ISRO ISTRAC 90 Days Study Plan 2026: Day-wise & Week-wise Study Schedule for All Posts

Preparing for the ISRO ISTRAC Recruitment 2026 requires a well-planned strategy, especially with the Computer-Based Test (CBT) featuring 80 multiple-choice questions (60 for Cook-A), a 90-minute duration, and 0.33 negative marking for every incorrect answer. A structured 90-day study plan can help candidates cover the complete syllabus, strengthen core concepts, practice mock tests, and improve time management. In this article, you’ll find a comprehensive 90-day ISRO ISTRAC study plan 2026 to maximize your chances of qualifying for the written test and skill test.

ISRO 2026 Technical Assistant Previous Year Question Paper PDF Download

ISRO 2026 Technician-B Previous Year Question Papers PDF Download

ISRO ISTRAC Recruitment 2026 Overview – Details Here!

ISRO ISTRAC Recruitment 2026 – Important Dates

ISRO ISTRAC 90-Day Study Plan for Technician-B, Technical Assistant & Other Posts

With the application window open till 20.07.2026, and the written test/CBT typically scheduled a few months after the application closes, candidates who start preparing now with a structured 90-day plan give themselves the best chance to cover the full curriculum-based syllabus, revise thoroughly, and practice enough previous year papers and mock tests before the actual exam. This plan is divided into three phases: Foundation Building (Day 1-30), Advanced Practice and Skill Test Prep (Day 31-60), and Revision, Mock Tests and Final Sprint (Day 61-90).

Phase 1: Foundation Building (Day 1 to Day 30)

The first month should be dedicated to building strong conceptual clarity in your core subject, since ISRO ISTRAC’s written test is curriculum-based and directly tied to your trade/diploma/degree qualification.

Week 1 (Day 1-7): Syllabus Mapping and Study Material Collection

• Read the official ISTRAC:02:2026 notification thoroughly and note your exact post code and qualification-based subject.
• Collect your NCVT trade textbook (for Technician-B/Draughtsman-B), diploma textbooks (for Technical Assistant), or degree textbooks (for Scientific Assistant/Library Assistant-A).
• Create a subject-wise topic list and a daily study timetable of 5-6 hours, balancing technical subject study with general awareness and aptitude.

Week 2-3 (Day 8-21): Core Subject

• Technician-B (Electronics Mechanic): Cover basic electronics, semiconductor devices, analog and digital circuits, and electronic measuring instruments.
• Technician-B (Carpenter): Cover wood properties, joinery techniques, and carpentry tools.
• Draughtsman-B (Civil/Mechanical): Cover building/machine drawing fundamentals, projections, and drafting basics.
• Technical Assistant (Electronics): Cover electrical fundamentals, analog/digital electronics, and communication engineering basics.
• Technical Assistant (Mechanical): Cover engineering mechanics, thermodynamics, and manufacturing processes.
• Scientific Assistant (Computer Science): Cover programming fundamentals, data structures, and DBMS.
• Scientific Assistant (Mathematics): Cover algebra, calculus, and differential equations.
• Library Assistant-A: Cover cataloguing, classification systems, and library automation basics.
• Cook-A: Cover food preparation techniques, hygiene practices, and kitchen safety.

Week 4 (Day 22-30): General Awareness and Basic Aptitude Foundation

• Dedicate this week to building a base in general knowledge (current affairs, science and technology, Indian space program basics) and basic arithmetic/reasoning, since these topics often carry supplementary weightage across ISRO exams.
• Take your first diagnostic mock test at the end of Day 30 to assess your starting point.

Phase 2: Advanced Practice and Skill Test Preparation (Day 31 to Day 60)

The second month should focus on deepening technical knowledge, starting previous year paper practice, and beginning preparation for the Skill Test relevant to your post.

Week 5-6 (Day 31-42): Previous Year Paper Practice Begins

• Start solving previous year question papers relevant to your trade/stream from ISRO’s official old question paper archive and other verified sources.
• Solve at least 3-4 previous papers per week under timed conditions (1.5 hours), and analyze mistakes immediately after each attempt.

Continue revising weak topics identified from paper analysis alongside your core textbook study.

Week 7-8 (Day 43-56): Skill Test Preparation Alongside Written Test Revision

• For Technician-B/Draughtsman-B: Begin hands-on trade practice (workshop tools, drawing instruments) relevant to your trade’s Skill Test, since it is conducted on a go-no-go basis.
• For Technical Assistant/Scientific Assistant: Start practicing computer-based skill test components relevant to your stream (basic computer literacy, discipline-specific practical tasks).
• For Library Assistant-A: Focus on computer literacy practice, since the Skill Test for this post specifically tests this component.
• For Cook-A: Begin practical cooking and kitchen safety practice, since the Skill Test requires securing a minimum of 60/100 marks with no relaxation for any category.

Continue solving 2-3 previous papers or full-length mock tests per week, maintaining timed practice discipline.

Phase 3: Revision, Mock Tests and Final Sprint (Day 61 to Day 90)

The final month should be entirely dedicated to intensive revision, full-length mock tests, and refining your exam-day strategy.

Week 9-10 (Day 61-74): Full-Length Mock Test Cycle

• Take one full-length mock test (80 MCQs/60 MCQs in 1.5 hours) every alternate day, simulating exact exam conditions including negative marking.
• After each mock test, spend equal time reviewing incorrect answers and understanding the underlying concept, not just memorizing the correct option.
• Track your score trend week over week to measure improvement and identify persistently weak areas.

Week 11 (Day 75-81): Targeted Weak Area Revision

• Dedicate this week exclusively to your weakest 3-4 topics identified from mock test analysis.
• Revisit NCVT/diploma/degree textbook chapters for these topics and solve topic-specific practice questions.
• Continue light daily revision of strong topics to maintain retention.

Week 12 (Day 82-90): Final Revision and Preparation

• Days 82-86: Do a complete but fast revision of your entire syllabus using short notes/flashcards prepared during earlier phases.
• Days 87-88: Take 1-2 final full-length mock tests to build confidence and fine-tune time management (aim to leave 5-10 minutes for review at the end).
• Day 89: Light revision only, focus on formulas, key definitions, and frequently confused concepts, avoid starting new topics.
• Day 90: Rest, organize your admit card and required documents, and mentally prepare for exam day. Avoid heavy studying on this day to prevent last-minute anxiety.

General Preparation Tips for All ISRO ISTRAC 2026 Posts

• Since negative marking of 0.33 applies for every wrong answer, practice disciplined attempt strategy throughout your mock tests, only attempt questions you are reasonably confident about.
• Balance technical subject preparation with general awareness and basic aptitude daily, rather than only in the final phase.
• For trade/skill-based posts (Technician-B, Draughtsman-B, Cook-A), do not neglect hands-on practical practice alongside theory, since the Skill Test is qualifying in nature and often go-no-go based.
• Read the official ISTRAC:02:2026 notification periodically for any corrigendum or exam date updates, since ISRO does not notify changes through newspapers.
• Maintain a error log throughout your 90 days, noting every mistake and its correct concept, this becomes your most valuable revision tool in the final two weeks.