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ISRO Assistant UDC Mock Test 2026 – Free Online Test Series
Crack the ISRO Centralised Recruitment Board (ICRB) exam with our expertly curated ISRO Assistant UDC Mock Test 2026. We offer a comprehensive mix of free and paid ISRO Assistant Mock Tests to suit every stage of your preparation. Practice full-length sets aligned with the latest 2026 exam pattern (200 questions, 150 minutes). Get detailed solutions, performance analytics, and ISRO Assistant Previous Year Questions to secure your selection for Assistant, UDC, and JPA posts.
📝 12 Mock Tests
🔄 Updated on 22 October 2026
📝 200 Questions (150 Mins)
Official Notification:
Official ISRO Assistant UDC Notification 2026 (ICRB)
Last Updated: 22 October 2026
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📑 Based on: Latest ISRO ICRB 2026 Notice
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🌐 Official Website: https://www.isro.gov.in
Free & Paid ISRO Assistant UDC Practice Sets
CBT Set 2
PRO 🔒CBT Set 3
PRO 🔒CBT Set 4
PRO 🔒CBT Set 5
PRO 🔒CBT Set 6
PRO 🔒CBT Set 7
PRO 🔒CBT Set 8
PRO 🔒CBT Set 9
PRO 🔒Table of Contents
ISRO Assistant UDC Exam Overview 2026
The Indian Space Research Organisation (ISRO) Centralised Recruitment Board (ICRB) conducts the recruitment examination for the posts of Assistants, Junior Personal Assistants (JPA), Upper Division Clerks (UDC), and Stenographers. The recruitment notification ISRO:ICRB:01(A-JPA):2026 was released on 27-07-2026 for vacancies in Pay Level 4.
Our ISRO Assistant UDC Test Series is strictly designed based on the latest 2026 exam pattern. By practicing these sets, you develop the speed and accuracy required to clear the exam.
Note on Content Freshness: The exam details, syllabus, and dates below are updated as per the official ISRO notification. We update this section immediately if ISRO revises vacancies or eligibility criteria.
| Particulars | Details |
|---|---|
| Exam Name | ISRO Assistant, UDC, JPA & Stenographer Exam 2026 |
| Conducting Body | ISRO Centralised Recruitment Board (ICRB) |
| Post Name | Assistant, Upper Division Clerk (UDC), JPA, Stenographer |
| Application Dates | 27-07-2026 to 16-08-2026 |
| Selection Stages | Written Test (CBT) → Skill Test → Document Verification |
| Mode of Exam | Computer Based Examination (CBT) |
| Negative Marking | 0.25 marks for each wrong answer. |
ISRO Assistant UDC vs Other Govt Exams
Confused about which exam to target? Here is a quick comparison to help you understand the basic requirements, salary prospects, and difficulty levels of major examinations.
| Exam | Qualification | Approximate Salary | Difficulty |
|---|---|---|---|
| SSC MTS | 10th Pass | ₹ 24k – 32k | Easy |
| SSC CHSL | 12th Pass | ₹ 28k – 44k | Moderate |
| ISRO Assistant UDC | Graduate (60%) | ₹ 40k – 45k | Moderate |
| SSC CGL | Graduate | ₹ 45k – 80k+ | High |
ISRO Assistant UDC Exam Pattern 2026
Understanding the ISRO Assistant Exam Pattern is crucial. The written test consists of a single objective paper with 200 questions to be solved in 150 minutes.
Written Test Pattern (Assistant / UDC)
| Part | Subject | No. of Questions | Marks | Duration |
|---|---|---|---|---|
| A | General English | 50 | 50 | 150 Minutes |
| B | Quantitative Aptitude | 50 | 50 | |
| C | General Intelligence & Reasoning ability | 50 | 50 | |
| D | General Knowledge | 50 | 50 | |
| Total | — | 200 | ||
Note: Each correct answer carries 1 mark, and 0.25 marks are deducted for each wrong answer. For JPA/Stenographers, Part A has 100 questions, Part B has 50, and Part C has 50 questions.
ISRO Assistant UDC Syllabus 2026
The ISRO Assistant UDC Syllabus covers four main sections.
1. General English
Questions test the candidate’s understanding & knowledge of the language, ability to write correctly, precisely & effectively, correct use of words, idioms & phrases, etc.
2. Quantitative Aptitude
Topics include Number System, Percentages, Profit & Loss, Discount, Ratio & Proportion, Mixer & Allegation, Averages, Simple & Compound interest, Time & distance, Time & Work, Pipe & Cistern, Boat & Stream, Partnership, Surds & Indices, LCM & HCF, Simplification, Geometry, Mensuration, Trigonometry, Algebra, Statistics & data interpretation.
3. General Intelligence & Reasoning ability
Verbal & non-verbal type questions on Missing Number, Repeated Series, Analogy, Venn diagram, Logical arrangement of Words, Coding & decoding, Sitting arrangement, Ranking arrangement, Dice, Cube & Cuboid, Calendar, Number Series, Coded equation, Clock, Directions, Counting figures, Problems based on Alphabets, Sequence, Mirror and Water Image.
4. General Knowledge
Questions to test the candidates’ awareness of the environment around him and its applications to society, current affairs of National & International importance, History, Culture, Geography, Science, Polity, Economy.
ISRO Assistant UDC Skill Test
Candidates who qualify the written test are called for a Skill Test, which is qualifying in nature. The skill test is a Computer Literacy Test.
