ISRO Assistant, UDC, and JPA Syllabus 2026, Check the Latest Exam Pattern

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The ISRO Syllabus 2026 has been released for the Assistant, Upper Division Clerk (UDC), and Junior Personal Assistant (JPA) posts. Candidates preparing for the recruitment examination should understand the latest syllabus and exam pattern to plan their preparation effectively.

In this article, we provide the complete details on the ISRO Syllabus 2026, including detailed exam pattern, subject-wise topics, syllabus PDFs, and much more.

ISRO Assistant, UDC, and JPA Syllabus 2026

As per the ISRO Exam 2026, the written examination is objective in nature and assesses candidates on subjects such as English, Quantitative Aptitude, General Intelligence & Reasoning, and General Knowledge. However, the weightage of these sections differs for the Assistant/UDC and JPA posts.

Candidates can download the official ISRO Syllabus PDF 2026 along with the detailed exam pattern from the recruitment notification released by ISRO. The PDF contains the complete subject-wise syllabus for Assistant, UDC, and JPA posts.

ISRO Syllabus: Overview

Particulars	Details
Organization	Indian Space Research Organisation (ISRO)
Posts	Assistant, Upper Division Clerk (UDC), Junior Personal Assistant (JPA)
Exam Mode	Online (Computer-Based Test)
Question Type	Objective (Multiple Choice Questions)
Negative Marking	Yes (-0.25 mark for each wrong answer)
Total Duration	120 Minutes
Official Website	www.isro.gov.in

ISRO Assistant/UDC Exam Pattern 2026

The written examination for Assistant and Upper Division Clerk (UDC) consists of 200 objective-type questions carrying 200 marks. Each correct answer carries 1 mark, while 0.25 marks are deducted for every incorrect answer. The total duration of the examination is 120 minutes.

Part	Subject	Questions	Marks
A	General English	50	50
B	Quantitative Aptitude	50	50
C	General Intelligence & Reasoning Ability	50	50
D	General Knowledge	50	50
Total		200	200

ISRO JPA Exam Pattern 2026

The Junior Personal Assistant (JPA) examination also carries 200 marks, but the distribution of questions is different. English Language & Comprehension has the highest weightage with 100 questions, making it the most important section for JPA aspirants. The examination follows the same objective format with 1 mark for each correct answer and 0.25 negative marking for incorrect responses.

Part	Subject	Questions	Marks
A	English Language & Comprehension	100	100
B	General Intelligence & Reasoning Ability	50	50
C	Quantitative Aptitude & General Knowledge	50	50
Total		200	200

ISRO Assistant/UDC Syllabus

The syllabus for Assistant and UDC posts covers four major sections designed to assess language proficiency, numerical ability, reasoning skills, and general awareness.

General English

Questions are designed to evaluate candidates’ command of the English language, including:

Grammar
Vocabulary
Correct usage of words
Idioms and Phrases
Sentence formation
Reading and language understanding
Writing accuracy and precision

Quantitative Aptitude

Candidates should prepare the following topics:

Number System
Simplification
LCM & HCF
Percentages
Profit and Loss
Discount
Ratio and Proportion
Average
Simple and Compound Interest
Time and Work
Time, Speed and Distance
Boats and Streams
Pipes and Cisterns
Partnership
Surds and Indices
Algebra
Coordinate Geometry
Polynomials
Sequence and Series
Geometry
Mensuration
Trigonometry
Statistics
Data Interpretation

General Intelligence & Reasoning Ability

The General Intelligence & Reasoning section tests the logical and analytical abilities of candidates. The important topics included in the syllabus are:

Missing Number
Number Series
Repeated Series
Analogy
Coding and Decoding
Venn Diagram
Logical Arrangement of Words
Sitting Arrangement
Ranking Arrangement
Dice
Cube and Cuboid
Calendar
Clock
Directions
Counting Figures
Problems Based on Alphabets
Sequence
Mirror Image
Water Image
Coded Equations

General Knowledge

This section evaluates candidates’ awareness of current events and general subjects. Candidates should prepare:

Current Affairs (National and International)
Indian History
Geography
Indian Polity
Indian Economy
Science and Technology
Culture
Environment
Important Government Schemes
Static General Knowledge

ISRO JPA Syllabus 2026

The Junior Personal Assistant (JPA) syllabus gives greater emphasis to English Language & Comprehension, which accounts for half of the total questions. Candidates should focus on improving grammar, vocabulary, comprehension, and writing skills along with aptitude and reasoning.

