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Once you’ve confirmed your eligibility for ISRO LPSC Recruitment 2026 (Advertisement No. LPSC/02/2026 dated 15.08.2026), the next crucial step is understanding exactly what to study. LPSC’s written test is curriculum-based, meaning questions are drawn directly from your diploma or ITI trade syllabus rather than a generic aptitude test. This blog breaks down the official exam pattern for every post and the detailed, topic-wise syllabus — including the officially published syllabus for Technical Assistant (Mechanical) — so you can plan your preparation with precision.
ISRO LPSC Exam Details 2026 – Quick Overview
| Particulars | Details |
|---|---|
| Organisation | Liquid Propulsion Systems Centre (LPSC), ISRO, Department of Space |
| Advertisement No. | LPSC/02/2026 dated 15.08.2026 |
| Total Vacancies | 19 |
| Posts | Technical Assistant, Technician ‘B’, Draughtsman ‘B’, Fireman ‘A’ |
| Place of Posting | Valiamala (Thiruvananthapuram) & Bengaluru |
| Mode of Application | Online only |
| Application Start Date | 18.08.2026 (1400 hrs) |
| Application Last Date | 04.09.2026 (1400 hrs) |
| Last Date for Fee Payment | 07.09.2026 (1400 hrs) |
| Exam City | Thiruvananthapuram, Kerala only |
| Selection Process | Written Test + Skill Test / PET / DME (post-wise) |
| Official Website | LPSC official website |
ISRO LPSC Exam Date 2026 – Details Here!
1: Between the period of 1858-1947, how many Viceroys ruled over India?
LPSC hasn’t announced a specific written test date yet for this 2026 recruitment. What’s confirmed so far is only the application timeline: online registration is open from 18.08.2026 to 04.09.2026 (1400 hrs), and the application fee can be paid up to 07.09.2026 (1400 hrs). The written test itself will be conducted at a later date, only at venues in Thiruvananthapuram, Kerala, and candidates will be informed of the exact exam date, time, and venue only through email and the official LPSC website — no other mode of communication will be used.
Based on LPSC’s usual pattern in past recruitment cycles, the written test is typically held a few months after the application window closes, so candidates should keep checking the LPSC website regularly and ensure their registered email ID is active so they don’t miss the admit card release and exam date announcement once it’s out.
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Join NowISRO LPSC Exam Pattern 2026 – Questions, Marks & Post-wise Details
| Particulars | Post Nos. 813–817 | Post No. 802 (Fireman) |
|---|---|---|
| Number of Questions | 80 MCQs | 80 MCQs |
| Duration | 90 minutes | 120 minutes |
| Marks per Correct Answer | +1 | +1 |
| Negative Marking | -0.33 per wrong answer | -0.25 per wrong answer |
| Nature of Syllabus | Curriculum-based (diploma/ITI trade specific) | Fixed general syllabus (given in notification) |
| Tests Theoretical + Practical Knowledge | Yes | Partially (basic science + GK) |
| Qualifying Marks (UR) | 32/80 | 32/80 (approx., as per general norms) |
| Qualifying Marks (Reserved) | 24/80 | 24/80 (approx., as per general norms) |
As per the notification, the syllabus for post nos. 813–817 is curriculum-based and covers the breadth and depth of the candidate’s prescribed diploma/ITI curriculum — it is not restricted to a fixed topic list. Below is the topic-wise breakdown based on the officially published LPSC syllabus and the standard diploma/NCVT curriculum for each discipline/trade.
