Every solved question below is worked through in full, not just the final answer, and checked against the official GATE answer key where one has been released.
GATE Chemical Engineering previous year questions (PYQs) are the single highest-leverage practice material available, they show you exactly which formulas, in exactly what style of question, the exam actually tests. Reading a textbook chapter tells you how a concept works; solving the real question that appeared on a real paper tells you how GATE expects you to apply it under time pressure.
This page collects ChemeGate's solved GATE ChemE PYQs, organized by year and topic. Each one links to a full worked solution, either an interactive calculator that shows every intermediate step, or a question inside the full year-wise practice test with an explanation attached. Where the question maps directly onto one of ChemeGate's calculators, you can also change the input values and re-solve variations of the same question to stress-test your understanding, not just memorize one answer.
For a broader run at the full papers, GATE 2024 (IISc Bengaluru), GATE 2025 (IIT Roorkee), and GATE 2026 (IIT Guwahati), use the GATE practice tests by year, which run all questions from a given year with a real 180-minute timer and instant, explained results.
Six solved questions spanning Mass Transfer, Heat Transfer, Fluid Mechanics, and Thermodynamics.
The full question sets for 2024 and 2026 are available as timed practice tests, with instant step-by-step explanations for every question, including MCQ, MSQ, and numerical-answer-type (NAT) formats, matching the real GATE exam structure.
Start a Practice Test →If you'd rather work formula-first, ChemeGate's three GATE Chemical Engineering calculators, Antoine equation, LMTD, and Reynolds number, each have a solved GATE question built directly into the page, next to the interactive tool you can use to check your own work.