Computer Literacy Test Details: The test covers MS Word (35 marks), MS Excel (35 marks), and MS Power Point (30 marks). Duration is 75 minutes. Candidates must secure 60% (UR) or 50% (Reserved) to qualify.
Stenography Test (For JPA/Steno): Shorthand test for 300 words @ 60 wpm (5 minutes). Transcription on Computer (30 minutes). Error limits: 10% (UR) and 12% (Reserved).
Eligibility Criteria
Educational Qualification
- Graduation with Minimum of 60% marks or CGPA of 6.32 on a 10-point scale from a recognized University.
- Proficiency in the use of Computers.
- For JPA/Steno: 60 wpm in English Stenography + Graduation/Diploma + 1-year experience.
Age Limit (As on 16.08.2026)
- Generally, the age limit is 28 years (31 years for OBC, 33 years for SC/ST, wherever posts are reserved).
Age relaxations are applicable for Ex-Servicemen, PwBD candidates, meritorious Sportspersons, Widows, and Divorced women as per Government of India norms.
ISRO Assistant UDC Salary & Pay Scale
Selected candidates will receive a lucrative salary under Pay Level 4 of the 7th CPC. The approximate in-hand salary varies based on the classification of the city (X, Y, or Z) where the candidate is posted.
| Post | Pay Level | Basic Pay | City Type | Approx. In-Hand Salary |
|---|---|---|---|---|
| Assistant / UDC | Level-4 | ₹ 25,500 | X Cities | ₹ 42,000 – ₹ 45,000 |
| Y Cities | ₹ 39,000 – ₹ 42,000 | |||
| Z Cities | ₹ 36,000 – ₹ 39,000 |
In addition to Basic Pay, Dearness Allowance (DA), House Rent Allowance (HRA), and Transport Allowance are payable. Employees are also governed by the New Pension Scheme (NPS).
Selection Process 2026
- Stage 1: Written Test (CBT) - Objective type MCQs (200 Questions, 150 Mins). Shortlisting for Skill Test is done in the ratio of 1:5 (maximum).
- Stage 2: Skill Test - Computer Literacy Test (Assistant/UDC) or Stenography Test (JPA/Steno). Qualifying in nature.
- Stage 3: Document Verification (DV) - Final selection is based on marks scored in the written test among those who qualify the Skill Test.
How to Crack ISRO Assistant UDC 2026?
- Written Test Strategy: Since there is a 0.25 negative marking, accuracy is crucial. Attempt only the questions you are sure about.
- Subject Focus: Quantitative Aptitude and Reasoning carry 100 marks combined. Master these high-scoring areas.
- Mock Tests: Attempt 2–3 full-length mock tests every week and analyze every mistake. Daily practice should focus on sectional tests and previous year questions.
- Skill Test Prep: Do not ignore the Computer Literacy Test. Practice MS Office daily to achieve the required 60% speed and accuracy.
Frequently Asked Questions (FAQs)
What is the ISRO Assistant UDC Mock Test 2026?
The ISRO Assistant UDC Mock Test 2026 is an online test series designed to help aspirants prepare for the ISRO Centralised Recruitment Board (ICRB) exam. It includes free and paid full-length practice sets based on the latest exam pattern.
How to prepare for ISRO Assistant UDC 2026?
To prepare for ISRO Assistant UDC, clear your basic graduation-level concepts, practice Quantitative Aptitude and Reasoning daily, and attempt regular ISRO Assistant Mock Tests. Practice Previous Year Questions to understand the exam pattern and improve time management.
Are the ISRO Assistant Mock Tests free or paid?
MockSeries offers a mix of both free and paid ISRO Assistant Online Mock Tests. Aspirants can attempt free practice sets to evaluate their preparation, and unlock premium test series for advanced, full-length practice with detailed analytics.
How many questions are included in the ISRO Assistant UDC Mock Test?
The ISRO Assistant UDC Mock Test typically contains 200 objective questions (50 General English + 50 Quantitative Aptitude + 50 General Intelligence & Reasoning + 50 General Knowledge) carrying 200 marks, to be solved in 150 minutes.
Does this test series include ISRO Assistant Previous Year Questions (PYQs)?
Yes, our ISRO Assistant Test Series includes Previous Year Questions (PYQs) to help you understand the exact difficulty level, important topics, and the trend of the ISRO UDC Exam.
Is there negative marking in ISRO Assistant UDC?
Yes, there is a negative marking of 0.25 marks for every incorrect answer in the ISRO Assistant UDC written test.
What is the salary of an ISRO Assistant UDC?
ISRO Assistant UDC is placed at Pay Level 4 of the 7th CPC with a basic pay of Rs. 25,500. The approximate in-hand salary ranges from Rs. 40,000 to Rs. 45,000 per month depending on the city classification and allowances.
What is the qualification for ISRO Assistant UDC 2026?
Candidates must have a Graduation degree with a minimum of 60% marks or CGPA of 6.32 on a 10-point scale from a recognized University, along with proficiency in the use of computers.
What is the age limit for ISRO Assistant UDC 2026?
The age limit is 28 years as on 16.08.2026 (31 years for OBC and 33 years for SC/ST candidates, wherever posts are reserved). Age relaxations apply for Ex-Servicemen and PwBD candidates as per Government of India norms.
Where can I attempt the Best ISRO Assistant UDC Mock Test?
You can attempt the best ISRO Assistant UDC Mock Tests directly on this page at MockSeries.in. We offer both free and paid test series designed based on the latest 2026 ICRB pattern.