ISRO LPSC Technical Assistant (Mechanical) 2026 — Post No. 813: Detailed Syllabus
This is the officially published LPSC written test syllabus for Technical Assistant (Mechanical), based on a 3-year Diploma in Mechanical Engineering:
| Subject Area | Key Topics |
|---|---|
| Technical Mathematics | Matrices, determinants, trigonometric functions and properties, properties and solution of triangles, functions, limits & continuity, differentiation, integration |
| Applied Mechanics & Strength of Materials | Units & dimensions, dynamics, circular motion, forces, rotational dynamics, simple/shear/thermal stress & strain, friction, properties of sections, torsion of shafts & springs, bending & deflection of beams |
| Engineering Materials | Mechanical properties of materials & alloys, material science, manufacturing of metals & alloys, heat treatment, iron-carbon equilibrium diagram, powder metallurgy, testing & inspection of materials |
| Manufacturing Process | Machining processes & tools, smithy & forging, welding, soldering & brazing, carpentry, foundry, bench work, fitting, metrology |
| Thermal Engineering | Basics of thermodynamics, thermodynamic processes of perfect gases, air cycles, steady flow energy equation, air compressors, fuels & combustion, I.C. engines & performance, steam boilers, nozzles, turbines, heat transfer |
| Fluid Mechanics & Hydraulic Machinery | Properties of fluids, fluid pressure measurement, kinematics & dynamics of fluid flow, flow through orifices/notches/pipes/nozzles, hydraulic systems, pumps, turbines |
| Refrigeration & Air Conditioning | Principles of refrigeration, air refrigeration system, vapour compression cycle, refrigeration equipment, refrigerants, applications, psychrometry |
| Power Plant Engineering | Steam generators, properties of steam, thermodynamic vapour cycle, steam engines/turbines/condensers, gas turbine, diesel power plant, nuclear & renewable energy engineering |
| Computer Integrated Manufacturing | CAD & geometric modelling, CAM methods, CAPP, CNC & DNC, basics of automation & robotics, flexible manufacturing systems |
| Advanced Production Process | NC/CNC concepts & programming, machining & turning centres, broaching machines, gear manufacture, press tools, plastics processing, jigs & fixtures, grinding, surface finishing, non-conventional machining, additive manufacturing |
| Industrial Engineering & Management | Organisation structure, production planning & control, inspection & quality control, control charts, estimating & costing, value engineering, material handling, plant maintenance |
| Design of Machine Elements | Design basics of bolts, nuts, screws, shafts, keys, couplings, belts, chains, gears, flywheels, governors, cams, riveted & welded joints |
| Machine Drawings | Fundamentals of engineering drawing, dimensioning, tolerances, standard symbols, fits, process sheets |
ISRO LPSC Technical Assistant (Chemical) Syllabus 2026 — Post No. 814
For the 3-year Diploma in Chemical Engineering, since the syllabus is curriculum-based, candidates should focus on the core subject areas typically covered in a Chemical Engineering diploma:
- Engineering Chemistry: Atomic structure, chemical bonding, periodic properties, acids & bases, solutions, electrochemistry, corrosion, polymers, fuels
- Chemical Process Technology: Unit operations, unit processes, mass transfer, heat transfer, distillation, absorption, filtration
- Chemical Engineering Thermodynamics: Laws of thermodynamics, phase equilibria, chemical equilibrium
- Propellant & Process Chemistry: Chemical process control, propellant servicing concepts, process quality documentation (relevant to LPSC’s core function)
- Instrumentation & Process Control: Measurement of pressure, temperature, flow, level; basic control loops
- Analytical Chemistry: Titrimetric analysis, gravimetric analysis, chemical testing methods, lab safety
- Materials & Corrosion: Properties of industrial chemicals, material compatibility, corrosion prevention
- Environment, Health & Safety: Handling of hazardous/flammable chemicals, safety protocols in chemical process industries
