MCQ, MSQ, and NAT split per topic, computed from all 195 GATE CH questions in our 2024–2026 archive.
| Topic | MCQ | MSQ | NAT | Total | % NAT |
|---|---|---|---|---|---|
| Reaction Engineering | 13 | 1 | 12 | 26 | 46% |
| Mathematics | 15 | 2 | 8 | 25 | 32% |
| Thermodynamics | 6 | 1 | 11 | 18 | 61% |
| Mass Transfer | 11 | 0 | 5 | 16 | 31% |
| Fluid Mechanics | 6 | 2 | 8 | 16 | 50% |
| Heat Transfer | 7 | 2 | 6 | 15 | 40% |
| Process Control | 7 | 1 | 5 | 13 | 38% |
| Mechanical Operations | 5 | 0 | 6 | 11 | 55% |
| Chemical Technology | 6 | 3 | 0 | 9 | 0% |
| Plant Economics | 3 | 1 | 2 | 6 | 33% |
| Distillation | 3 | 0 | 2 | 5 | 40% |
| Numerical Methods | 0 | 0 | 3 | 3 | 100% |
| Instrumentation | 2 | 0 | 0 | 2 | 0% |
| Kinetics | 1 | 0 | 0 | 1 | 0% |
This dataset doesn't track per-question marks or site-side attempt/skip data, so this table uses the closest real, non-fabricated difficulty signal available: question type. Numerical Answer Type (NAT) questions have no options to eliminate or guess from, making them the hardest format to game, Numerical Methods has the highest NAT share at 100% of its questions.
Multiple Select (MSQ) questions require identifying every correct option with no partial credit for a partial match, which also raises effective difficulty relative to single-answer MCQs even though both offer options to reason from.
See the companion topic weightage table for how often each topic appears, or browse individual questions in the PYQ archive.
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