English Language & Comprehension

Candidates should prepare the following topics:

Spot the Error
Fill in the Blanks
Synonyms
Antonyms
Detecting Misspelt Words
Idioms and Phrases
One Word Substitution
Sentence Improvement
Active and Passive Voice
Direct and Indirect Speech
Cloze Test
Reading Comprehension
Vocabulary
Grammar

General Intelligence & Reasoning Ability

The Reasoning syllabus for JPA is similar to the Assistant/UDC examination and includes:

Missing Number
Number Series
Analogy
Coding-Decoding
Venn Diagram
Sitting Arrangement
Ranking Arrangement
Dice
Cube and Cuboid
Calendar
Clock
Directions
Mirror Image
Water Image
Alphabet Problems
Counting Figures
Logical Arrangement
Coded Equations
Sequence-based Questions

Quantitative Aptitude

Important topics include:

Number System
Percentages
Profit and Loss
Discount
Ratio and Proportion
Average
Simple Interest
Compound Interest
Time and Work
Time, Speed and Distance
Boats and Streams
Pipes and Cisterns
Partnership
Simplification
LCM & HCF
Surds and Indices
Algebra
Coordinate Geometry
Geometry
Mensuration
Trigonometry
Statistics
Data Interpretation

General Knowledge

Candidates should prepare the following topics:

National Current Affairs
International Current Affairs
History
Geography
Indian Constitution
Indian Economy
General Science
Culture
Environment
Static GK

ISRO Syllabus 2026 for Assistant/UDC PDF Download Link

ISRO Syllabus 2026 for JPA PDF Download Link

Preparation Tips for ISRO Assistant, UDC & JPA Exam 2026

Preparing according to the latest syllabus can significantly improve your chances of qualifying the examination. Here are a few useful preparation tips:

Carefully understand the latest syllabus and exam pattern before starting your preparation.
Prepare a daily study schedule covering all sections.
Give extra attention to English if you are preparing for the JPA examination.
Practice Quantitative Aptitude and Reasoning questions daily.
Read newspapers and monthly current affairs magazines for the General Knowledge section.
Attempt mock tests regularly to improve speed and accuracy.
Revise formulas, grammar rules, and important current affairs frequently.
Practice previous years’ question papers to understand the difficulty level and question trends.

FAQs

What subjects are included in the ISRO Assistant and UDC Syllabus 2026?

The ISRO Assistant and UDC syllabus includes General English, Quantitative Aptitude, General Intelligence & Reasoning Ability, and General Knowledge.

What is the exam pattern for the ISRO Assistant and UDC Exam 2026?

The exam consists of 200 objective-type questions for 200 marks with a duration of 120 minutes. There is 0.25 negative marking for each incorrect answer.

Is the JPA syllabus different from the Assistant and UDC syllabus?

Yes. The JPA exam gives higher weightage to English Language & Comprehension, with 100 questions, while the remaining questions are from Reasoning, Quantitative Aptitude, and General Knowledge.

Is there negative marking in the ISRO Recruitment Exam 2026?

Yes. 0.25 marks are deducted for every incorrect answer in both the Assistant/UDC and JPA examinations.

How many questions are asked in the ISRO JPA Exam 2026?

The ISRO JPA examination consists of 200 objective-type questions carrying 200 marks, to be completed in 120 minutes.

Where can I download the ISRO Syllabus 2026 PDF?

Candidates can download the official ISRO Syllabus 2026 PDF from the ISRO recruitment notification or the official ISRO website.

Which section carries the highest weightage in the ISRO JPA Exam?

English Language & Comprehension carries the highest weightage with 100 questions in the JPA examination.

What is the best way to prepare for the ISRO Assistant, UDC, and JPA Exam 2026?

Candidates should complete the syllabus, practice previous years' papers, attempt mock tests regularly, revise current affairs, and focus on speed and accuracy to score well in the examination.