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Join NowISRO LPSC Technician ‘B’ (Electronic Mechanic) Syllabus 2026— Post No. 815
Based on the NCVT-prescribed Electronic Mechanic trade curriculum (ITI level), candidates should prepare the following core areas:
- Basic Electronics: Semiconductor devices (diodes, transistors), rectifiers, amplifiers, oscillators
- Electrical Fundamentals: Ohm’s Law, circuit laws, AC/DC fundamentals, measuring instruments
- PCB Technology: PCB design basics, wiring, soldering techniques, component identification
- Digital Electronics: Logic gates, flip-flops, counters, basic digital circuits
- Testing & Measurement: Use of multimeters, CROs, signal generators; value measurement and screening of components
- Electronic Equipment Maintenance: Calibration, fault-finding, and maintenance of electronic sub-systems
- Electrical Safety: Wiring practices, earthing, safety precautions while handling electronic/electrical equipment
- Workshop Practice: Assembly, integration, and testing of electronic packages and harnesses
ISRO LPSC Technician ‘B’ (Fitter) Syllabus 2026 — Post No. 816
Based on the NCVT-prescribed Fitter trade curriculum, key preparation areas include:
- Workshop Safety & Practices: General safety norms, use of hand and power tools
- Measurement & Marking: Precision measuring instruments (vernier caliper, micrometer), marking and layout techniques
- Fitting Operations: Filing, sawing, drilling, chipping, grinding, and general fitting operations
- Forging & Sheet Metal Work: Basic forging, rolling, sheet metal fabrication
- Materials Science: Properties of metals and alloys, heat treatment basics
- Engineering Drawing: Reading and interpreting engineering drawings, orthographic projections, dimensioning, tolerances
- Assembly & Maintenance: Mechanical integration, assembly & dismantling of hardware, flight assembly and testing of mechanisms
- Quality Control: Non-destructive testing basics, hardware inspection, quality assurance practices
ISRO LPSC 2026 Draughtsman ‘B’ (Mechanical) Syllabus 2026 — Post No. 817
Based on the NCVT-prescribed Draughtsman (Mechanical) trade curriculum, candidates should prepare:
- Engineering Drawing Fundamentals: Orthographic projections, isometric/oblique projections, sectional views
- Drafting Standards: BIS/ISO drawing standards, dimensioning practices, tolerancing (GD&T basics)
- Machine Drawing: Fasteners, keys, couplings, bearings, gears in drawing format
- Fluid Schematics: Preparation of piping and fluid system schematics (relevant to LPSC’s propulsion systems work)
- CAD Tools: Basic knowledge of computer-aided drafting concepts and conventions
- Bill of Materials & Documentation: Preparation of BOM, drawing sheets, and technical documentation as per stipulated drawing standards
- Materials & Manufacturing Basics: General knowledge of materials and manufacturing processes relevant to interpreting drawings accurately
ISRO LPSC 2026 Fireman ‘A’ 2026 — Post No. 802: Official Written Test Syllabus
Unlike the other posts, the Fireman ‘A’ syllabus is explicitly listed in the official notification and covers the following fixed topics:
| Subject Area | Topics Covered |
|---|---|
| Basic Chemistry | Chemistry with reference to flammable liquids and gases |
| LPG Properties | Characteristics and behaviour of LPG |
| Physics Fundamentals | Relationship between pressure, volume, and temperature |
| Mensuration | Areas of triangle, rectangle, and parallelogram; volumes of cylinder, cone, sphere, and cuboid |
| Gas Properties | Properties of CO₂, O₂, H₂, and inert gases |
| Electrical Safety | Basic concepts in the use of electricity and its associated hazards |
| Properties of Water | Physical and chemical properties relevant to firefighting |
| General Knowledge | Current affairs and general awareness |
This is a comparatively compact, science-and-GK-focused syllabus, quite different from the diploma/ITI-based syllabus of the other posts — making it more approachable for candidates from a general SSLC/SSC background, provided they build a strong foundation in the listed science topics.
