ISRO Scientist/Engineer (SC) Mock Tests, Syllabus & Complete Exam Guide

The ISRO Scientist/Engineer 'SC' recruitment is the Indian Space Research Organisation's entry-level exam for hiring engineering graduates as Scientists/Engineers in the 'SC' grade. It brings BE/BTech graduates from disciplines such as Electronics, Mechanical and Computer Science into India's space programme, placing successful candidates at ISRO centres that build launch vehicles, satellites and ground systems. Because it offers a prestigious research career at Pay Level 10, it draws a very large number of applicants each cycle.

The selection has two parts: an objective written test in the candidate's engineering discipline, and an interview for those who clear the written stage. The written test focuses on core engineering fundamentals along with engineering mathematics, aptitude and general science and technology; final merit is decided by the interview among shortlisted candidates. Because the written paper is competitive and (in the actual exam) carries negative marking, accuracy on discipline fundamentals is what gets you shortlisted.

The written test rewards strong command of undergraduate engineering fundamentals in your discipline — thermodynamics, circuits and Ohm's law, strength of materials, digital logic and control systems basics — so revise core theory until standard problems are quick and automatic. Engineering Mathematics (calculus, matrices, differential equations, probability and Laplace transforms) is high-return and stable across disciplines, so keep it sharp.

Aptitude and reasoning reward speed on percentages, ratios, time-speed-distance and logical puzzles, while General Science & Technology rewards awareness of India's space programme — launch vehicles such as PSLV and GSLV, cryogenic engines, satellites and orbits, and missions like Chandrayaan, Mangalyaan and Aditya-L1 — alongside general physics and chemistry. Because the real exam has negative marking, attempt with discipline, and take full-length timed mocks to build the pacing the paper demands before you sit the interview stage.