🧭 Introduction

The Indian Space Research Organisation (ISRO) is India’s premier space agency, responsible for research, development and launching of satellites and launch vehicles. ISRO recruits for various technical positions—one of the most sought‑after being the Scientist/Engineer ‘SC’ roles under the ISRO Centralised Recruitment Board (ICRB). The 2025 recruitment drive offers candidates with engineering degrees a chance to contribute to India’s space missions.

This article presents a detailed and up‑to‑date breakdown of the ISRO Scientist/Engineer recruitment: selection process, exam pattern, syllabus, final selection, preparation tips and useful resources. Keywords optimised: ISRO syllabus, ISRO exam pattern, ISRO preparation, ISRO Scientist/Engineer selection process.

✅ Selection Process

The selection for ISRO Scientist/Engineer ‘SC’ typically follows these stages:

Online Application & Screening – Candidates with requisite engineering qualification apply. The board screens for eligibility and may shortlist based on academic performance.
Written Test (for non‑GATE route) – A written examination comprising discipline‑specific engineering questions and an aptitude section.
- Alternatively, for some vacancies, ISRO may shortlist purely on the basis of a valid GATE score and call candidates directly for interview.
Personal Interview – Shortlisted candidates are interviewed and evaluated on technical knowledge, subject awareness, communication, comprehension and academic achievements.
Final Merit & Appointment – Based on combined performance of written test (if applicable) + interview (or GATE + interview), candidates are selected and offered appointment.

📘 Exam Pattern

1. Written Exam – Non‑GATE Route

Part	Subject / Section	No. of Questions	Marks	Duration	Negative Marking
Part A	Discipline‑specific engineering questions	~80	80	~120 minutes	⅓ mark for wrong answer
Part B	Aptitude & Reasoning – Numerical, Logical, Abstract etc.	~15	20	(within same session)	No negative marking
Total		~95	100	2 hours	—

2. Interview

Marks: 100
Short‑listing Ratio: Generally 1:5 (for each post, five candidates called for interview)
Qualifying Marks:
- General category: Minimum 60% in interview.
- PwBD/Reserved: Minimum 50% (or as specified)

3. Final Selection

Component	Weightage
Written Test	~50 %
Interview	~50 %

Note: For GATE‑based recruitment, the written exam may be skipped and the weightage may differ (GATE score + interview).

📚 Detailed Section‑wise Syllabus

Since ISRO recruitment spans many engineering disciplines, below is a generic framework. Candidates must refer to the official notification for their specific branch.

1. Engineering Discipline (Part A)

Branch‑specific topics (Mechanical / Electronics / Computer Science etc.)
Mechanical Engineering (sample):

Applied Mechanics & Design
Fluid Mechanics & Thermal Sciences
Materials, Manufacturing & Industrial Engineering
Other core subjects relevant to mechanical engineering fundamentals

Electronics / ECE (sample):

Electronic Devices & Circuits
Digital Electronics
Signals & Systems
Control Systems
Communication Systems
Electromagnetics

Computer Science / IT (sample):

Data Structures & Algorithms
Computer Organisation & Architecture
Operating Systems
Database Management Systems
Computer Networks
Software Engineering

2. Aptitude & Reasoning (Part B)

Numerical Reasoning
Logical Reasoning (Verbal & Non‑verbal)
Abstract/Diagrammatic Reasoning
Deductive & Inductive Reasoning
Comprehension & Communication skills

3. Academic & General Awareness (Interview)

For interview, preparation should include:

Technical knowledge of the discipline
Current developments in space science / ISRO missions
Projects, internships, research work undertaken
Communication and presentation of ideas

🔍 Final Selection & Marks Weightage

After interview, ISRO compiles a final merit list based on the combined performance of written test + interview (or GATE + interview as applicable) in the stipulated ratio (normally 50:50).
Tie‑breaker criteria (if any) may include: Written test marks, academic scores, age, etc.
Selected candidates join ISRO as Scientist/Engineer ‘SC’ (Level 10 of 7th CPC) with basic pay approximately ₹56,100/month plus allowances.

💡 Practical Preparation Tips

Download the official notification for your branch and note eligibility, exam pattern, selection criteria.
Build fundamentals: For your engineering discipline, ensure strong basics in core subjects.
Practice aptitude & reasoning: These are common across parts; focus on speed and accuracy.
Mock tests & previous year papers: Attempt sample papers under timed conditions.
Negative marking awareness: For Part A, incorrect MCQs may attract ⅓ mark deduction—practice with caution.
Interview readiness: Prepare your project/work experience, know recent ISRO missions, develop good communication skills.
Time‑table: Allocate daily study slots for technical subjects + aptitude + current affairs.
Revision & notes: Maintain formula sheets, important theorem lists, quick revision set.
Stay updated & subscribe alerts: Recruitment notifications from ISRO appear irregularly—keep checking official site.
Health & consistency: Regular breaks, sleep well, keep up motivation for what can be a long selection process.

🔗 Useful Resource Links

ISRO Careers / Recruitment page – for official notifications, FAQs.
ISRO Scientist Syllabus & Exam Pattern 2025 – see detailed list.
Selection Process details – see various articles breaking down 2025 recruitment.

🧭 Introduction

✅ Selection Process

📘 Exam Pattern

🛰️ Indian Space Research Organisation (ISRO) Scientist/Engineer SC Recruitment 2026 – Complete Syllabus, Pattern & Preparation Guide

🛰️ Indian Space Research Organisation (ISRO) Scientist/Engineer SC Recruitment 2026 – Complete Syllabus, Pattern & Preparation Guide