ISRO LPSC 2026 Weightage Approach: How to Prioritize Your Preparation
| Post | High-Priority Areas |
|---|---|
| Technical Assistant (Mechanical) | Applied Mechanics & Strength of Materials, Manufacturing Process, Thermal Engineering, Machine Drawings |
| Technical Assistant (Chemical) | Engineering Chemistry, Chemical Process Technology, Instrumentation & Process Control |
| Technician (Electronic Mechanic) | Basic Electronics, PCB Technology, Testing & Measurement |
| Technician (Fitter) | Fitting Operations, Engineering Drawing, Measurement & Marking |
| Draughtsman (Mechanical) | Engineering Drawing Fundamentals, Machine Drawing, Drafting Standards |
| Fireman ‘A’ | Basic Chemistry (flammable substances), Mensuration, General Knowledge |
Tips to Prepare for the ISRO LPSC 2026 Written Test
- Stick closely to your qualifying curriculum: Since the exam is explicitly curriculum-based, revising your diploma/ITI textbooks thoroughly is more effective than relying solely on generic government exam guides.
- Practice previous year LPSC/ISRO papers: Reviewing earlier LPSC, VSSC, or other ISRO unit question papers for your trade/discipline helps you understand the question difficulty and pattern.
- Balance breadth and depth: The notification specifically states that both breadth and depth of the curriculum will be tested — don’t skip “minor” topics assuming only core chapters will be asked.
- Time yourself while practising: With 80 questions in 90 minutes (or 120 minutes for Fireman), you have just over a minute per question — build speed through timed mock tests.
- Be strategic with negative marking: Attempt only the questions you’re reasonably confident about, since 0.33 (or 0.25) marks are deducted for every wrong answer.
- Fireman aspirants should not neglect GK: Since the syllabus includes General Knowledge alongside science topics, dedicate consistent daily time to current affairs revision.
- Revise engineering drawing basics even for non-Draughtsman posts: Machine drawing concepts feature in the Technical Assistant (Mechanical) syllabus too, so don’t overlook this scoring area.
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Since the ISRO LPSC written test is entirely curriculum-based and covers a wide range of technical subjects, structured and trade-specific preparation makes all the difference. The Entri App offers subject-wise study material, mock tests, and previous year question practice tailored to ISRO, DRDO, and other technical recruitment exams — helping diploma, ITI, and SSLC-qualified aspirants prepare systematically for each subject area listed above. Download the Entri App to start your topic-wise preparation for ISRO LPSC Recruitment 2026 today.
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Join NowFrequently Asked Questions
Is there a fixed syllabus for the ISRO LPSC Technical Assistant and Technician written test?
No, except for Fireman ‘A’, the syllabus is curriculum-based, meaning it follows the candidate’s diploma/ITI curriculum rather than a fixed topic list, though the officially published Mechanical Technical Assistant syllabus gives a clear indication of expected subject areas.
What is the exam duration and number of questions for post nos. 813–817?
80 multiple-choice questions to be completed in 90 minutes.
What is the exam duration for the Fireman 'A' post?
80 multiple-choice questions to be completed in 120 minutes.
What is the negative marking scheme in the ISRO LPSC written test?
0.33 marks are deducted per wrong answer for post nos. 813–817, and 0.25 marks for post no. 802.
What topics are covered in the ISRO LPSC Fireman 'A' syllabus?
Basic chemistry of flammable liquids/gases, LPG properties, pressure-volume-temperature relations, mensuration, properties of gases (CO₂, O₂, H₂, inert gases), electrical safety, properties of water, and general knowledge.
Is the ISRO LPSC Technical Assistant (Mechanical) syllabus officially published?
Yes, LPSC has published a detailed subject-wise syllabus for Technical Assistant (Mechanical) covering technical mathematics, applied mechanics, manufacturing processes, thermal engineering, and more.
Does the ISRO LPSC written test cover both theory and practical knowledge?
Yes, for post nos. 813–817, the notification specifically states the test evaluates both theoretical and practical knowledge covering the breadth and depth of the prescribed curriculum.
Is General Knowledge part of the LPSC syllabus for all posts?
General Knowledge is explicitly listed only in the Fireman ‘A’ syllabus; for other posts, the focus is on technical/curriculum-based subjects.
Where can candidates find the exact subject-wise syllabus for their post?
Candidates should refer to the syllabus documents published on the official LPSC website (lpsc.gov.in) for their specific post/discipline, in addition to their diploma/ITI curriculum.
