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The ISRO Liquid Propulsion Systems Centre (LPSC) has officially released the syllabus for the ISRO LPSC Exam 2025 at www.lpsc.gov.in. The exam syllabus is for 23 Technical Assistant, Sub Officer, Technician ‘B’, Heavy Vehicle Driver ‘A’, Light Vehicle Driver ‘A’ posts. This article provides comprehensive details on the LPSC syllabus and paper pattern, available vacancies, selection process and other important information to assist candidates in preparing for the ISRO exam 2025.
ISRO LPSC Exam Pattern and Syllabus 2025
- The ISRO Liquid Propulsion Systems Centre has released syllabus for the upcoming LPSC exam 2025 scheduled for 4th January 2026. The complete written test pattern and syllabus for each post is discussed in detail
- Candidates who applied for this opportunity are strongly advised to read the complete notifications thoroughly, as it is an important official document containing essential information about the ISRO LPSC Recruitment 2025.
- To access and download the notification PDFs, candidates can simply click on the link provided below:
ISRO LPSC Notification 2025- Click Here to Download PDF
ISRO LPSC Syllabus and Test Pattern 2025: Overview
ISRO LPSC is recruiting for various positions under the Liquid Propulsion Systems Centre in the Indian Space Research Organisation. The paper pattern and syllabus helps aspirants to effectively prepare for the ISRO exam.
Candidates who applied for the ISRO Recruitment 2025 can find all the important details on LPSC written test pattern, exam duration, marking scheme and qualifying marks for reserved and unreserved categories.
| ISRO LPSC Examination Pattern and Syllabus 2025 |
| Organization
ISRO Liquid Propulsion Systems Centre (LPSC) |
| Post Name
Technical Assistant, Sub Officer, Technician ‘B’, Heavy Vehicle Driver ‘A’, Light Vehicle Driver ‘A’ |
| Number of Vacancies
23 |
| Age Limit
18 to 35 years |
| Educational Qualification
Diploma/ITI/10TH |
| Salary
Rs.19,900/- to Rs.1,42,400/- |
| ISRO Exam Date
4th January 2026 (Sunday), Exam Venue : Thiruvananthapuram, Kerala |
| ISRO LPSC Written Test Pattern and Syllabus
Available Here |
| Selection Process
Written Exam and Skill Test, Physical Efficiency Test(I and II), Medical Examination and Document Verification |
| Official Website
www.lpsc.gov.in. |
ISRO LPSC Written Test Pattern and Marking Scheme 2025
The selection basis for Technical Assistant-Mechanical ,Technical Assistant-Electronics, Technician ‘B’ : Turner Technician ‘B’ : Fitter, Technician ‘B’ : Refrigeration and Air-Conditioning Mechanic is written test score followed by a skill test.
For Sub-Officer the selection criteria is written test score followed by (Physical efficiency Test) PET & Detailed (Medical Examination ) DME.
For the post of Heavy Vehicle Driver ‘A’ and Light Vehicle Driver ‘A the selection will be based on written test score followed by a skill test where aspirants have to score a minimum. 60% on a scale of 100 points.
| Post Name | Exam Component | Number of Questions | Duration | Marking Scheme | Pass Criteria |
|---|---|---|---|---|---|
|
Technical Assistant-Mechanical Technical Assistant-Electronics Technician ‘B’ : Turner Technician ‘B’ : Fitter Technician ‘B’ : Refrigeration and Air-Conditioning Mechanic |
Written Test | 80 | 90 minutes | 1 mark each, -0.33 for wrong | Unreserved: 32/80
Reserved: 24/80 |
| Skill Test | – | – | Go or no-go basis | Unreserved: 50/100
Reserved: 40/100
|
|
| Sub-Officer | Written Test | 100 | 120 minutes | 1 mark each, -0.25 for wrong | Minimum 48/80 marks in written test |
| Physical Efficiency Test (PET) | – | – | Go/no-go basis | Qualifying only | |
| Detailed Medical Exam (DME) | – | – | – | Qualifying only | |
|
Heavy Vehicle Driver ‘A’ Light Vehicle Driver ‘A’
|
Written Test | 100 | 120 minutes | 1 mark each, -0.25 for wrong | Minimum 50 in Part A; 50 combined in B,C,D |
| Skill Test | Skill Test (min. 60% on a scale of 100 points) |
ISRO LPSC Written Test Syllabus 2025
The written exam pattern for all posts along with their respective post codes has been explained in a clear and simple manner.
This helps candidates understand what exactly they will face in the exam. Since each post has its own syllabus and question style and aspirants should study accordingly.
Going through the pattern beforehand will help aspirants plan their preparation better and boost confidence for the LPSC exam.
