ISRO Assistant Preparation Guide

ISRO Assistant Preparation Guide 2026

Overview

ISRO Assistant practice tests covering English, GK, Quantitative Aptitude, Reasoning, and subject tests, including paired practice for assistant and JPA-style roles. It is aimed at ISRO aspirants, with a medium difficulty level.

Exam Pattern

Total: 200 questions in 150 minutes.

Detailed Syllabus

• General English
• General Knowledge
• Quantitative Aptitude
• General Intelligence & Reasoning
• Subject Tests
• ISRO Assistant/UDC
• ISRO Junior Personal Assistant/Stenographer

Marking Scheme

• Correct answer: +1 marks
• Wrong answer: 0 marks
• Unanswered: 0 marks

Preparation Strategy

1. Map Every Section to Time: ISRO Assistant splits 200 questions across 1 section in 150 minutes — decide a per-section time budget before test day so no single section eats your buffer.
2. Prioritize the Syllabus by Weight: Focus first on General English and General Knowledge, then move to Quantitative Aptitude, General Intelligence & Reasoning, Subject Tests, ISRO Assistant/UDC, ISRO Junior Personal Assistant/Stenographer — these are the subjects tested in the actual paper structure.
3. Respect the Negative Marking: A wrong answer costs 0 mark(s), so only attempt a question when you can eliminate at least two options — guessing blind against this penalty is a net loss over a full paper.
4. Simulate the Real Timer: Take full-length 150-minute mock tests on YourMockTest under exam conditions before attempting the real ISRO Assistant — pacing under pressure is a separate skill from knowing the syllabus.
5. Review Every Mistake: After each mock, spend more time reviewing wrong answers than attempting new questions — a repeated mistake in practice is a guaranteed mistake in the real exam.