ISRO LPSC Selection Process 2026: Written Test, Skill Test, PET & DME Explained in Detail

Understanding the selection process is just as important as checking your eligibility when preparing for ISRO LPSC Recruitment 2026 (Advertisement No. LPSC/02/2026 dated 15.08.2026). LPSC follows a different selection process for Technical Assistant/Technician/Draughtsman posts compared to the Fireman ‘A’ post, and knowing exactly what each stage involves — the exam pattern, negative marking, qualifying marks, and shortlisting ratios — will help you prepare strategically and avoid last-minute surprises. This blog covers the complete selection process for all 19 posts under this recruitment drive.

ISRO LPSC Selection Process 2026 – Detailed PDF

Check the ISRO LPSC Selection Process 2026 notification PDF for complete details on the written test, skill test, Fireman PET, DME, and merit list criteria. Candidates are advised to read the official notification carefully before applying.

ISRO LPSC Recruitment 2026 Details

ISRO LPSC Selection Process 2026 – Quick View

ISRO LPSC 2026 Selection Process for Technical Assistant, Technician ‘B’ & Draughtsman ‘B’

The selection process for these posts consists of two stages: a Written Test followed by a Skill Test.

Stage 1: Written Test

The written test is designed to assess the breadth and depth of the candidate’s curriculum knowledge, so preparation should not be limited to theory alone — practical, trade-specific understanding is equally important.

Qualifying Marks for Written Test & Skill Test

Note: EWS candidates are required to meet the same qualifying standard as Unreserved candidates.

Stage 2: ISRO LPSC 2026 Skill Test

• Based on written test performance, candidates are shortlisted for the Skill Test in a 1:5 ratio, with a minimum of 10 candidates shortlisted regardless of vacancy count.
• The Skill Test is conducted purely on a ‘Go/No-Go’ basis — candidates either pass or fail; there is no scoring system that carries forward.
• Marks obtained in the Skill Test are NOT considered for final selection or merit ranking.

ISRO LPSC 2026 Final Selection & Merit List (Post 813–817)

• The final selection is based purely on the written test marks among candidates who have qualified the Skill Test.
• The selection panel is prepared in the descending order of written test marks from among Skill-Test-qualified candidates.
• Tie-breaker: If two or more candidates score equal marks in the written test, the academic scores of the notified qualification (i.e., diploma/ITI marks) will be used to break the tie.

ISRO LPSC Selection Process 2026 for Post No. 802 (Fireman ‘A’)

The Fireman ‘A’ post follows a more elaborate three-stage selection process due to the physically demanding nature of the role.

Step 1: Preliminary Medical Examination (PME) Certificate

Before appearing for the written test, applicants must submit a PME Certificate along with their application, issued by a Registered Medical Practitioner not below the rank of Assistant Civil Surgeon or equivalent (Allopathy), employed in Government Health Services. This is in the prescribed format (Annexure-A) provided in the official notification.

Step 2: Written Test

Written Test Syllabus for Fireman ‘A’:

• Basic Chemistry with reference to flammable liquids and gases
• LPG properties
• Relation between pressure, volume, and temperature
• Areas of triangle, rectangle, and parallelogram
• Volumes of cylinder, cone, sphere, and cuboid
• Properties of CO₂, O₂, H₂, and inert gases
• Basic concepts in the use of electricity and its hazards
• Properties of water
• General Knowledge

Step 3: Physical Efficiency Test (PET) — Two Stages

• Based on written test marks, candidates meeting the prescribed PME norms are shortlisted for PET in a maximum ratio of 1:50, based on the number of vacancies.
• Candidates with PME certificates not in the prescribed format or incomplete will be disqualified.
• If sufficient candidates are not selected after the test, additional candidates are called in the same ratio.
• Stage-1 PET must be cleared first; only those who qualify Stage-1 proceed to Stage-2 PET.
• PET events are conducted purely on a ‘Go/No-Go’ basis — failing any single event disqualifies the candidate from the remaining events.
• Candidates participate in PET entirely at their own risk; no compensation is payable for any injury, disability, or death arising from participation. A signed declaration (Annexure-B) is mandatory at the time of reporting for PET.
• The list of PET events and qualifying physical fitness standards is detailed in Annexure-C of the official notification.

Step 4: Detailed Medical Examination (DME)

• Candidates who clear both Stage-1 and Stage-2 PET must undergo a Detailed Medical Examination (DME).
• Only one chance is given for DME — candidates who fail to qualify are not considered for empanelment.
• The final selection panel is drawn in the order of written test marks, from among candidates who qualify DME.

Common Ground: ISRO LPSC Exam Centre & Venue for All Posts

Regardless of the post applied for, the Written Test and Skill Test/PET will be conducted only at suitable venues in Thiruvananthapuram, Kerala. Candidates from other states/cities should plan travel accordingly, keeping in mind that:

• No travelling allowance is paid for attending the written test.
• Outstation candidates called for Skill Test/PET are reimbursed second-class railway/bus fare by the shortest route (on production of tickets), provided they are not availing railway concessions for the same purpose.

Document Verification at Skill Test/PET Stage – ISRO LPSC 2026

At the time of the Skill Test (or PET, for Fireman), candidates must produce original documents as proof of the details furnished in their application. Candidates who fail to produce these documents:

• Will not be allowed to attend the Skill Test/PET.
• Will not be paid travelling allowance.
• Will have no claim to participate in further stages of the recruitment process.

Tips to Crack the ISRO LPSC Selection Process 2026

• Master negative marking strategy: With 0.33/0.25 marks deducted per wrong answer, avoid guesswork on questions you’re unsure about — focus on accuracy over attempting every question.
• Balance theory and practical knowledge: Since the syllabus is curriculum-based and tests both breadth and depth, revise your trade/discipline syllabus comprehensively rather than skimming.
• Don’t neglect the Skill Test: Even though it doesn’t count toward the merit list, failing it disqualifies you entirely — so practice your trade’s practical skills seriously.
• Fireman aspirants should start physical training early: PET is conducted on a strict Go/No-Go basis across two stages, so build stamina, strength, and the specific fitness parameters listed in Annexure-C well in advance.
• Keep your PME certificate ready in the correct format: Fireman candidates must ensure their PME certificate is complete and in the prescribed format to avoid disqualification before PET.
• Prepare your original documents in advance: Organise all certificates, mark sheets, and category proofs ahead of the Skill Test/PET to avoid last-minute document verification issues.

Prepare for the ISRO LPSC Written Test with Entri App

Since the final merit list for every post is based purely on written test marks, scoring high in this single stage is critical. The Entri App offers structured preparation material, trade-specific mock tests, previous year question practice, and expert-curated content to help you build accuracy and speed for the ISRO LPSC written test — while also guiding Fireman aspirants on PET preparation. Download the Entri App to start preparing for ISRO LPSC Recruitment 2026 today.