ISRO Technical Questions

Overview

This page contains ISRO technical questions from ISRO written examination papers with detailed solutions.

ISRO technical questions overview

ISRO Written Examination Technical Section:

Questions: 40-50 questions
Time: 60 minutes
Topics: Engineering Fundamentals, Space Technology, Discipline-Specific

Technical problems

Question 1: rocket propulsion

Q1: Calculate the specific impulse of a rocket engine with exhaust velocity 3000 m/s.

Solution:

Specific Impulse (Isp) = Exhaust Velocity / g
Isp = 3000 m/s / 9.8 m/s² ≈ 306 seconds

ISRO 2024 papers

Previous year papers with technical questions

ISRO main page

Complete ISRO placement guide

Similar companies

DRDO · BHEL · NTPC · BEL · BARC · CDAC

Practice ISRO technical questions regularly!

Gate-linked prep notes (2026)

For PSU-style hiring, candidates often combine GATE fundamentals with company aptitude/technical screens:

Revise core branch subjects (not only coding)
Practice numerical aptitude at campus-placement speed
Revisit previous technical MCQs on this site
Keep document readiness (gate scorecard if applicable, marksheets)

Extra technical drill

Q: Why do many PSU drives still test engineering fundamentals heavily?

Roles are often engineering-core, not pure software-product SDE. Expect thermodynamics / power systems / electronics / strength of materials style depth depending on your discipline, plus aptitude.

Q: Should CSE students ignore GATE topics for ISRO?

Not entirely. OS, DBMS, networks, and DSA still appear in technical rounds. Pair them with the aptitude mock on this site.

ISRO Technical Questions

Overview