A)Technical Assistants
| Post No. | Post Name | Syllabus Details |
|---|---|---|
| 792 | Technical Assistant (Mechanical) | Technical Mathematics: Matrices, determinants, trigonometry, calculus (differentiation, integration)
Applied Mechanics & Strength of Materials: Units, forces, stress/strain, bending, torsion, friction Engineering Materials: Properties, manufacturing, heat treatment Manufacturing Process: Machining, welding, fitting, metrology Thermal Engineering: Thermodynamics, IC engines, boilers, heat transfer Fluid Mechanics & Hydraulic Machineries: Fluid properties, flow, pumps, turbines Refrigeration & Air Conditioning: Principles, cycles, equipment, psychometry Power Plant Engineering: Steam, gas turbines, nuclear, renewable energy Computer Integrated Manufacturing: CAD/CAM, automation, robotics Advanced Production Process: NC/CNC programming, gear manufacturing, advanced machining Industrial Engineering & Management: Production planning, quality control, costing Design of Machine Elements: Design principles of bolts, shafts, gears, cams, joints Machine Drawings: Engineering drawing fundamentals, dimensioning, tolerances |
| 793 | Technical Assistant (Electronics) | Basic Mathematics: Partial fractions, matrices, trig functions, calculus, complex numbers, permutations, binomial theorem
Basic Electronics: AC fundamentals, network theorems, semiconductor devices Electronics Circuits: Wave shaping, biasing, amplifiers, feedback, filters, oscillators Digital Electronics: Boolean algebra, logic gates, combinational/sequential logic circuits, Karnaugh maps Linear Integrated Circuits: Op-amps, timers, PLL, voltage regulators, ADC/DAC Microcontroller: 8051 architecture, instruction set, assembly programming Instrumentation: Measuring instruments, electronic instruments, transducers Communication: Wave propagation, antennas, modulation/demodulation, pulse modulation Computer and Embedded Systems: Basics of computer fundamentals, OS, networking, embedded hardware/software |
B)Technicians
| Post No. | Post Name | Syllabus Description |
|---|---|---|
| 795 | Technician-B (Turner) | SSLC/SSC pass with ITI/NCVT certificate in Turner trade; syllabus covers all trade-specific theory and practical topics such as: CNC programming basics, turning operations, tool handling, precision measurements, and lathe machine operations. |
| 796 | Technician-B (Fitter) | SSLC/SSC pass with ITI/NCVT certificate in Fitter trade; syllabus includes fitting operations, fabrication, assembly, maintenance practices, forging, rolling, quality assurance, mechanical integration, and use of hand and machine tools. |
| 797 | Technician-B (Refrigeration Air-Conditioning Mechanic) | SSLC/SSC pass with ITI/NCVT certificate in Refrigeration & Air Conditioning trade covering refrigeration cycles, air conditioning principles, servicing, installation, maintenance of refrigeration and AC units, refrigerants, and safety practices. |
C)Sub-Officer
| Post No. | Post Name | Syllabus Description |
|---|---|---|
| 794 | Sub Officer |
Building Construction Fixed Fire Fighting Installations Aircraft Fire and Rescue Foam and Foam Making Equipment Hose and Hose Fittings Small and Special Gears and Ladders – Portable Fire Extinguishers – Water Tender and Pump Operations First Aid – Salvage Operations Equipment Used for Salvage Operations – Special Rescue Services (e.g., trapped persons in lifts, sewers, debris of collapsed buildings) Basic Physics and Chemistry Electricity Hydraulics Personal Protection Equipment – Statutory Bodies and Regulations related to Fire Safety Indian Explosives Act and Rules – STEC Regulations Petroleum Act and Rules Gas Cylinder Rules |
D) Motor Vehicle Drivers
| Post No. | Post Name | Syllabus Description |
|---|---|---|
| 798 | Heavy Vehicle Driver-A | Part A: Motor Vehicles Act 1988 (as amended)
Part B: Elementary English (8th Standard level) Part C: Elementary Arithmetic (10th Standard level) Part D: General Knowledge |
| 799 | Light Vehicle Driver-A | Part A: Motor Vehicles Act 1988 (as amended)
Part B: Elementary English (8th Standard level) Part C: Elementary Arithmetic (10th Standard level) Part D: General Knowledge |
Motor Vehicle Drivers: Section-Wise Marks Distribution
The paper pattern for Heavy and Light Vehicle drivers is sub-divide into 4 parts and each part has it own minimum qualifying percentage. Candidates must score at least 50 marks in Part A and a total of 50 marks combined in Parts B, C and D.
| Syllabus | Marks Allotted |
|---|---|
| Part – A (Objective type questions based on Motor Vehicles Act 1988, as amended from time to time) | 50 marks |
| Part – B (English – Elementary English of 8th standard level) | 15 marks |
| Part – C (Arithmetic – Elementary Arithmetic of 10th Standard level) | 15 marks |
| Part – D (General Knowledge) | 20 marks |
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