steps:

• Visit the official website: rac.gov.in.
• Navigate to the 'Active Advertisements' section.
• Click on the specific advertisement link for 'Scientist B'.
• Select the 'View/Download' option to access the official PDF document.
• Verify the document signature and issuance date before proceeding with the application.

Vacancies for Scientist B are released discipline-wise based on DRDO requirements. The breakdown typically follows:

The application fee for DRDO RAC Scientist B is as follows:

• General/OBC/EWS Male: INR 100
• SC/ST/PwD/Women: Exempted
• Payment Mode: Online (SBI Collect/Credit/Debit/Net Banking)

The maximum age limit for a Scientist B candidate is 28 years for the Unreserved (UR) category as of the crucial date mentioned in the notification.

• SC/ST: 5 years
• OBC (Non-Creamy Layer): 3 years
• PwBD (General): 10 years
• Ex-Servicemen: As per Government of India rules

Candidates must hold at least a First Class Bachelor's Degree in Engineering or Technology in the relevant discipline from a recognized university. A valid GATE score in the corresponding subject is mandatory for shortlisting.

1. Screening of applications based on GATE scores.
2. Shortlisting of candidates for the personal interview.
3. Personal Interview (Technical and Behavioral assessment).
4. Final merit list based on interview performance.
5. Document Verification and Medical Examination.

Scientist B is appointed in Pay Level 10 of the 7th CPC. The initial basic pay is INR 56,100, excluding Dearness Allowance (DA), House Rent Allowance (HRA), and Transport Allowance.

Call letters for the interview are issued electronically via the RAC portal. Candidates must carry the original Call Letter, valid Photo ID (Aadhaar, PAN, Passport), and educational mark sheets to the venue.

The final merit list is prepared strictly based on the performance in the Personal Interview for candidates who qualify the initial GATE score screening criteria.

Focus on core technical subjects relevant to your engineering branch. Practice GATE-level conceptual problems to ensure a high percentile. Prepare for technical interviews by reviewing project work, internships, and fundamental principles of your specialization. Stay updated with DRDO's current research domains.

The cut-off scores for the DRDO Scientist B recruitment are the minimum marks or ranks required in the GATE examination to qualify for the next stage, which is the personal interview. These cut-offs are not static and can vary significantly depending on several factors, including the total number of vacancies available in a specific discipline, the number of candidates who applied, and the overall difficulty level of the GATE exam for that particular year. Because the selection is competitive, the cut-off effectively functions as a threshold to ensure that only the most meritorious candidates are invited for an interview. The cut-off marks are typically released by the RAC alongside the results for each discipline. Candidates should check the official website regularly once results are announced to see if they have crossed the threshold for their respective category and branch. Meeting the cut-off is a prerequisite for advancing further in the recruitment journey.